What are the 4 things that make plants unique to their algae ancestors?
The four ways by which land plants later evolved and became unique from their algal ancestors are:
Explanation:
The ancestors or close relatives of land plants are the green algae also called the charophytes. Land plants became unique from their algal ancestors due to evolutionary changes required for adaption with the environment.
Alteration in the successive generations of plant species, produces gametes and sporophytes through mitosis and meiosis. Embryonic growth at multicellular level, obtains nutrient from parent cells.Plants produces spores through sporangia and have multicellular gametangiaGrowth of plant occurs through apical meristems by differentiation of tissuesFour things that make plants unique to their algae ancestors are:
1. Plants have connective tissues that helps to transport nutrients and water throughout the plant. While in algae, each cell absorbs its own water. This makes algae non vascular.
2. Plants are multi-cellular that consists of chloroplasts, cellulose walls and also have the ability to make embryos while algae are generally single celled.
3. Algae majorly thrives in water that uses the minerals found in water to produce their own food but some can live on land and even on snow. However, Plants mostly grow on land because they use sunlight and CO2 to keep some of its most important biologic processes going on.
4. The mode of reproduction in plants is more complex compared to that of algae which is primitive.
The law of superposition states that layers of sedimentary rock are
A.
ordered in a repeating pattern, with every third layer being identical.
B.
ordered in a time sequence, with the oldest layers on the bottom and the youngest on top.
C.
ordered according to the age of the volcano that created the layer.
D.
ordered in a random fashion, with the age of the rock varying wildly from one layer to the next.
Sedimentary Rock layers over time and if there is a cliff area where you can see all the layering, there is no rhyme or reason to it, just simply grows with time. B
According to reports by National Public Radio, sales of products labeled Non-GMO have more than doubled over the past two years, jumping from $7 billion to $16 billion. At the same time, organic foods have also been gaining in popularity, though at a much slower rate. What do you know about GMO's? All organic foods contain GMO ingredients, as set forth in USDA guidelines. 85% of the U.S. corn is GMO; modified to be resistant to herbicides. The U.S. does not require that GMO foods be labelled as such. Example of GMO: cross-pollinating plants for a desired trait. Technology now allows us to transfer genes between organisms of different species and even kingdoms. Extensive testing has been conducted on GMO-foods to ensure that there will be no adverse allergic reactions or health risks.
Genetically modified organisms are those organisms in which certain gene is inserted to get the desired beneficial results.
Explanation:
A genetically modified organism is an organism or plant altered for beneficial traits which would not have been possible by the traditional mating process or recombination techniques.
Genetic engineering is the technique involved for the construction of gene of interest and inserting them in the host species for getting expressed.
Many fruitful results have come out like a tomato of long shelf life k/a flavr savr.
Apart from molecular techniques used for cloning, CRISPR is the recent innovation which had made it very simple.
The GMOs can solve the food problem of the world as Single-cell proteins and longer shelved life food.
Disease resistant plants can be formed for better yields.
Nutrition level of food can be increased.
Example of GMO are canola, corn, papaya, soy and many animals are also on the list.
Answer: the first person is correct
Explanation:
In nature, animal populations are dynamic. This means they are changing due to various circumstances. The population of rabbits in certain areas of the world are affected by the population of foxes, for example. Using reasoning, which model shows the relationship between the two populations?
Answer:
The model representing this relationship is : Prey-Predator Relationship.
Explanation:
In a prey-predator relationship, the population size of each, prey and predator is affected by the population of the other.This is distinctly observed when the predator has a preference for a particular prey.In the given example, the rabbits are the prey and the foxes are the predators.Increase in the population of the rabbits will make them easily accessible to the foxes, that on hunt them for their food. On obtaining sufficient food the foxes can reproduce well and will produce more offspring, so the population size of the foxes would also increase.After some time, the continued hunting of the rabbits will cause its death rate to increase more than its birth rate. This will result in the decline in the rabbit population.The reduced rabbit population would reduce the chances of them being accessed and hunted by the foxes. Due to decrease in food availability, the foxes reduce their reproduction rate, as a result the fox population gradually decreases.This is followed by an increase in rabbit population.This cycle continues.Which of the following types of reproduction is evolution observable?
Asexual
Sexual
Detrimental
Analogous
In Sexual reproduction evolution takes place.
Explanation:
In sexual reproduction, the gametes from the two parents fuse to form a zygote and consequently an organism. The gametes from the two parents provide different alleles for a trait. The different genetic variant or alleles found will cause genetic variation.
The offspring can survive and adapt to the new environment. This leads to natural selection and evolution.
In asexual reproduction changes only occur if mutation takes place otherwise the progeny remains genetically identical so less chance of evolution.
Analogous are the organs having similar function but different origin in different organisms.
Detrimental effects are small or negligible effect of mutation on organism due to the exposure of chemicals or rays.
Only those mutations are heritable which occur in germ cells, mutations of somatic cell do no pass to other generation. Detrimental effect is mainly seen in somatic cells.
Name
Class
Date
Biology/Life Sciences Standards: Genetics
Amino acids
IRNA
Growing protein
III - Anticodon
UGU
GU
mRNA
CCA (ACA) CÁC CUU CCG GGA CCU CÁC CCC CUA AGU
Codon
Fiqure 2-10 Translation A protein molecule is synthesized on a ribosome
when tRNA translates the genetic information in mRNA.
Review Questions
30 Genetic information is contained
in code words. Each code word con-
sists of three
A amino acids.
B nitrogen bases.
C codons.
D anticodons.
Which statement is true about
TRNA?
A It transcribes genetic informa-
tion in DNA.
B It translates genetic information
in mRNA
C It transfers amino acids to the
nucleus.
D It transfers mRNA to a
ribosome.
311
Where is the genetic information in
mRNA translated into a sequence
of amino acids?
A in the nucleus
B inside a DNA molecule
con a ribosome
D in a complementary base
Answer:
30.
B. nitrogen basesB. It translates genetic information in mRNA31.
C. On a ribosomeExplanation:
Translation:
Translation is the final step in the central dogma of molecular biology that involves the decoding and translation of the codons on mRNA to amino acid sequence.The genetic code is a scheme of 64 triplet nitrogeneous base codons that code for 20 amino acids.A tRNA molecule reads this codon sequence with the help of complementary anticodons and helps transport an amino acid to the ribosome for addition to the growing polypeptide chain.Protein synthesis occurs in the rough endoplasmic reticulum (RER) in the cytoplasm.Drag each tile to the correct location on the chart. Each tile can be used more than once.
Categorize each mutation by its most likely effect on the organism.
harmful
beneficial
neutral
Genetic Mutation
Effect
A mutation in the HBB gene, which codes for
hemoglobin, produces red blood cells that
are rigid and sickle-shaped
A mutation in the EYCL3 gene, which helps
regulate eye color, produces two
different colored eyes.
A mutation in the CFTR gene, which codes
for a cell transport protein, causes a buildup
of a thick mucus that covers the organs.
A mutation in the LRP5 gene, which codes
for a cell membrane protein, increases
bone density
beneficial
Reset
Next
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Answer:
Mutations are errors in genetic information and code that cause physical and functional alterations in living organisms. Some of them may be beneficial, harmful, or not produce significant alterations (neutral).
Explanation:
When categorizing each mutation as beneficial, harmful, or neutral, it's observed that:
A mutation in the HBB gene, which codes for hemoglobin, produces red blood cells that are rigid and sickle-shaped and is harmful.
Sickle cell anemia is caused by the HBB gene mutation, producing crescent-shaped cells, or "YES", which are not functional and very short-lived, causing hemolytic anemia. Deformity in red blood cells can cause blockage of small-caliber arteries, causing other symptoms other symptoms related to the disease.
A mutation in the EYCL3 gene, which helps regulate eye color, produces two different colored eyes, is neutral.
Under normal conditions, EYCL gene determine the color of the eyes. A mutation of this gene can cause the same individual to have a green and blue eye, which is not a serious health problem, but rather aesthetic.
A mutation in the CFTR gene, which codes for a cell transport protein, causes a buildup of a thick mucus that covers the organs, which represents a harmful mutation.
Cystic fibrosis, a disease caused by a mutation in the CFRT gene, produces the excessive thick mucous secretion that lines up the lungs and other organs - liver, pancreas, intestine - that characterizes this condition.This causes a functional alteration of the affected organ. It is also known as mucoviscidosis.
A mutation in the LRP5 gene, which codes for a cell membrane protein, increases bone density, which can be harmful, when it produces symptoms or beneficial.
Increased bone density is called osteopetrosis, and depends on the LRP5 -Low density lipoprotein receptor-related protein 5- gene mutation, that can cause bone pain in childhood and adolescence in just over half of patients, but represents an increase in bone resistance and reduces the risk of fractures.
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According to the scientific process how should a scientific question best be answered
Answer:
Scientific questions must be testable, which means that they ask about specific objects, organisms, or events in the world, and can be answered by experiment through measuring and analyzing data.
Answer: The correct answer would be conducting experiments
In your opinion, what are the main factors that cause pollution?
Answer:
I my opinion i think that the main causes of pollution is planes and cars as they use fuel to run. Deforestation is one major factor as there less trees to absorb the CO 2 (Carbon Dioxide). burining fo fossil fuels can also lead to many polluted areas
your welcome
plz mark brainliest
Which of the following choices is not evidence supporting the theory of plate tectonics?
fossil assemblages is NOT evidence supporting the theory of plate tectonics.
Explanation:
Supporting evidence of tectonic plate movements include;
ancient cave drawing found in Francethe jigsaw puzzle-like fit of the continentstraces of glaciation found in Africa and South AmericaRather than fossil assemblage, similar fossils of a species found in different continents straddling a vast ocean are evidence of tectonic plate movement.
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Answer:
its B
Explanation:
trust
what method can scientists use to determine when the fossil above appeared on earth?
Answer:
There are two ways
1) By the depth at which the fossil was found(i.e. If it was found near the surface of Earth, then its a fossil which was just recently decomposed, but if it was deep inside then it's old.
2) By method of Carbon Dating
Answer:
-relative age dating
Explanation:
t meant that scientists could suddenly establish the actual ages of all their rocks and fossils! The method of using radioactive decay to determine the age of rocks is called radiometric dating.
Hope this help
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A Mother who is homozygous for Huntington's disease and a father who is homozygous normal want to have a baby. What genotypes and phenotypes are possible for their child? Show punnet square
A dominant allele codes for Huntington's disease, while the recessive allele codes for normal phenotype. The genotype of the progeny will be heter0zyg0us Hh, and they will express the disease.
--------------------------------------------
Huntington's disease is an autosomal and dominant affection, caused by a mutation in the gene that codifies for the Huntingtin protein (Htt).
Let us say that
H is the dominant allele that codes for the diseaseh is the recessive allele that codes for normal phenotype
Cross: mother h0m0zyg0us dominant with father h0m0zyg0us recessive
Parentals) HH x hh
Gametes) H H h h
Punnett square) H H
h Hh Hh
h Hh Hh
F1) 100% of the progeny is expected to be heter0zyg0us, Hh, and express the disease.
The only possible genotype for children is to be heter0zyg0us for the trait and express the disease.
----------------------------
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Huntington's disease is inherited in an autosomal dominant manner. The offspring of a mother with homozygous Huntington's and a father who is homozygous normal will all inherit and develop Huntington's disease due to the dominant inheritance pattern.
Explanation:The question is about Huntington's disease, which is an autosomal dominantly inherited disease. This means that if one parent possesses a mutated gene for Huntington's (let's denote it as H for Huntington's and n for normal), they can pass it on to their offspring and the offspring will develop the disease. As the mother is homozygous for Huntington's disease(HH), and the father is homozygous normal(nn), we can use a Punnett square to predict the genotypes and phenotypes of the offspring.
The Punnett square will look as follows:
Mother's genes: H H Father's genes: n n
Resulting offspring possibilities:
Hn (Huntington's disease) Hn (Huntington's disease)
As you can see, all possible combinations result in the child being heterozygous but still having Huntington's disease because of the dominant inheritance pattern of this disease. Therefore, all the offspring will inherit and develop Huntington's disease.
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Which statement BEST describes a scientific theory?
OA) No scientists believe it is correct.
OB) A few scientists believe it is correct.
OC) Many scientists believe it is correct.
OD) All scientists believe it is correct.
I think C. Many scientists believe it is correct. because a theory can not be proven therefore some we'll educated scientists could still reasonably believe the theory to be false, even when I hasn't been proven incorrect.
An example of a land feature formed by river erosion is
a.
alluvial fans
c.
soil
b.
deltas
d.
oxbow lakes
Please select the best answer from the choices provided
A
B
C
D
Answer:
An example of a land feature formed by river erosion is alluvial fans
Explanation:
Alluvial fans entails when water caused an erosion on land and makes it to form a likely shape of triangle.
Answer: D
Explanation:
Erosional landforms include V-shaped valleys, interlocking spurs, waterfalls and gorges. Meanders and oxbow lakes are formed from erosion and deposition. Depositional landforms include floodplains
Which macromolecule is a primary component of cell walls, and which argument provides evidence for how the structure of this molecule relates to its purpose within the cell wall?
Cellulose, a complex carbohydrate that helps to sustain and preserve the plant cell, is a macromolecule that is a major component of cell walls.
The main element of the cell wall is cellulose, a polymerized carbohydrate that is arranged into microfibrils. This macromolecule's primary job is to sustain, fortify, and safeguard the plant cell.
Its own structure is the justification that best shows how important cellulose is to the cell wall. Hemicellulose, a different carbohydrate, connects the network of microfibrils formed by cellulose. These microfibrils are structured in at least three layers. Cell development is possible because of the structure's strength, resistance, and elasticity.
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What are the characteristics of the reproductive strategy shown in the image?
protection from predators
low parental involvement
high percentage of offspring reach reproductive age
offspring independent after birth
(Image contains a Dog surrounded by her puppies)
Answer: In that case the right option is protection from predators.
Explanation.
Dogs protect their puppies from predators, there are many kinds of predators that are threats to domestic or guard dogs. For example, the two main types are birds of prey and coyotes. They are excellent hunters especially of the dogs and cats weighing less than 25 pounds. They can easily took dogs of smaller sizes for which the mother dog always protect her puppies from predators when they are small. Dogs have the strong instinct of protection for the survival of their off springs.
Answer:
protection from predators
I hope this helps
Which sentence best shows the results of a substitution mutation in the DNA
Answer: Swapped nucleotide during the DNA replication.
Explanation:
For example, during replication, thymine nucleotide must be inserted in a place of guanine nucleotide.
What is the probability that a mother with type AB blood and a father with type O blood will have a child with type O blood?
Each parent has a 50% chance of passing down the O gene. So each child has a 25% chance of ending up with an O blood type.
Can AB and O produce AB?An AB and O couple producing an AB child cannot be explained in terms of the usual inheritance patterns. One would not expect the cord blood result to be AB when the mother is type O.
Thus, there is 25% possibility.
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What two types of cells contain chloroplasts?
Answer:
The two types of cells those contain chloroplasts are plant cells and algae.
Explanation:
Chloroplasts are double membrane bound cell organelles of plant cell which has envelope, stroma and lamellar system. It is found in green plants and algae as a photosynthetic apparatus. It contains chlorophyll which is a photosynthetic pigment that receives the energy from sunlight to converts it into the energy molecules called ATP. The shape of chloroplast is variable ; most common is discoid.Final answer:
Plant cells and algal cells are the two types of cells that contain chloroplasts, which are organelles responsible for photosynthesis.
Explanation:
Two types of cells that contain chloroplasts are plant cells and algal cells. Chloroplasts are special organelles where the process of photosynthesis takes place, using chlorophyll to convert solar energy into chemical energy in the form of glucose, which serves as food for the plant. In addition to plant cells, some groups of eukaryotes called algae also contain cells equipped with chloroplasts. Like plant cells, algal cells can have one or more chloroplasts, which are important for their photosynthetic activities.
Photosynthetic cells in plants are typically found in the mesophyll, the middle layer of cells in leaves. In aquatic environments, algae harness light energy with the help of chloroplasts as well. The presence of chloroplasts is fundamental to these organisms, as it allows them to produce their own food through photosynthesis, defining their role as autotrophs within ecosystems.
which is the best procedure of separating a mixture of maize bean and sugar
Answer:
here are several methods of separating mixtures. The common ones are:
1. Winnowing
The wind is used to separate wharves (chaff), small sticks, and dry leaves, from grains or seeds by blowing the chaff away.
Chaff is usually lighter than the grains.2. Sieving
a sieve is used to separate mixtures of particles of different sizes. For example stones from flour.
The larger particles remain on the sieve while the finer ones pass through.
3. Picking
Here the large particles are separated from smaller ones by observing them and using the hands to remove the unwanted ones.
For example, stones are separated from rice or beans in this way.
4. Filtering
This method is used to separate a liquid from particles that cannot dissolve in it.
For example, separating sand from water using filter paper or piece of cloth.5. Decanting
This is when a liquid is separated from large particles of solids by pouring the liquid out gently.
For example, pouring off kerosene that has mixed with tiny ball bearings.
Explanation:
The best procedure for separating a mixture of maize, bean, and sugar involves physical and chemical separation techniques such as hand picking, sieving, magnetism, dissolving, filtering, evaporating, and density gradient.
Explanation:The best procedure for separating a mixture of maize, bean, and sugar is using a combination of physical and chemical separation techniques. Here is a step-by-step process:
Separate the large particles by hand picking or using a sieve to remove any visible pieces of maize, bean, and sugar. Use a magnet to separate any iron filings that may be present in the mixture. Add water to the mixture to dissolve the sugar. The sugar will separate from the maize and bean. Filter the mixture to remove the liquid portion, which will contain the dissolved sugar. Evaporate the water from the filtrate to obtain pure sugar crystals. Separately, use a density gradient technique to separate the maize particles from the bean particles. The maize will settle at the bottom, while the bean will float on top. Remove the floating bean particles and collect the settled maize particles. Learn more about Separating mixture of maize, bean, and sugar here:https://brainly.com/question/24945228
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One way to increase the number of organisms in an endangered species is to let the few remaining individuals o
that species breed. However, this breeding may also lead to species extinction because inbreeding over a short
period of time may -
F produce a different species
increase fertility
o increase beneficial mutations
o reduce genetic diversity
2m
Chrome OS System
Sign-in has changed
Final answer:
Inbreeding among the remaining individuals of an endangered species may lead to a reduction in genetic diversity, causing inbreeding depression and increasing the risk of extinction.
Explanation:
One concern with allowing the few remaining individuals of an endangered species to breed is that it may lead to a reduction in genetic diversity. Inbreeding, which is the mating of closely related individuals, can often cause adverse effects known as inbreeding depression. This mating strategy tends to bring together deleterious recessive mutations, which can result in abnormalities and increased susceptibility to diseases. For example, if a rare recessive allele causing disease is present within a population, the likelihood of two carriers mating and passing the disease to their offspring increases dramatically when the population size is small and inbreeding occurs. Therefore, the option that correctly completes the statement on how inbreeding over a short period of time may lead to species extinction is through the reduction of genetic diversity.
What happens when the atmosphere interacts with the lithosphere?
Answer:
A
Explanation:
Gases are released from volcanic eruptions.
And took test (:
Growing rain gardens like the one shown here is one way communities can help the environment. These shallow gardens contain
native plants with deep roots, wild grasses, and flowers. They are established near runoff sources, like driveways, to catch rainwater
before it flows into sewers and ditches. Capturing clean rainwater helps replenish local groundwater, instead of going to waste down
a sewer. Rain gardens naturally infiltrate water that may have picked up chemicals from lawns, roofs, or driveways while also
providing a habitat for local wildlife. Based on this information, what is another environmental benefit of rain gardens?
es )
They absorb air pollution caused by local factories.
They prevent weeds from killing non-native plant life.
They provide native fruits and vegetables for farmer's markets.
They soak up excess water that can potentially lead to flooding.
Submit
Ecology and Interdependence
Please help
A)they absorb air pollution caused by local factories
B)they prevent weeds from killing non native plant life
C)they provide native fruits and vegetables for farmers markets
D)they soak up excess water that can potentially lead to flooding
Answer:
The correct option is D) They soak up excess water that can potentially lead to flooding.
Explanation:
A rain garden can be described as a depressed area in a landscape which comprises of plants like native shrubs and flowers. The primary purpose of building a rain garden is to hold and soak in rainwater. This causes to prevent a situation such as a flood because most of the excess water is trapped by the plants. Hence, situations such as erosion and flooding can be decreased by rain gardens.
Below are the three main organs that make up the plant body.
The parts of a plant are labeled. The top green leaf part is labeled A. The stem is labeled B. The part that is underground is labeled C.
What is the main function of the structure that is identified as B in the picture above?
It anchors the plant.
It produces food.
It absorbs nutrients.
It supports the plant.
The answer isn't B. I think the answer is D.
Select the correct answer from each drop-down menu.
What is a type I survivorship curve?
A type I survivorship curve is a
. and shows Individuals that survive from childhood to adulthood. The greatest number
of deaths occurs during old age. An example of a type I curve is seen in
choices are concave curve,convex curve,straight line
next blank choice is humans oysters small birds
A graphical representation showing the number of an individual surviving the ages in various species groups is called the survivorship curve.
The correct answer is:
Option B. Convex curve
This can be explained as:
Type I survivorship graph is a convex arc that symbolizes individual survival momentum from youth to grown-up stage.It denotes high life proximity in earlier and mid-life whereas death rates get more elevated in elder age.This curve is plotted on the graph as convex in shape.Also, it represents the K strategy of the population.Therefore, it is a convex curve.
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A type I survivorship curve is a convex curve, and shows individuals that survive during old age. An example of a convex curve in a type I survivorship curve is humans.
A type I survivorship curve is a convex curve and shows individuals that have a high probability of surviving through early and middle life but a steep decline in the number of survivors in old age. This type of curve typically represents species that invest a lot of time and resources into the care of their offspring, resulting in low mortality rates in the early stages of life. Humans are a prime example of a species with a type I survivorship curve. Other examples include large mammals such as elephants and whales. These species tend to produce fewer offspring but provide substantial parental care to ensure the survival of their young. The convex shape of the curve illustrates the high survival rate of individuals until they reach old age, at which point mortality rates increase sharply. This pattern is indicative of K-selected species, which focus on quality over quantity in their reproductive strategy.
The correct question is:
Select the correct answer from each drop-down menu. What is a type I survivorship curve? A type I survivorship curve is a ◻ , and shows individuals that survive during old age. An example of concave curve h in ◻ Hint: Concave forms a "cave" convex curve straight line
1. Describe the pattern of air circulation between an
area of low pressure and an area of high pressure.
Answer:
The sinking of cold air creates regions of high pressure and this air travels to lower pressure regions produced by the rising motion of warm air. This process results in air circulation.
Explanation:
what’s the difference between a dominant allele and a recessive allele
Answer:
key difference between dominant and recessive alleles is that dominant alleles are the alleles that give the phenotype, masking over the other phenotype, while recessive alleles are the alleles that are suppressed by the dominant allele.
Explanation:
Final answer:
A dominant allele is expressed in an organism's phenotype even if only one copy is present, while a recessive allele is only expressed if two copies are present. This expression pattern determines the visible traits, with dominant alleles masking recessive ones in heterozygous individuals.
Explanation:
Difference Between Dominant and Recessive Alleles
The main difference between a dominant allele and a recessive allele lies in their expression in an organism's phenotype. A dominant allele is always expressed in the phenotype even if just one copy is inherited. In contrast, a recessive allele can only be expressed in the phenotype if two copies are present. This means that in a heterozygous individual (one who has different alleles at a particular gene locus, such as 'Aa'), the dominant allele (A) will mask the expression of the recessive allele (a).
As an example, if we consider the ABO blood group system, an individual inheriting one allele for blood type A and one for blood type O will have the blood type A because A is dominant over O. Meanwhile, for a person to have blood type O, a recessive trait, they must inherit two O alleles.
It is important to understand that dominance does not imply superiority or higher frequency in the population but simply reflects the mechanism of inheritance and expression of certain characteristics. Indeed, the same allele can be dominant in relation to one allele and recessive to another, illustrating the context-dependent nature of these terms.
Which molecule reads the amino acid sequence and builds the protein?
Answer:
The molecule of mRNA provides the code to synthesize a protein. In the process of translation, the mRNA attaches to a ribosome. Next, tRNA molecules shuttle the appropriate amino acids to the ribosome, one-by-one, coded by sequential triplet codons on the mRNA, until the protein is fully synthesized.
Answer: transfer RNA (tRNA)
Explanation: During protein synthesis, the mRNA strand produced by copying the DNA sequence moves to the cytoplasm where it gets attached to the ribosome. A ribosome is a site for protein synthesis. Protein synthesis is initiated when the ribosome comes in contact with the AUG codon (start codon). The mRNA moves through the ribosome three bases at a time where the tRNA brings the correct amino acid from the cytoplasm and adds it to the growing peptide chain.
A grown tiger began its life as a single fertilized egg. Which explains why a tiger
looks so much different as an adult than it did as a single fertilized egg.
All the genes are expressed.
Different genes are expressed at different times
Different cells have different genes.
As a tiger grows his genes change.
Answer:
As a tiger grows his genes change
Explanation:
Development from a fertilized egg to a mature organism depends on the expression of different genes at different times. In addition, gene expression can occur in different parts of the body at different times during development. As the fertilized egg begins to divide, different genes are either turned on or off. The activation of specific genes is the most important step in cell differentiation. As the tiger grows and develops, different genes are either turned on or off in the tiger’s various cells. This regulation is a key part of development and differentiation.
Scientists are testing the effect of different scrubber technologies on the removal of pollutants from coal power plants. The scrubbers use a slurry of limestone and water. Which of the following best describes the impact of modifying the slurry by increasing the amount of limestone? The amount of sulfur dioxide released will decrease. A The amount of ground-level ozone released will decrease. B The amount of water released will increase. C The amount of carbon monoxide released will increase.
Answer:
When a water and limestone slurry is used as a scrubber, the impact of modifying the slurry by increasing the amount of limestone has as a consequence that the amount of sulfur dioxide released will decrease.
Explanation:
One of the consequences of the use of coal as fuel is the emission of toxic gases, one of which is sulfur dioxide (SO₂), a colorless and toxic gas that can affect the health of humans and animals. That is why SO₂ scrubbers are necessary for the removal of this gas.
One of the most commonly used SO₂ scrubbers is the suspension of water and limestone, since the calcium (Ca) contained in the limestone reacts with the SO₂ to form calcium sulfide (CaS), which precipitates as a solid, decreasing the emission of SO₂ to the environment.
It is for this reason that, by increasing the amount of limestone in the scrubber slurry, more SO₂ will react, and the amount released from this gas will decrease.
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When a slurry of water and limestone is used as a scrubber, increasing the amount of limestone results in a decrease in the amount of sulfur dioxide released.
The scrubbers use a slurry of limestone and waterThe calcium (Ca) contained in the limestone reacts with the SO₂ to form calcium sulfide (CaS), which precipitates as a solid, decreasing the emission of SO₂ to the environment.
There are processes that recover SO2 in the form of some waste product. commercial interest and the processes with formation of residues. The methods that only aim to remove SO2, without recovery, can convert a problem of air pollution in water pollution or waste disposal problem solids, while recovery methods need a market for the product Final.
With this information, we can conclude that when a slurry of water and limestone is used as a scrubber, increasing the amount of limestone results in a decrease in the amount of sulfur dioxide released.
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