What is the most likely effect on the energy pyramid if all producers are removed from the ecosystem??
Answer:
c) the energy pyramid will be completely disturbed.
Explanation:
Where does a peptide bond form?
A peptide bond is a covalent bond formed between two amino acids in a protein. It links the carboxylic group of one amino acid to the amine group of the other.
Which trilobite characteristic did not change through time? a. shape of eyes c. number of body segments b. 3-lobed body d. number of spines d. number of spines is a trilobite characteristic does not change through time.
The right answer is the lobed body.
The name trilobite comes from the subdivision of the body into three longitudinal lobes:
A medial lobe, the rachis,
And two lateral lobes, the pleura.
There is also a subdivision into three regions from front to back: the cephalon ("head"), the thorax and the pygidium ("tail").
The number of spines is a trilobite characteristic that did not change over time, unlike the shape of their eyes or the number of body segments.
Explanation:Trilobites are an extinct group of marine arachnomorph arthropods. They are recognized by their characteristic 3-lobed, 3-segmented body structure. Although trilobites underwent numerous changes over time due to evolution, one characteristic that did not change was the number of spines. The number of spines remained consistent throughout the trilobite's existence. This is in contrast to other trilobite characteristics such as the shape of their eyes or the number of body segments, both of which evolved over time in response to changing environmental conditions.
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Environmental science, check my answers?
1. Most familiar life forms live in regions of biomes that humans inhabit.
True <
False
2. Biodiversity is the variety of life forms that exist or existed in the past.
True <
False
3. Changes in an organism can't occur because of an outside force, such as a massive earthquake.
True
False
Your best answers are T T F
6.
Compared to the time in Earth's history before humans appeared, rates of soil erosion are _____.
about the same
faster
slower
more unpredictable
7.
The process responsible for moving material downslope under the influence of gravity is called _____.
erosion
weathering
mass movement
soil formation
8.
Why can the removal of vegetation trigger mass movements?
The soil loses nutrients and begins to crumble.
The plant roots bind the soil and regolith together.
The shaking triggers mass movements.
The plan6.
Compared to the time in Earth's history before humans appeared, rates of soil erosion are _____.
about the same
faster
slower
more unpredictable
7.
The process responsible for moving material downslope under the influence of gravity is called _____.
erosion
weathering
mass movement
soil formation
8.
Why can the removal of vegetation trigger mass movements?
The soil loses nutrients and begins to crumble.
The plant roots bind the soil and regolith together.
The shaking triggers mass movements.
The plan ...?
6. Answer;
- Faster
Explanation;
Compared to the time in Earth's history before humans appeared, rates of soil erosion are faster.
-Soil erosion is the wearing apart of topsoil. Topsoil is the top covering of soil and is the abundant fertile because it includes the several natural, nutrient-rich minerals. Every year, around 75 billion tons of soil is disintegrated from the land—a rate that is about 13–40 times as quick as the typical rate of erosion.
Additionally, some human activities associated with building structures increases the rate of erosion
7. Answer;
-Mass movement
The process responsible for moving material downslope under the influence of gravity is called mass movement.
Explanation;
-A mass movement is the geomorphic process through which soil, sand, regolith, and rock move downslope typically as a solid, continuous or discontinuous mass, largely under the force of gravity.
-It involves the sudden movement of a block of material along a flat, inclined surface is called a rock slide or a slide.
8. Answer;
The plant roots bind the soil and regolith together.
The removal of vegetation may trigger mass movements because the plant roots bind the soil and regolith together.
Explanation;
-Vegetation removal can trigger mass wasting or mass movement as vegetation stabilizes soil. When it is removed from a slope, the slope is vulnerable to water and wind erosion.
A gardener accidentally trims the leaves of a green plant too short. The leaves are now much smaller. He notices that the plants grow more slowly than it used to. Which sentence best explains why the plant grows more slowly?
A - The plants has too many thylakoids in its cells
B - The plant now gets too much sunlight to be healthy.
C - The platn has more cholorplast in its cells
D - the plant has less cholorphyll to produce energy.
The right answer is D.
Light is essential for any plant so as chlorophyll. They allow plants to convert light energy into sugars.
It appears that a correlation links productivity and chlorophyll under special conditions. The more chlorophyll there is, the more electron transfer is ensured, the more photosynthesis is amplified and the more oxygen and glucose are produced.
The amount of Chlorophyll contained in the leaves provides information on the health of the plant, its vigor and ensures that its Nitrogen requirements are met. The trace elements necessary for the plant are drawn by the roots in the soil.
Several species of warblers can live in the same spruce tree ONLY because they?
have different habitats within the tree.
don’t eat food from the tree.
occupy different niches within the tree.
can find different temperatures within the tree.
Frogs have lungs for breathing, but they also absorb dissolved oxygen directly through their skin. This allows respiration to occur when they are underwater. When they are on land, mucus keeps their skin moist to continue to absorb dissolved oxygen from the air. Which statement about water is best illustrated by this example?
A. Liquid water can transport nutrients.
B. Water breaks down into oxygen molecules for respiration.
C. Water is found in every cell of an animal’s body.
D. Liquid water is necessary for plants and animals.
Answer: B. Water breaks down into oxygen molecules for respiration.
Water is the required for photosynthesis, a process by which plants (terrestrial and aquatic) makes their food by utilizing water as a reactant to produce oxygen and glucose as product. The glucose act as a source of energy for conducting various metabolic processes in plants but oxygen is released in the air.
[tex]6CO_2\ \ \ \ +6H_2O\rightarrow\ C_6H_{12}O_6+6O_2\\carbon\ \ \ \ water\ \ \ \ \ \ \ \ glucose\ \ \ \ \ \ \ oxygen\\ dioxide[/tex]
This oxygen is necessary for terrestrial and aquatic animals for respiration. Therefore, water breaks down into oxygen by the process of photosynthesis, hence water plays important role in respiration in living beings.
The sports drink G2 has 17 grams of carbohydrate in a 20 ounce bottle. How many calories does this provide from carbohydrate?
68 calories
Explanation;Carbohydrates is one of the biomolecules, others being nucleic acids, lipids and proteins. Carbohydrates are the major sources of energy in the body.Carbohydrates are made up of carbon, oxygen and hydrogen. They are classified as monosaccharides, disaccharides and polysaccharides.Each gram of carbohydrates yields energy equivalent to 4 calories. Therefore, 17 grams will yield (17×4) 68 calories.All cells have DNA or pther genetic materials . Is this apart of the cell theory or not apart
How big is a blood cell? How does its size compare to Dust Mites, and then to the E. coli bacteria
What happens after pollen lands on the stigma of a flower? it grows a tube to travel down to the ovary.it fertilizes the plant at the stigma.it grows a tube to travel to the style.it grows a tube to travel to the petal.?
Answer: it grows a tube to travel down to the ovary
Explanation:
As a result of pollination, pollen grain lands on the sigma of the pistil or carpel. On the stigma pollen grain begins to germinate and grows a long pollen tube. The pollen tube grows longer and makes its way from the stigma, down the style and reaches to the ovary. Pollen tube carries two male gametes or sex cells. One male gamete fertilize the egg cell to produce zygote and the gamete fuses with polar nuclei to form primary endosperm cell.
Answer:
It grows a tube to travel down to the ovary
Explanation:
7. This question is based on the following poem.
Some say life's a Monopoly game,
spread like a picnic to kill the grass,
assuring no winners save some ants,
until amid the fading rants,
none there are to punch one's pass
into the halls of fame.
The metaphor for life in this poem is
A. a picnic.
B. halls of fame.
C. some ants.
D. a monopoly game.
The metaphor for life in the poem is a Monopoly game, as the poem begins with 'Some say life's a Monopoly game,' comparing life's journey to the board game.
The metaphor for life in the poem given is D. a Monopoly game. The opening line of the poem, "Some say life's a Monopoly game," explicitly states that life is being compared to the board game Monopoly. This is an example of metaphor as a literary device, where life is not literally a board game, but it is being compared to one in order to illustrate the idea that life, like Monopoly, has various ups and downs, successes and failures, and is ultimately a game of chance and strategy.
Which of the following statements is not true of the use of genetically engineered bacteria for insulin production? Using genetically engineered bacteria makes insulin production much faster and produces larger quantities. Genetically engineered bacteria make higher quality insulin that is more easily used by diabetics. Genetically engineered insulin made from bacteria is much cheaper to produce.
The diagram below represents two cells viewed using the same magnification with the same microscope.
One possible conclusion that can be drawn about the activity of these two cells is that
Based on the visible features, one possible conclusion is that Cell B is more active than Cell A. The correct option is B. more active transport occurs in cell A than cell B.
Based on the image you sent, here are some possible conclusions that can be drawn about the activity of the two cells:
Cell A:
Less active: The presence of a cell wall suggests Cell A is a plant cell. Plant cells typically have less metabolic activity compared to animal cells due to their slower growth rates and photosynthetic energy production.
Storing energy: The large central vacuole in Cell A could indicate storage of excess nutrients or waste products, suggesting lower metabolic activity compared to Cell B.
Cell B:
More active: The absence of a cell wall suggests Cell B is an animal cell. Animal cells are generally more metabolically active than plant cells due to their diverse functions and constant need for energy from external sources.
Engaged in protein synthesis: The prominent rough endoplasmic reticulum (RER) in Cell B indicates high protein production activity, suggesting a more active metabolic state compared to Cell A.
Complete Question:
The diagram below represents two cells viewed using the same magnification with the same microscope.
One possible conclusion that can be drawn about the activity of these two cells is that:
Although the plant can grow nearly 200 feet tall, it has a very shallow root system. This feature best suits it to climates that receive regular precipitation.
In which biome would you most likely find this plant?
A) chaparral
B) savanna
C) temperate forest
D) tundra
Which is a goal of the Human Genome Project?
to identify the 3 billion genes that comprise the human genome
to sequence the genome of every living individual
to address the ethical consequences of genomic research
to establish a population of human clones
The right option is; to identify the 3 billion genes that comprise the human genome
The Genome Project (HGP) is the world’s largest international scientific research project that has the goal of mapping the nucleotides (more than 3 billion), that makes up the whole human genome, and recognizing the structure and functions of the entire genes. Several organizations that contributed to the project include; National Human Genome Research Institute (NHGRI) of Health, international partners in France, United Kingdom, the U.S. Department of Energy, and many universities and laboratories in the United States.
The Human Genome Project was aimed at finding out an accurate and complete sequence of the human genome that comprises around 3 billion base pairs in the DNA.
Further Explanation:
A scientific research project based internationally was Human Genome Project (HGP) whose goal was to determine the genetic makeup or base pair sequence of the human DNA. It also aimed at mapping and identifying all the genes belonging to the human genome based on their functional and physical viewpoint. It is the world’s largest biological project that has been collaborated so far. In the year 1984, the US government initially planned the project which was launched later in 1990 and completed in 2001. The project was funded by the National Institutes of Health (NIH), the US government and several other groups from all over the world.
The aim of the HGP was to identify and make the correct map of the nucleotides that are present in the haploid reference genome of a human which in turn contains more than 3 billion base pairs. Every individual has a unique set of nucleotide which represents his/her genome. The mapping process includes the sequencing of the individuals in small numbers which is followed by gathering the information in order to find out the complete sequence for every single chromosome. Therefore, the end result would be a mosaic of the human genome which does not represent just one individual.
The project could not estimate all the sequences of the DNA present in the human cells. It was only able to sequence the genome with euchromatic regions that make up around 92.1% of the genome. The heterochromatic regions were not sequenced under this project which was present in the telomeres and centromeres.
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Answer Details:
Grade: Secondary School
Chapter: Human Genome Project
Subject: Biology
Keywords:
Human Genome Project, genome, DNA, nucleotides, base pairs, haploid reference genome, chromosomes, euchromatic region, heterochromatic region, centromeres, telomeres.
If a person with O blood type produces offspring with a person with B blood type, then what percentage of their offspring will be type O in the best case scenario?
Answer:
50%
Explanation:
Using a Punnett square, the best case will be a cross between a person who is genetically BO and a person who is genetically OO.
In the best-case scenario, 100% of the offspring will be type O.
Explanation:In order to determine the percentage of offspring that will be type O in the best-case scenario when a person with O blood type produces offspring with a person with B blood type, we need to consider the genotypes of both parents and the possible combinations of alleles.
The person with O blood type has the genotype ii, meaning they have two recessive alleles for the gene that determines blood type. The person with B blood type can either have the genotype BB or BO, with BB representing two dominant alleles and BO representing one dominant and one recessive allele.
When these two individuals have offspring, the possible genotypes are: iB and iO. Both of these genotypes result in the O blood type. Therefore, in the best-case scenario, 100% of their offspring will be type O.
Why is it necessary to eliminate absolutely all invasive fire ant colonies to eradicate the invasive population?
Someone plz help I'm super confused
Why are chloroplast green
The role of enzymes in a human
How has the Douglas-fir adapted to enable its survival in the taiga biome?
a.
low growing
b.
perennial
c.
waxy needles
d.
survive on limited nutrients
Answer: c. waxy needles
Taiga is the biome with needle leaf trees. It is a cold biome. Douglas-fir have long, thin and waxy needle shaped leaves. Wax prevents the loss of water through transpiration and also prevents freezing and leaves being drying out.
Which observation provides evidence that a cell is most likely a prokaryote?
A. It has DNA that is not contained within a nucleus.
B. It has a long tail-like structure for movement.
C. It has a Golgi apparatus for vesicle production.
D. It has large organelles inside the cell.
Answer:
The correct answer would be A. It has DNA that is not contained within a nucleus.
The main difference between prokaryotic and eukaryotic cell is the absence of a well-defined nucleus and other membrane-bound organelles like the Golgi body, mitochondria et cetera in a prokaryotic cell.
The DNA in the prokaryotic cell floats freely in the cytoplasm in the region called nucleoid which means nucleus-like.
Thus, an observation like the absence of a nucleus can provide the evidence that a cell is most likely a prokaryote.
What type of cell, once it enters the tissues, is converted into a macrophage that attacks invaders by phagocytosis?
#1: Which of the following is true of the electrons in the Bohr model of an atom?
A. They exist at specific energy levels.
B. They cannot move from one orbital to another.
C. They are equally close to the nucleus.
D. They give off energy as they jump to a higher level.
If a corn plant has a genotype SsTt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant?
(A) St, sT
(B) ST, st
(C) SS, Tt, ST, st
(D) ST, sT, St, st If a corn plant has a genotype SsTt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant?
(A) St, sT
(B) ST, st
(C) SS, Tt, ST, st
(D) ST, sT, St, st
Answer:
The correct answer would be option D.
Explanation:
Pollen of a plant is a gamete, that contains half of the alleles are required to produce the plant. Pollen fuse with stigma and complete the required alleles or genetic information.
Possible combinations in pollen would be one allele from each trait in every form either dominant or recessive. So ST, St, sT, st. would be the correct possible genetic combination present in a single grain.
Thus, the correct answer is option D.
Answer:
Option D
Explanation:
There are two different traits represented by the term "SsTt". Where "S" is the allele for a dominant trait 1 and "s" is the allele for a recessive trait 1. Like wise "T" is the allele for a dominant trait 2 and "t" is the allele for recessive trait 2.
In a genetic combination , both the allels of both the traits will pair up with each other one by one.
i.e "T" will pair up with both "S" and "s" to form "TS" and "Ts" gametes
Similarly "t"will pair up with both "S" and "s" to form "tS" and "ts" gametes
Hence, option D is correct
Which of the gazelle’s naturally selected traits is shown in this picture to be an evolutionary advantage?
a)feeding only at certain times of the day
b)coat color for blending in with dry grass
c)specialized gut due to a diet of grasses
d)specific gender roles to diminish predation
Which of the following plant adaptations protects grassland plants from grazers?
a.
long roots
b.
growing low to the ground
c.
water storage
d.
growth pattern
The correct answer is:
d. growth pattern
Explanation:
Plants in the grassland must face dry situations, fires, and grazing animals. They have long, narrow leaves, long roots, soft stems, and can even go lethargic to sustain their tough environment. They have adjusted how they grow and scatter their pollen and seeds so that more plants can live in this incredible habitat.Average growth is the series of changes in height, weight, and head circumference that are harmonious with authorized standards for a released population.
Which of these statements is true about sperm and egg cells?
a.sperm and egg cells are made during mitosis.
b.sperm and egg cells have as many chromosomes as any other kind of cell.
c.sperm and egg cells are made during meiosis.
d.sperm and egg cells are about the same size.
Sperm and egg cells are made during meiosis, which produces haploid gametes with half the number of chromosomes compared to typical body cells.
Explanation:The correct statement about sperm and egg cells is that they are made during meiosis. This is a crucial process that ensures each sperm and egg cell, known as gametes, has half the number of chromosomes compared to typical body cells, and thus, they are referred to as haploid cells. When a sperm and egg cell combine during fertilization, they form a diploid zygote, which has a complete set of chromosomes, one set from each parent.
Let's address the options one by one:
The statement that sperm and egg cells are made during mitosis is incorrect, as mitosis produces diploid cells, which are not capable of sexual reproduction.Saying that sperm and egg cells have as many chromosomes as any other kind of cell is incorrect, because most body cells are diploid and have twice the number of chromosomes as haploid sperm and egg cells.Sperm and egg cells are significantly different in size; the egg cell is much larger than the sperm cell, so the statement that they are about the same size is untrue.Therefore, the correct answer to the question is c. sperm and egg cells are made during meiosis.
Sperm and egg cells are made during meiosis and are haploid, each containing a single set of chromosomes. They differ significantly in size, with the egg being much larger than the sperm.
Explanation:The true statement about sperm and egg cells is that sperm and egg cells are made during meiosis. These cells, also known as gametes or haploid sex cells, contain only half the number of chromosomes compared to somatic or body cells. Sperm and egg cells, or gametes, are specifically designed for the purpose of sexual reproduction. Sperm cells are produced through the process called spermatogenesis, while egg cells or ova are produced through oogenesis. Both these processes involve meiosis, which ensures that each gamete carries one set of chromosomes, making them haploid (1n).
Furthermore, regarding their size, sperm and egg cells are quite different; sperm cells are much smaller and have a tail-like structure called a flagellum which aids in mobility, while egg cells are considerably larger and lack such mobility structures. Thus, the option stating that sperm and egg cells are about the same size is incorrect.