Answer:
A hypothesis is a prediction for a specific situation,while a theory is used to make predictions for many similar situation
Explanation:
An hypothesis is a thought or prediction that a scientist might think would happen while a theory is a experiment to determine if the hypothesis is correct.
A hypothesis is a specific prediction about a new phenomenon based on a theory, while a theory is a broad explanation that explains larger bodies of data.
Explanation:A hypothesis is a specific prediction about a new phenomenon that should be observed if a particular theory is accurate. It is an explanation that relies on just a few key concepts. Hypotheses are often specific predictions about what will happen in a particular study. They are developed by considering existing evidence and using reasoning to infer what will happen in the specific context of interest.
Hypotheses are often but not always derived from theories. So a hypothesis is often a prediction based on a theory but some hypotheses are atheoretical and only after a set of observations has been made is a theory developed. This is because theories are broad in nature and explain larger bodies of data. So if our research question is really original then we may need to collect some data and make some observations before we can develop a broader theory.
Which of the following small objects revolve around the Sun?
A. meteoroids
OB. comets
C.
asteroids
OD. all of these
Answer:
OD. all of the above
Explanation:
Asteroids are lumps of rock or iron that orbit the sun.
Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion.
Asteroids orbit the Sun in a region between Mars and Jupiter. This "belt" of asteroids.
A scientist is studying an organism with a mutation which reduces the efficiency of tetrad formation. This defect would most likely affect the ability to:
Final answer:
A mutation that reduces the efficiency of tetrad formation would affect the ability of an organism to undergo meiosis properly, leading to errors in crossing over and recombination.
Explanation:
A mutation that reduces the efficiency of tetrad formation would most likely affect the ability of an organism to undergo meiosis properly.
Tetrad formation occurs during prophase I of meiosis, when homologous chromosomes pair up and form structures called tetrads. This process allows for crossing over and genetic recombination, which are important for genetic diversity.
If the efficiency of tetrad formation is reduced, it could lead to errors in crossing over and recombination, resulting in abnormal chromosome segregation and reduced genetic diversity.
According to cell theory, which of the following are
made of cells? Check all that apply
flowers
rocks
blood
water
bactena
sugar
skin
If the producer have 35,000 kg of biomass, calculate and label the amount of biomass at the other 4 levels
Answer:
If the producer have 35,000 kg of biomass so the primary consumers have 3500 kg of biomass, the secondary consumers have 350 kg of biomass and tertiary consumers have 35 kg of biomass.
Explanation:
Primary consumers are those organisms which feed on producers. Only 10 percent of energy is transferred from producers and the remaining is lost in the form of heat energy. Secondary consumers feeds on primary consumers and tertiary consumers are those organisms which feed on secondary consumers. In each trophic levels, only 10 percent of energy is transferred and 90 percent is lost as heat.
10. When a certain plant is without water for an extended period of time, Guard cells close openings in the leaves of the plant. This activity conserves
water and illustrates
A) maintenance of a dynamic equilibrium through detection and response to stimuli.
B) a response to one biotic factor in the environment
C) cellular communication involving the action of nerve cells and receptor sites
D) an increase in rate of growth due to a low concentration of water
Explanation:
(B) A response to one biotic factor in the environment.
Three distinctive natural elements influence the opening and shutting of a plant stoma such as light, water and carbon dioxide fixations. Plant stomata close in haziness and when conditions are dry. Since plant cells need carbon dioxide for photosynthesis, carbon dioxide fixations are another key factor.The Stomatal pores in plants The solutes inside them by opening and The measure of water and shutting their guard cells utilizing osmotic weight. The end goal for plants to deliver vitality and keep up cell work, their cells experience the profoundly complex procedure of photosynthesis. Basic right now the stoma. A few ecological elements influence stomata opening, including hormone, light quality and force, air moistness, barometrically CO2 focus, biotic and abiotic stresses.Explanation:
Two profoundly particular cells, the guard cells that encompass the stomatal pore, can coordinate natural and endogenous signals so as to control the stomatal gap and consequently the gas exchange.The take-up of [tex]CO_2[/tex] is related with lost water by leaves. Control of the size of the stomatal opening upgrades the productivity of water use through powerful changes in the turgor of the guard cells. The opening and shutting of stomata is controlled by the reconciliation of environmental signals and endogenous hormonal stimuli.Select all the correct answers.
Which two statements are true for fungi?
They can produce their own food because they have chlorophyll.
They often form symbiotic relationships with trees.
They digest food externally.
They can absorb nutrients from food, even though they lack digestive enzymes.
Answer:
They often form symbiotic relationships with trees and they can digest food
b and c
Explanation:
what collison turned earth into a molten ball of fiery lava
Answer:
can you explain more please. I think you are talking about the Big Bang Theory but i don't understand you question.
Explanation:
What is the best description of the chromosomes by the end of metaphase of mitosis?
The chromosomes reach opposite sides of the cell and begin to be incorporated into two new nuclei.
The chromosomes have coiled and become more compact.
The chromosomes separate at the centromere and begin to move apart.
The chromosome pairs collect in a line across the middle of the cell.
Answer:
The chromosome pairs collect in a line across the middle of the cell.
Explanation:
Chromosomes at the conclusion of the mitotic metaphase aligned of chromosomal pairs forms in the center of the cell, hence option d is correct.
What is mitosis?When this complex is activated, mitosis's metaphase comes to a close and anaphase begins. The two new cells will be identical since the chromosomes are in alignment and have sister chromatids on opposite sides of the metaphase plate.
Mitosis is a cell cycle that promotes cell proliferation and the replacement of damaged cells, thus, mitosis produces two daughter cells that are identical to one another.
All eukaryotic cells divide through mitosis, with the exception of germline cells, which produce gametes through meiosis.
Therefore, by the end of the metaphase of mitosis chromosomes are aligned at the midpoint of the cell, hence option d is correct.
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in which phase of meiosis does the chromosome number change from diploid to haploid
The chromosomes number changes from diploid to haploid during anaphase I of Meiosis I. Subsequently, Meiosis II separates sister chromatids to result in four unique haploid cells.
Explanation:Change from Diploid to Haploid in MeiosisThe change from diploid to haploid chromosome numbers during meiosis occurs after Meiosis I. Specifically, it is during anaphase I of Meiosis I that homologous chromosomes are separated and pulled to opposite poles of the cell. This reductional division halves the chromosome number from 2n to n, thus from diploid to haploid, setting the stage for the formation of haploid gametes after Meiosis II.
During Meiosis II, the sister chromatids within the two daughter cells formed in Meiosis I separate, yielding four unique haploid cells. This second division is akin to mitosis but occurs with half the number of chromosomes. Therefore, it is in Meiosis I that the reduction from diploid to haploid truly occurs, solidified by the subsequent processes in Meiosis II. Each resultant cell has a haploid number of chromosomes, carrying genetic information from both parents, due to the assortment of chromosomes and crossing over events that occurred.
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Anaphase I of meiosis is when the chromosome number changes from diploid to haploid.
During anaphase I of meiosis, homologous chromosomes separate and move to opposite poles of the cell. This results in the reduction of chromosome number from diploid (2n) to haploid (n) in each daughter cell, as each cell receives only one set of chromosomes instead of the homologous pairs.
How did Griffith help build our understanding of genetics
Describe photosynthesis using words that a 5-year-old could understand.
Answer:
Explanation:
Photosynthesis is the process in which green plants use sunlight to make their own food. Photosynthesis is necessary for life on Earth. Without it there would be no green plants, and without green plants there would be no animals.
Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas. Chlorophyll is a substance in all green plants, especially in the leaves. Plants take in water from the soil and carbon dioxide from the air.
Extension: If one mole of glucose contains 2870 KJ of energy and one mole of ATP releases 30.7 KJ of energy during a reaction, what is the percentage of energy in glucose that is available for the body to use?
The percentage of energy in glucose that is available for the body to use is 40.6%.
Explanation:
Total used energy is the energy released by the hydrolysis of one mole of ATP and it is 30.7 kJ.
The total possible energy (used pus released as heat) is 2870 kJ.
Hydrolysis of 38 moles ATP gives = 38 [tex]\times[/tex] 30.7
= 1166.6 kJ of useful energy
The percentage of energy is transformed into useful energy, we can calculate by simple proportion,
2870 : 100 = 1166.6 : x
x = (1166.6 [tex]\times[/tex] 100) / 2870
x = 40.6% of energy is transformed into useful energy.
40.6 % is the percentage of energy in glucose that is available for the body to use.
Explanation:
We know that during cellular respiration one mole of glucose gives 38 molecules of ATP.
Given that 1 mole of ATP gives 30.7 KJ of energy.
So 38 molecules of ATP would give
38 x 30.7 KJ of energy.
= 1166 KJ would be yielded by 38 moles of ATP.
1 mole of glucose contains 2870 KJ of energy.
100 % of energy is released in glucose metabolism and x percent is used. It is given by the equation
2870: 100 = 1166:x
x= [tex]\frac{1166 x 100}{2870}[/tex]
= 40.6 %
40.6% of energy is available for the body to use and rest of the energy is dissipated in the form of heat when 1 mole of glucose undergoes combustion in cellular respiration producing 38 moles of ATP.
2 Points
Which of the following is a good reason to use a simulation in an
experiment?
One of the good reason to use simulation in an experiment is to predict the outcome of an event in the real world.
Explanation:
Simulation is a programming software which helps in imaging or easy understanding of any experimental concept virtually. For example, if we enter the details regarding an element, the simulation can draw the structure of that element. Also it may predict the working of the bonds and other parameters in different conditions based on classical and quantum theoretical laws. So a researcher can compare the results obtained from simulation and also from experimental results.
In other words, simulation will help a researcher to have an assumption about the behavior of the sample in real world conditions.
on 2
Where is energy made in a cell?
Select one:
a. In ribosomes
b. In the mitochondria
c. In the cytoplasm
d. In the nucleus
Air pollution cannot be directly fatal to humans.
Please select the best answer from the choices provided
T
F
Answer:
The correct answer is false since air pollution is a fusion of solid particles and gases in the air. This kills many of Americans every year.
Which side effect is directly caused by draining the groundwater from a region?
Ground water pumping is the side effect that is directly caused by draining the groundwater from a region.
Explanation:
The ground water depletion is caused by the sustained ground water pumping, deterioration of water quality, reduction of water in streams and lakes or land subsidence.
The negative effects of ground water depletion are Lowering of water table, increased costs, reduced surface water supplies, land subsidence and water quality concerns.
Pollution is the main causes of groundwater depletion. For example pesticides and fertilizers move to the groundwater supplies over time. Road salt, toxic substances from mining sites, and used motor oil also drain into groundwater.
Which of the following is a function of the cell membrane?
producing energy
creating new cells
eliminating of waste
replacing damaged cells
Answer:
Eliminating of waste
Explanation
Cell membrane plays a very important role in role in the exchange of materials. When the level of a certain material raised from a specific level and outside the cell the level of that material is low. Then that material moved from higher to lower level through the cell membrane. This process is called as diffusion. And by this method waste material eliminate from the cell.
In prokaryotes, certain proteins act to regulate genes by binding to DNA. What could be the effect of these binding proteins? Select all of the answers that apply.
A. They may act to turn on gene transcription.
B. They may act to turn off gene transcription.
C. They may become added to DNA, and then be transcribed.
D. They may remove a gene from DNA.
E. They may alter the nucleotide sequence in a gene.
The effect of these binding proteins include the following below
They may act to turn on gene transcription.They may act to turn off gene transcription.Prokaryote are organisms which lack a defined nucleus as a result of the
absence of the nuclear membrane. Certain proteins bind to DNA and help
in the process of gene regulation to ensure adequate replication.
The effects either turns the gene transcription on and off which is the
process that involves making copies of RNA copy of a gene sequence in the
organisms.
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You tested for the presence of four different
by adding
three test tubes
to the
DONE
NUTRIENTS & INDICATORS
You tested for the presence of four (4) different nutrients by adding indicators to the three (3) test tubes.
What are nutrients?Nutrients can be defined as the chemical compounds or substances that are present in food, and they're needed by the body of a living organism for healthy growth, reproduction, development, functioning, and reproduction.
Generally, there are different types of nutrients and these include the following:
ProteinFatCarbohydrate VitaminsMineralsBased on the experiment conducted, we tested for the presence of four (4) different nutrients that can be found in a variety of foods by adding indicators to the three (3) test tubes.
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Although science strives for objectivity by basing conclusions and explanations on data gathered during scientific investigations, some
subjectivity still exists in science, since it is a human endeavor. What beneficial qualities exist in scientific processes, methods, and
knowledge as a result of science being a human endeavor?
OA. creativity and discovery
OB. bias and favoritism
Oc. inaccuracies and errors
OD. all of these
The answer is A: Creativity and discovery
What is the list of the six kingdoms of classification from simplelest to most complex?
Answer:
Archaebacteria.
Eubacteria.
Protista.
Fungi.
Plants.
Animals.
Explanation:
I remember this when I did physical science in high school.
what is the most complex level of organization in an organism ?
Wastewater treatment plants can make wastewater drinkable again. Which of
the following is a technology used to remove disease causing organisms
from wastewater?
O
A. Allowing solid wastes to settle out of the water
O
B. Adding bacteria that digest waste to the water
O
c. Skimming materials from the surface of the water
O
D. Releasing treated water into nearby streams
The technology used to remove disease-causing organisms from wastewater at treatment plants allows solid wastes to settle out of the water. Hence, the correct option is A.
Wastewater treatment plants can make wastewater drinkable again by removing disease-causing organisms from wastewater. The technology used for this purpose is disinfection, which involves treating the water with chlorine, ozone, ultraviolet light, or bleach to kill most microbes. This step is crucial in ensuring the water is safe for human consumption and preventing waterborne diseases.
Allowing solid wastes to settle out of the water is part of the primary treatment which primarily removes solid and organic matter.Adding bacteria that digest waste to the water is part of the secondary treatment process, where aerobic bacteria decompose organic solids.Skimming materials from the water's surface can happen during pretreatment or throughout the process as part of maintaining water quality.Releasing treated water into nearby streams is typically the final step after the water has been adequately treated and is deemed safe to re-enter the environment.How would you distinguish adaptations and variations for a younger student?
"Imagine a Polar Bear. You know they live in the Arctic, but then the Summer season comes. The polar bear has to move away from the breaking ice. Once the heat kicks in, the polar bear's warm fur makes it harder to survive. The bear has the ability to last in the heat for a long while, going back and forth into the water and land. After a while of doing this, the polar bear's fur becomes suited to the harsh light. Once Winter returns, the bear waits for the heat to fade and for the ice to form back. Once the ice is formed, the polar bear knows that its back to its old warm fur procedure."
Generally, It has been possible to the distinguish between the species in which there are a lot of the variations and two species by analyzing the DNA sequences.
Sequence homo-logy would makes has the reference to the similarity between the DNA sequences of two different organisms. The linear order of the nucleotides in DNA sequences can be used to distinguish species.
There are regions in the DNA molecule that exhibit more variation between species than within a species, which can be used to separate different species.
It is possible to distinguish between a species in which there are a lot of variations and two species by analyzing DNA sequences.
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Samuel ate some vegetable soup. What process is at work to allow Samuel to break down the soup so that his body will be
able to produce energy?
growth
absorption
excretion
digestion
Samuel ate some vegetable soup. Digestion process is at work to allow Samuel to break down the soup so that his body will be able to produce energy.
Option: D
Explanation:
There are majorly four steps in food processing in human body, these are ingestion, digestion, absorption and elimination. There are six major phases covered by digestion: ingestion, acceleration, mechanical or physical digestion, chemical digestion, absorption and defecation. The first of these procedures, ingestion, relates to the absorption of food via the mouth into the food canal.
Digestive system allow the transformation of massive insoluble food molecules into small water-soluble food components to dissolve them into the watery plasma of the blood. Many smaller particles are ingested into the bloodstream in certain species through the small intestine.
Based on the root vict, what does the word victorious mean?
A) having experienced something
B) having stolen something
C) having seen something
D) having won something
idk
Answer:
having experienced something
ANSWER::::::)))))))))))))))) having experience in something
Which market structure predominantly uses products differentiation to attract consumers
Answer: Monopolistic competition
Explanation:
Answer:
Monopolistic competition
Explanation:
this is the right answer for Edmentum/Plato
How would you account for the fact that fossils of fish are not present in the older layers of rock?
Answer:
The fish did not yet exist when the old layers of rocks were deposited. In fact, animals with hard parts did not evolve until about 600 million years ago, which is only about 13% of the 4.5 billion year age of the Earth. Multicellular animals without hard parts left tracks in older sediments, but had no fossilize-able body parts.
Explanation:
Given the mRNA codons AGC UUC GAU, what would be the resulting amino acid sequence after translation?
a. Aspartic acid-Phenylalanine-Serine
b. Serine-Phenylalanine-Aspartic acid
c. None of the above
d. Methionine-Asparagine-Leucine
e. Serine-Lysine-Leucine
Answer:
Option B) Serine-Phenylalanine-Aspartic acid
Explanation:
mRNA codons AGC code for the amino acid, serine while UUC code for phenylanine and GAU code for aspartic acid.
Thus, the resulting amino acid sequence after translation will be a tripeptide containing Serine-Phenylalanine-Aspartic acid
Answer:
b. Serine-Phenylalanine-Aspartic acid
Explanation:
Gene expression, which is the process of using the information present in a gene to synthesize protein, involves two major stages: transcription and translation. Transcription involves the synthesis of a mRNA molecule using a DNA template. It is the process of copying the information in a DNA into a complementary mRNA molecule.
Once the mRNA has been synthesized, it proceeds for translation in the ribosome (organnelle for protein synthesis). However, in the ribosome, the nuceleotide sequence of the mRNA is read three at a time. This group of three nucleotide sequence is called CODON. The set of all codons make up the GENETIC CODE. Each coding specifies a particular amino acid i.e. reading a codon means addition of a particular amino acid to the polypeptide chain.
This question contains a mRNA with nuceleotide sequence: AGC UUC GAU, which consists of three codons. Hence, three amino acids will be produced.
In the genetic code provided as an attachment to this question, we can obtain which CODON specifies which AMINO ACID.
AGC codes for Serine
UUC codes for Phenylalanine
GAU codes for Aspartic acid
Hence, mRNA sequence, AGC UUC GAU will produce an amino acid sequence Serine-Phenylalanine-Aspartic acid.
Describe the structure of a phospholipid use the term polar and nonpolar in your answer
Answer:
Key Points
# Phospholipids consist of a glycerol molecule, two fatty acids, and a phosphate group that is modified by an alcohol.
# The phosphate group is the negatively-charged polar head, which is hydrophilic.
#The fatty acid chains are the uncharged, nonpolar tails, which are hydrophobic.
#Since the tails are hydrophobic, they face the inside, away from the water and meet in the inner region of the membrane.
#Since the heads are hydrophilic, they face outward and are attracted to the intracellular and extracellular fluid.
#If phospholipids are placed in water, they form into micelles, which are lipid molecules that arrange themselves in a spherical form in aqueous solutions.
Terms:
#micelleLipid molecules that arrange themselves in a spherical form in aqueous solutions.
#amphipathicDescribing a molecule, such as a detergent, which has both hydrophobic and hydrophilic groups.
:Defining Characteristics of Phospholipids:
Phospholipids are major components of the plasma membrane, the outermost layer of animal cells. Like fats, they are composed of fatty acid chains attached to a glycerol backbone. Unlike triglycerides, which have three fatty acids, phospholipids have two fatty acids that help form a diacylglycerol. The third carbon of the glycerol backbone is also occupied by a modified phosphate group However, just a phosphate group attached to a diacylglycerol does not qualify as a phospholipid. This would be considered a phosphatidate (diacylglycerol 3-phosphate), the precursor to phospholipids.
A phospholipid is a lipid molecule that forms the basis of cell membranes. It has a polar head that is attracted to water, and nonpolar tails that repel water. In an aqueous environment, this causes phospholipids to arrange themselves into a bilayer which selectively allows substances pass in and out of the cell.
Explanation:A phospholipid is a type of lipid molecule that is a key component of all biological membranes. It has a unique structure which includes a polar head and two nonpolar tails. The polar head is composed of a phosphate group and is hydrophilic, meaning it is attracted to water. The nonpolar tails are fatty acid chains and are hydrophobic, meaning they repel water. When in a aqueous environment, phospholipids arrange themselves into a bilayer, with the polar heads facing the water and the nonpolar tails facing each other. This structure is crucial to its function in the cell membrane, where it forms a barrier that selectively allows substances to pass in and out of the cell.
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