Scientists use a technique called ________ to make multiple copies of DNA sequences. Scientists can also make _______ by combining DNA from two different sources. One of the sources may be bacteria, which have circular DNA molecules called _________ When bacteria undergo transformation, they can be identified by _______.
1. gel electrophoresis
DNA ligation
recombinant DNA
the polymerase chain reaction (PCR)
2. plasmids
polyploidy
messenger RNA
recombinant DNA
3. polyploidy
recombinant DNA
plasmids
telomeres
4. nucleotides
genetic markers
telomeres
polyploidy
Answers
Answer:
the polymerase chain reaction (PCR)
recombinant DNA
plasmids
genetic markers
Explanation:
The answer is "the polymerase chain reaction (PCR), recombinant DNA, plasmids, and genetic markers".
Fill in the blank:To generate multiple copies of DNA sequences, researchers employ a technique known as polymerase chain reaction (PCR). Recombination of the DNA can also be created by combining DNA from two sources. Bacteria with circular DNA molecules known as plasmids could be one of the origins. Generic markers could be used to identify microorganisms that have undergone a transformation.Find out more about the DNA cloning here:
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Related Questions
can someone do #11 for me
Answers
Answer:
The correct answer is -
a. Amino acid
b. dipeptide
c. dehydration synthesis.
Explanation:
The monomer is a molecule that reacts with one or more monomer molecules to form a chain or polymer. In the given reaction the two amino acids react together to form a dipeptide.
The dimer is a molecule that is made up of two monomers and in this reaction, two amino acids form a dimer dipeptide. The dehydration synthesis is a reaction in which a water molecule is lost.
Cytoplasm is found...
A only in prokaryotic cells.
B in all cells.
C. in plant cells only.
Answers
Answer:
C i think
Explanation:
sorry if its wrong :(
Explanations: Cytoplasm is found in all cells. This includes plants cells, animal cells, prokaryotic cells and eukaryotic cells. They hold all the components in the cell in place.
Within the peptidoglycan layer, the crossbridges that connect the chains of alternating sugar molecules extend between _____.
Answers
Within the peptidoglycan layer, the cross-bridges that connect the chains of alternating sugar molecules extend between two N-acetylmuramic acid molecules. It is a polymer of sugars and amino acids.
Peptidoglycan layers and sugarsA peptidoglycan layer is a polymeric unit composed of many sugar molecules (monosaccharides) and amino acids.
The peptidoglycan layer forms the cell wall of bacteria, by forming the outside part of the plasma membrane.
This layer consists of many glycan chains of N-acetylglucosamine and N-acetylmuramic acid linked together through peptide chains.
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Plants need three things for photosynthesis to occur: water, carbon dioxide and sunlight. How do those things enter a plant? Water, along with important minerals, enters a plant from the soil where the plant's roots act like straws "drinking" it up. Carbon dioxide enters a plant from the atmosphere, and it comes in through the leaves. More specifically, carbon dioxide enters a plant through tiny pores or openings on leaves called stomata. Sunlight, obviously, comes from the sun. But how does it enter the plant to be converted into chemical energy that the plant can use? Well, green plants are green because of a pigment called chlorophyll. That pigment inside of plant cells absorbs the sun's energy, making it possible for photosynthesis to occur.
Based on the passage, if human cells had a lot of chlorophyll, they would most likely
A
not need to drink water.
B
be green.
C
breathe carbon dioxide.
D
have leaves.
Answers
A DNA statement has changed from AAT TAG AAA to ATT AGA AA . What type of mutation would this be
Answers
Answer:
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.
Explanation:
the cascade of complement proteins form a ring around the antigen-antibody complex and have what actions on non–self-cells?
Answers
The complement proteins form a ring around the antigen-antibody complex and have actions on non-self cells including opsonization, membrane attack complex formation, and inflammation.
When complement proteins bind to an antigen-antibody complex, they form a ring-like structure called the membrane attack complex (MAC). This MAC can have several actions on non-self cells:
1. Opsonization: Complement proteins can coat the surface of non-self cells, marking them for recognition and destruction by phagocytic cells like macrophages and neutrophils.
This process, known as opsonization, enhances the efficiency of phagocytosis, facilitating the removal of the non-self cells.
2. Membrane Attack Complex Formation: The complement proteins also form the membrane attack complex (MAC) by assembling into a pore-like structure on the surface of non-self cells. This MAC disrupts the integrity of the cell membrane, leading to cell lysis and destruction.
It creates a channel that allows the influx of ions and fluids into the targeted cell, leading to its rupture and subsequent elimination.
3. Inflammation: The complement system can trigger inflammation as a response to non-self cells. Complement proteins can act as signaling molecules, attracting immune cells to the site of infection or injury.
Overall, the complement proteins form a ring around the antigen-antibody complex and exert multiple actions on non-self cells, including opsonization to enhance phagocytosis, formation of the membrane attack complex leading to cell lysis, and triggering inflammation to recruit and activate immune cells for targeted elimination of non-self cells.
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LD
11
12
13
Kaya had an organ transplant. She went to the doctor a week later, and the doctor did a blood test. Her lymphocyte count
had increased. She went to the doctor a month later for the same test, and her lymphocyte count was higher. What is the
best explanation as to why her lymphocyte levels were increasing?
O Kaya was given antibiotics to prevent infections.
Kaya's antigens were attacking the tissue.
Kaya was not tissue typed prior to her surgery, and her body is mounting an immune response.
O Kaya took her immunosuppressant drugs weekly, which increased her lymphocyte count.
Answers
Answer:
The best explanation for the increased lymphocyte levels in Kaya is that she was not tissue typed prior to her surgery, and her body is mounting an immune response.
Explanation:
When performing an organ transplant, it must be verified whether the organ to be transplanted is compatible -by tissue typing- with the recipient, since it is recognized as a foreign body by the body and can be rejected.
One of the immunological responses to organ rejection is called cell rejection, involving T-helper and cytotoxic lymphocytes.
It is very likely that in Kaya's case the tests have not been performed correctly, and she is experiencing rejection of the organ she received. The progressive increase in lymphocytes may be an indication of this.
The other options are not possible because:
Administering antibiotics should not raise lymphocyte levels. There is no evidence of antigen attack. Immunosuppressant drugs do not increase lymphocyte count.Through interaction with the hypothalamus, the ______ gland detects when the optimal level of hormones has been reached and maintains it with additional gonadotropin secretions.
Answers
Through interaction with the hypothalamus, the pituitary gland detects when the optimal level of hormones has been reached and maintains it with additional gonadotropin secretions.
What are hormones?Hormones are molecules which serve as chemical messengers in the body.
The site of action of hormones are at far not close to where they are secreted, and are therefore, transported in blood to their site of cation.
Hormones are secreted by endocrine and exocrine glands.
The master gland of the body is the pituitary gland. The hormones secreted by the pituitary gland controls the activities of other hormones.
In conclusion, hormones are chemical messengers in the body.
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The biochemical reaction that joins two amino acids to form a dipeptide is accompanied by:_________
Answers
The biochemical reaction that joins two amino acids to form a dipeptide is accompanied by the release of a molecule of water (H2O).
Peptidase enzymes catalyse this activity, sometimes referred to as a peptide bond formation or condensation reaction. In this reaction, a water molecule and a covalent bond (-CO-NH-) are created when an amino acid's carboxyl group (-COOH) combines with another amino acid's amino group (-NH2). The two amino acids are joined by this bond to create a dipeptide, a little piece of a protein.
An essential stage in the creation of proteins, which are composed of lengthy chains of amino acids, is the production of a peptide bond between two amino acids. This reaction is an important stage in the process of protein synthesis because the amino acid composition of a protein defines its unique three-dimensional structure and function.
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what are reactants in a chemical reaction?
Answers
Answer:
The substances that go into a chemical reaction
Explanation:
E. What type of relationship does the frog and the carp have?
Answers
The frog and the carp have a symbiotic relationship.
Symbiosis is a type of relationship in which two organisms of different species live together in close association. In this case, the frog benefits from the carp by feeding on the insects that the carp disturbs while swimming, and the carp benefits from the frog by having the parasites on its body eaten by the frog. This relationship is called mutualism, which is a type of symbiosis where both organisms benefit from the relationship. The frog gets food, and the carp gets protection from parasites. It is important to note that the relationship between the frog and the carp is not one-sided. Both organisms play an essential role in this partnership, and if one of them were to disappear, it would have a significant impact on the other's survival. The frog and the carp have evolved together, and their relationship is an excellent example of how different species can coexist and thrive in nature.
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Lipids commonly contain fatty acids. what are the two parts of a fatty acid?check all that apply?
Answers
Hope this helped you.
What type of cross is a mating between two individuals that are both heterozygous for the same two genes
Answers
Answer:
Dihybrid cross
Explanation:
Jerry is recording the amount of daylight his town receives throughout the month of September. He records the data each Monday of the month. His results are shown in the table below.
Answers
According to Jerry's data, the amount of daylight is getting shorter. If this pattern holds, daytime hours will continue to shorten, and nighttime hours will lengthen.
How does the timing of day and night change?During the observations, Jerry is recording the amount of daylight his town receives throughout the month of September.
The length of day and night on the surface of the earth varies from season to season due to the axial tilt of the earth's rotation axis with regard to its orbital axis.
Therefore, the length of the nighttime will increase the next week is the prediction according to Jerry's data.
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The given question is incomplete, so the most probable complete question is,
Jerry is recording the amount of daylight his town receives throughout the month of September. He records the data each Monday of the month. His results are shown in the table below.
Hours of Daylight Received
Week Hours of Daylight
1 8.34
2 8.12
3 7.98
4 7.63
Which of the following predictions is supported by the data Jerry collected?
A. The amount of daylight will increase the next month.
B. The length of the nighttime will increase the next week.
C. The weather in Jerry's town will be hotter the next month.
D. The Sun will not rise until 8:00 A.M. the next week.
causes water to bead up on surfaces (glass, fabric, leaf), which slows wetting of the surface and inhibits the cleaning process. hydrophobicity hydrophylicity surface tension surfactant
Answers
Surface tension causes water to bead up on surfaces (glass, fabric, leaf) which slows the wetting of the surface and inhibits the cleaning process.
Surface tension is a phenomenon in which the surface of a liquid, where the liquid is in proximity with a gas, acts as a thin elastic sheet. This term is generally used when the liquid surface is in contact with gas (such as the air).
Lower surface tension means the cleaning fluid can get into compact spaces easily. It directly influences the ability of the cleaning fluid to wet a surface and evidently, you can't clean if you can't wet.
Various intermolecular forces, such as Van der Waals forces, bring out the liquid particles together. Along the surface, the particles are tuged toward the rest of the liquid.
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1) Why environment is important for survival of a species? ______________________________________________________________________________ ______________________________________________________________________________
2) Compare natural and man-made environments. ______________________________________________________________________________ ______________________________________________________________________________
3) Distinguish between biotic and abiotic factors of environment. ______________________________________________________________________________
______________________________________________________________________________
4) How does human population growth and resource effect environment? ______________________________________________________________________________ ______________________________________________________________________________
5) Is temperature important factor of environment? Explain. ______________________________________________________________________________ ______________________________________________________________________________
Answers
Answer:Q1)Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. ... Even if certain species are affected by pollution, climate change or human activities, the ecosystem as a whole may adapt and survive
Q2)Man made environments are the artificially made environments made by man resembling natural environment.
Q3)Biotic factors are living or once-living organisms in the ecosystem. ... Introduction In ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems.
Q4)More people require more resources, which means that as the population increases, the Earth's resources deplete more rapidly.
Q5)An environmental factor, ecological factor or eco factor is any factor, abiotic or biotic, that influences living organisms.
Explanation:
A cladogram is shown below.
a) Why is the amoeba considered an outgroup in this cladogram?
b) What trait does a salmon have that an earthworm does not?
c) What does this cladogram tell you about the evolutionary relationship of the traits of jaws and limbs?
d) A squirrel glider is an organism with jaws, limbs, and hair. It does not use a placenta for reproduction. Where do you think this organism would belong in the cladogram?
Answers
Answer:
a) it is the only unicellular organism in this cladogram
b) a salmon has jaws
c) it tells that before having limbs the ancestors developed jaws as for a feature for the organism to survive easily
d) it is on the same level as the kangroo
(8.9B) The picture below shows two plates colliding. Neither one can be subducted into the
mantle because they both have a density that is much lower than the mantle's density.
Folded mountains often form as a result. Which type of plate boundary would most likely
result in mountain formation?
A Convergent Boundary
B Divergent Boundary
C Transform Boundary
D None of the above
HELP ME PLEASE PLEASEE
Answers
B.divergent Boundry
i wish it will help you
name the tissue in which water is transported to the leaves
name the two types of cells of this tissue that play an important role in the transport process
Answers
In vascular plant, Xylem is one of the two tissue involve in transport water from roots to stems and leaves and also transports nutrients.
Two types of cells of this tissue are tracheids and vessel elements which are involved in transport.
What is the function of xylem ?Xylem and phloem are known are two major vascular tissue.
Xylem tissue involve in transport of water and some nutrients from the roots to the leaves.
Phloem tissue involve transport of sucrose and other nutrients throughout the plant.
The passive transport called xylem sap occur through a long tube xylem cells.
The phenomenon where the xylem sap allow the flow upwards against gravity is called capillary action.
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what color would you expect to see on 4 quadrant enzymatic tst card if a microorganism was unable to breakdown trytophan
Answers
If a microorganism is unable to break down tryptophan, the color observed on a 4-quadrant enzymatic test card would be yellow.
Enzymatic test cards are used to identify specific metabolic capabilities of microorganisms by detecting the presence or absence of specific enzymes.
In this case, the test card would contain tryptophan as a substrate and an indicator system that changes color in the presence of the enzyme tryptophanase, which breaks down tryptophan.
If the microorganism lacks the enzyme, there would be no breakdown of tryptophan, and therefore, no color change would occur.
The absence of the color change indicates a negative result, indicating the inability of the microorganism to metabolize tryptophan.
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a. If you were designing a pigment to maximize light capture in a new kind of solar array what light absorbing properties would have?
b. what molecule in the sumary equation for photosynthesis ends up in the sugars made by photosynthesis?
c. When Jasmine was a baby, her parents planted a jasmine plant weighing 1 kg in a container in their yard with 50 kg of soil. When Jasmine was 18, the plant was estimated to weigh 75 kg. Then it was time to transplant the plant into the family yard so it could continue growing. When the soil in the container was weighed, its mass was 50 kg. Over the years Jasmine's parents neither added nor removed soil from the container with the plant in it. How did the plant increase in mass by 74 kg while the soil did not change in mass and never needed adding to over the years?
Answers
Answer:
Following are the solution to the given points:
Explanation:
In point a:
When a light absorption dye was to be introduced to optimize the plant's absorbing capacity, the paint could absorb wide different wavelengths besides the observable light spectrum. It must also absorb the UV only at IR light rate to maximize the fluorescence intensity.
In point b:
Its molecule in the production of pentose sugar is the nitrogen and hydrogen atoms of carbon dioxide and water ions of air. Its water oxygen atoms are emitted through oxygen atoms during this phase.
In point c:
Its plant increased with weight while decreasing the weight of the earth, so because manufactured goods needed for plant growth are carbon dioxide from water and air, provided to a plant every day and nitrogen extracted from of the atmosphere through means of microbial materials into nitrogen. So, even if the plant raised its weight, the soil does not change the weight.
in order to make the heart more responsive to epinephrine, thyroid hormone must also act on the heart muscles. this hormonal coordination is referred to as a(n) effect.
Answers
In order to make the heart more responsive to epinephrine, thyroid hormone must also act on the heart muscles. this hormonal coordination is referred to as permissive effect.
In stressful situation, the body responds by calling for the release of hormones that provide a burst of energy. The hormones epinephrine and norepinephrine are then released by the adrenal medulla.
Permissive function of hormones means one hormone strive its full effect only in the presence of other hormone. Example may include Thyroid hormone increases the number of beta androgenic receptors. These receptors are required for epinephrine. So without thyroid hormone the effect of epinephrine on target cell would not be effective.
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All but one of the following is an endogenous factor: Application rate of herbicide. Acre feet of irrigation water applied. Price of herbicide per gallon. Decision as to which herbicide would be best given farm's IPM strategy
Answers
The factor that is an endogenous factor is: d. Decision as to which herbicide would be best given the farm's IPM (Integrated Pest Management) strategy.
What is an Endogenous Factor?An endogenous factor refers to a factor that originates from within the system or process being studied. In the given options, the endogenous factor is d. Decision as to which herbicide would be best given the farm's IPM (Integrated Pest Management) strategy.
This factor is influenced by internal considerations and decisions made within the system itself. On the other hand, options a, b, and c are exogenous factors because they are external to the system and can affect the system but are not directly determined by it.
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Children inherit half of their genes from parents. Explain Why?
Answers
Answer:
This is because the two parents share one or more common ancestors and so carry some of the same genetic material. If both partners carry the same inherited gene change, their children are more likely to have a genetic condition.
Answer:
yes
Explanation:
The chromosomes in cells line up in pairs and exchange bits of genetic material before forming an egg or sperm cell. Each mature egg and sperm then has its own specific combination of genes, which means children will inherit a slightly different set of DNA from each parent.
Some white fat cells can undergo a process known as browning as they take on characteristics of brown fat, most notably the activity of uncoupled proteins. What are these fat cells called
Answers
According to the research, brite adipocytes take on characteristics of brown fat, most notably the activity of uncoupled proteins.
What are adipocytes?They are a type of cell that are located exclusively in the adipose tissue of the areas that are responsible for accumulating fat.
Brite adipocytes are those adipose cells similar to brown adipocytes that can accumulate in the classic deposits of white adipose tissue.
Therefore, we can conclude that according to the research, brite adipocytes take on characteristics of brown fat, most notably the activity of uncoupled proteins.
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how is cte different from tbi
Answers
tbi stands for traumatic brain injury. it can be caused by multiple hits to the head and or concussions. tbi’s are credited as being a early sign of dementia
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rna polymerase requires a primer to initiate polynucleotide synthesis. (True or False)
Answers
The given statement, "RNA polymerase requires a primer to initiate polynucleotide synthesis," is false because it can start the de novo synthesis of RNA transcript.
RNA polymerase or more specifically called DNA dependent RNA polymerase is the enzyme involved in the process of transcription where RNA is synthesized using one of the two DNA strands as the template. There are various types of this enzyme which transcribe different types of amino acids.
RNA stands for Ribonucleic Acid. It can act as a genetic material in few organisms, particularly in viruses. There can be various forms of RNA, like r-RNA, m-RNA, t-RNA, etc. The type of RNA that contains the information from DNA is m-RNA.
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examine the phylogenetic tree showing the evolutionarily relationships of five organisms which statement most accurately explains the relationship between organisms and the other organisms 
Answers
A phylogenetic analyses is a visual representation of how different creatures have evolved over time. Phylogenetic trees are theories, not proven truths.
What in biology does phylogeny mean?A phylogenetic tree, sometimes called a phylogeny, is a visual representation of how several species, creatures, or genes have descended over time from a single common ancestor.
What purposes does phylogeny serve?A potent method for determining how modern species have evolved is phylogenetics. Scientists can better comprehend how species have developed while also gaining insight into the differences and similarities between various species by examining phylogenetic trees.
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which is it?
a , b, c, or d?
Answers
Aaron, Blaine, and Cruz are solving the equation
4
7
(7 − n) = −1.
Aaron started his solution by multiplying both sides
of the equation by
7
4
.
Blaine started by using the distributive property to
multiply
4
7
by both 7 and −n.
Cruz started by dividing both sides of the equation
by
4
7
.
Which of the following is true?
Blaine and Cruz made an error in picking their first steps.
Cruz made an error in picking his first step.
All three made an error because the right side equals -1.
All three chose a valid first step toward solving the equation.
Answers
Cruz made an error in picking his first step. Therefore, option B is correct.
Aaron's step: Multiplying both sides by 7/4. This step is valid because multiplying both sides of an equation by the same non-zero value does not change equality.
Blaine's step: Using the distributive property to multiply 4/7 by both 7 and -n. This step is also valid because it correctly applies the distributive property to the expression.
Cruz's step: Dividing both sides by 4/7. This step is incorrect because dividing both sides of an equation by a non-zero value does not preserve equality. To solve for 'n', Cruz should have multiplied both sides by 7 - n instead.
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Answer:
yo
Explanation:
its D
or
All three chose a valid first step toward solving the equation.