Explanation:
Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
How is DNA replicated?:
Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.
What triggers replication?
A schematic shows a double-stranded DNA molecule undergoing the replication process. The left side of the molecule is double-stranded. In the middle of the molecule, a globular yellow structure, representing the protein helicase, is bound to the ends of several nitrogenous bases on the lower strand. To the right of the helicase protein, the double helix has opened and the top strand has separated from the bottom. At right, a short segment of the newly replicated double-stranded DNA molecule is visible.
Helicase (yellow) unwinds the double helix.
The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands. As the helicase moves along the DNA molecule, it continues breaking these hydrogen bonds and separating the two polynucleotide chains.
A schematic shows a double-stranded DNA molecule undergoing the replication process. At right, the double helix has opened and the top strand has separated from the bottom. A globular yellow structure, representing the protein helicase, is bound to the ends of several nitrogenous bases on the lower strand. A red globular molecule, representing the enzyme primase, is bound to the lower DNA strand to the right of helicase.
While helicase and the initiator protein (not shown) separate the two polynucleotide chains, primase (red) assembles a primer. This primer permits the next step in the replication process.
Meanwhile, as the helicase separates the strands, another enzyme called primase briefly attaches to each strand and assembles a foundation at which replication can begin. This foundation is a short stretch of nucleotides called a prime
Which of the following is NOT part of the cell theory
Answer:
B, cells can absorb food and oxygen
Explanation:
The cell theory is the following:
- all cells come from other cells
- cells are the basic unit of life
- all living things are composed of cells
So B would be incorrect!
Hope this helps!
Where does the fetus normally develop?
Answer:
in the womb !!
Explanation:
hAve a good night
Answer:
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes.
Lung cells obtain sodium ions, and chlorine ions from the adjacent blood vessels by which process?
Answer:
Not sure about the sodium but you might be referring to the Chloride Shift in the lungs.
Explanation:
The silverfish begins life:
A.as a nymph
B.from a maggot
C.in the same form as the adult
D.from a larva
Is poaching considered a limiting factor? (please explain why or why not)
Answer: No, a limiting factor is something that you can’t survive without.
Explanation: Poaching is not a limiting factor.
Answer:
It is
Explanation:
because if someone is killing animals then that animal that animal that animal eats its thriving. Because of the change in popluation
Because DNA is replicated by using the original strands as a template, every DNA molecule has one _____ strand and one _______ strand.
A. Adenine, Thymine
B. Guanine, Cytosine
C. New, Original
D. Nucleotide, Carbohydrate
check out the image
Answer:
the image? I dont see one?????
Explanation:
What are three ways a plant's organ systems work together?
A The shoot system delivers food to the root system.
B. The root system delivers materials from the soil to the shoot
system
The ground tissue of the root system protects the vascular tissue
in roots
D. The ground tissue of the root system stores food for later use by
leaves
Answer: A, B, D
Explanation: credit to the comments on the other. I also did the test
The three ways through which a plant's organ systems work together are as follows:
The shoot system delivers food to the root system.The root system delivers materials from the soil to the shoot system. The ground tissue of the root system stores food for later use by leaves.Thus, the correct options are A, B, and D.
How do plants deliver water and nutrients to other parts?Plants deliver water and other nutrients to other parts with the help of vascular tissues like xylem and phloem.
Xylem transports water, nutrients, and other minerals from the soil to all parts.
Phloem mediates the migration of foods from the leaves to the rest of the plants.
The shoot system delivers food to the root system via the vascular tissue phloem. The root system delivers materials from the soil to the shoot system via the vascular tissue Xylem.
The ground tissue of the vascular plant is responsible for storing the carbohydrates constructed by the plants and utilized by the leaves when required.
Therefore, the correct options are A, B, and D.
To learn more about Vascular bundles, refer to the link:
https://brainly.in/question/652706
#SPJ5
Ventricles are chambers of heart which are:
Answer:
they are chambers located below the two atria.
the right ventricle receives deoxygenated blood whereas the left receives oxygenated blood which opens up into the aorta
What is the structure of DNA? 20 points.
Answer:
Basic structure of DNA
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
DNA structure and function
DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. These chromosomes are made up of thousands of shorter segments of DNA, called genes.
Explanation:
DNA is made up of molecules called nucleotides. Nucleotides are attached together to form two long strands that spiral to create a structure called a double helix. If you think of the double helix structure as a ladder, the phosphate and sugar molecules would be the sides, while the bases would be the rungs.
Choose all of the areas in which the United States invoked the Roosevelt Corollary to the Monroe Doctrine.
The correct answer to this open question is the following.
Unfortunately, you did not attach the options to answer this question.
What we can do to help you is commenting on the following.
Throughout history, the United States invoked the Roosevelt Corollary to the Monroe Doctrine to accomplish some imperialistic and interventionists goals in different Central American and South American countries.
We can set some examples here. For instance, that was the case of the US intervention in the Island of Cuba, in Nicaragua, Dominican Republic, Hati, and the US presence for so many years in the Panama Canal.
Let's have in mind that the Roosevelt Corollary to the Monroe Doctrine was originally called for intervening in Latin American countries that could not pay their debt to European creditors.
The message the US wanted to convey to European superpowers that had interests in this region was that from now on, it was going to be the US business to intervene in the Americas. If Europe tried to intervene, it was going to be understood as direct aggression to the United States.
helpppppp plsssssssss
Answer:
the net force would be 45n
Explanation:
20n+25n=45
3. Cardiac muscle cells make up which type of muscles?
(5 Points)
O A. Voluntary
B. Smooth Muscle Cells
C. Skeletal Muscle Cells
O D. Involuntary
Explanation:
voluntary muscles are ones that work without you having to think about it..example heart, lungs. part of the APT system...Autonomic ...
What is the purpose of the carbs on the lipid bilayer?
A. to make the proteins do their job
B. it serves as the ID of the cell so the immune system does not attack it, and helps it adhere to other cells.
C. to make the model a fluid mosaic
D. it serves as the lipid bilayer control center, helping things realize their potential
Answer:
B
Explanation:
Earth travels in an ———— , oval around the sun.
A. arch
B.rectangle
C.Ellipse
D.circle
Answer:
D.circle
Explanation:
Answer:
Arch
Explanation:
PLSSS HELP, the question is what does this represent.
Answer:
metaphase
Explanation:
WILL MARK BRAINLIEST!!!
Recipient Blood Type A can Receive from:
Recipient Blood Type B can Receive from:
Recipient Blood Type AB can Receive from:
Recipient Blood Type O can Receive from:
Where is the liver and pancreas ?
Answer:The pancreas is located behind the stomach in the upper left abdomen. It is surrounded by other organs including the small intestine, liver, and spleen.
Explanation:
Answer:
The pancreas is located behind the stomach in the upper left abdomen. It is surrounded by other organs including the small intestine, liver, and spleen.
IM GIVING 30 POINTS TO WHOEVER ANSWERS THESE
1- how does modern technology provide evidence that all organisms have a common ancestor?
2- what new discoveries about evolution have modern technology made possible?
Answer: 1. Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
2. The changes in our behavioral patterns and adaptations that are caused by these technological advances could prove to be the primary driving forces behind the next stage of evolution for our species. These members of the species are more likely to reproduce and pass their genes on to their children.
Explanation:
Why are communication signals important in everyday life?
How protein are important in carrying out essential functions
What conclusions can you make about the effectiveness of rewilding projects.
Answer:
Benefits of rewilding
Draws down carbon from the atmosphere. ...
Helps wildlife adapt to climate change. ...
Reverses biodiversity loss. ...
Supports diversified economic opportunities. ...
Improves our health and wellbeing.
*From another source, not my own words*
I wrote this sentence because I did not want to plagiarize as other people do
Explanation: :)
Which term describes the energy of molecules in motion?
thermal energy
atomic energy
material energy
molecular energy
Answer:
I'm thinking molecular energy.
Explanation:
just because you know, molecules, molecular... that's all I got I'm afraid :(
A student is studying the structural details of an animal cell, a plant cell, and a prokaryotic cell. He notes that a prokaryotic cell and a plant cell possess a protective cell wall. He also observes that both eukaryotic cells have membrane-bound organelles and are larger in size than the prokaryotic cell. Which other conclusion is also supported by the study?
Answer:
What are the answer choices?
Explanation:
If there are none, say that prokaryotic cells have a cell wall, large vacole and chloroplast.
Through the process of _____, a gene from one organism can be combined with a gene from another organism.
Thanks in advance for the people that helped and tried to help me!
Property of Matter
The mass of a book on Earth is 140 grams.
1- Calculate the mass of the book on the moon.
(On moon surface gravity (g) is 1.6 N/kg)
Answer:
The mass would be 140 grams.
Because mass wouldn't change in different places but weight would change.
Which of the following is not a response to stress
Answer:
You might want to add the question options
Explanation:
this is an organism whose genome has been altered by the techniques of genetic engineering so that its DNA contains one or more genes not normally found there
Answer:
A transgenic, or genetically modified, organism is one that has been altered through recombinant DNA technology, which involves either the combining of DNA from different genomes or the insertion of foreign DNA into a genome.
explain why the structure of DNA is described as a double helix
Answer:
The double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a spiral staircase. Each chain has a backbone in which a sugar (deoxyribose) and a phosphate group alternate.
Climax community- most stable community that takes hundreds of years to develop. The types of organisms change due to __?__.
competition
random chance
being the luckiest
Answer:
its competition
Explanation:
