BIOLOGY HIGH SCHOOL

How is most DNA duplication is the body accomplished?

Answers

Answer 1
Answer: most DNA duplicate through a process called mitosis 
Answer 2
Answer: DNA carries the information for making all of the cell's proteins.These pro­teins implement all of the functions of a living organism anddetermine the organism'­s characteristics. When the cell reproduces, ithas to pass all of this information on to the daughter cells.Before a cell can reproduce, it must first replicate,or make a copy of, its DNA. Where DNA replication occurs depends uponwhether the cells is a prokaryote or a eukaryote (see the RNA sidebar onthe previous page for more about the types of cells). DNA replicationoccurs in the cytoplasm of prokaryotes and in the nucleus of eukaryotes.Regardless of where DNA replication occurs, the basic process is thesame.The structure of DNA lends itself easily to DNA replication. Each side of the double helix runs in opposite (anti-parallel)directions. The beauty of this structure is that it can unzip down themiddle and each side can serve as a pattern or template for the otherside (called semi-conservative replication). However, DNA does not unzip entirely. It unzips in a small area called a replication fork, which then moves down the entire length of the molecule.Let's look at the details:An enzyme called DNA gyrase makes a nick in the double helix and each side separatesAn enzyme called helicase unwinds the double-stranded DNASeveral small proteins called single strand binding proteins (SSB) temporarily bind to each side and keep them separatedAn enzyme complex called DNA polymerase"walks" down the DNA strands and adds new nucleotides to each strand.The nucleotides pair with the complementary nucleotides on the existingstand (A with T, G with C).A subunit of the DNA polymerase proofreads the new DNAAn enzyme called DNA ligase seals up the fragments into one long continuous strandThe new copies automatically wind up again

Related Questions

which of the following is not one of the four nitrogenous bases found in DNA ? A: Adenine B: Guanine C: Uracil D: cytosine
The following scientists made significant contributions to our understanding of the structure and function of DNA. Place the scientists' names in the correct chronological order, starting with the first scientist(s) to make a contribution. I. Avery, McCarty, and MacLeod II. Griffith III. Hershey and Chase IV. Watson and Crick V. Chargaff
If a disease wipes out all of the rabbits how would the loss of the rabbit population affect the population of coyotes ?
One of the three main functions of stems is toA. carry out photosynthesis. B. carry water and nutrients between roots and leaves. C. store carbohydrates. D. store water.
The organelle that is responsible for directing all cellular activities is the:a. mitochondria c. nucleus b. endoplasmic reticulum d. golgi apparatus

Which would least likely be seen on an information pamphlet for red tide? People tend to stay out of the water in the area of a red tide.

People are warned to avoid eating shrimp and lobster.

People are making an effort to protect coastal areas from pollution.

People with respiratory conditions may be affected.

Answers

Answer:

The correct answer would be People are warned to avoid eating shrimp and lobster.  

Red tide refers to the natural phenomenon usually caused by algal bloom.

It can decrease the oxygen levels of the water and releases toxins in the water.

People may experience sneezing, coughing, teary eyes during the period of red tide.

It is advised that people should not visit the beach and they should not go swimming during a red tide, especially those with respiratory conditions.

Seafood like clams, oysters, mussels et cetera is generally safe to eat.

Thus, warning about eating shrimp and lobster is least likely to be seen on an information pamphlet for red tide.
The correct answer is that "People are warned to avoid eating shrimp and lobster." Most likely, the information that is shown in the pamphlet for red tide is that people will be warned to avoid eating shrimps and lobster. They will be more cautious what seafood to eat because we really don't know that only lobster and shrimps are the only ones that are affected with red tide.

Why is gel electrophoresis able to separate strands of DNA

Answers

charges... opposites attracts

What major organic compound can both for muscle tissue and protect the body from antigens

Answers

Answer:

protein.

Explanation:

Muscle fiber is mostly protein. Muscle fibers are made mostly of protein. It's important for you and other animals to eat food with protein, because we cannot make certain amino acids on our own.

Which best defines homeostasis? 1. modifying the external environment
2. maintaining a stable internal environment
3. controlling what enters and exits the cell
4. movement of materials into the cell

Answers

The answer is (2) maintaining a stable internal environment.

Homeostasis is the process by which an organism tries to stabilise the internal body metabolism in response to external disturbances or changes. Example, when a person goes out into the snow, his body process will get overwhelmed by the sudden drop in the temperature. The body will try to stabilise its internal temperature by producing more heat in response to the cold exterior.

Answer:

B. maintaining a stable internal environment

Explanation:

A. DNA transcription is producing messenger RNA.B. DNA transcription is producing ribosomal RNA.

C. DNA translation is producing messenger RNA.

D. DNA translation is producing ribosomal RNA.

Answers

DNA transcription is making is producing messenger RNA. Therefore, option "A" is correct. The procedure by which a cell copies a piece of DNA into RNA. The genetic information a cell needs to make proteins is carried by this copy of RNA, which is called messenger RNA (mRNA).

It moves information from the DNA in the cell's nucleus to the cytoplasm, where proteins are made, via this pathway. DNA transcription can be broken down into three main stages: initiation, elongation, and termination. These means are likewise engaged with DNA replication.

Learn more about transcription, here:

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A; DNA transcription is creating RNA; translation is making proteins. Also, DNA transcription is known to make mRNA

What is the primary purpose of photosynthesis?to capture light energy, convert some of it into chemical energy, and store it in the form of carbohydrates for other life forms to use
to capture light energy and release oxygen into the atmosphere, so that the level of oxygen in the atmosphere increases
to take up carbon dioxide from the atmosphere so that the level of carbon dioxide in the atmosphere is reduced

Answers

The first one is the primary purpose of photosynthesis
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Most of the ATP made during cellular respiration is produced in which organelle?