Explain its normal role and why scientists would regard it as the "guardian of the genome."

1 answer:

5 0

The gene p53, also called the guardian of the genome is located on the 17th chromosome in human genomes.
It was given this alternative name because it has a role in response to damage of DNA molecule and in preventing cancer.
The protein product of this gene stops the replication of damaged DNA, activates proteins that repair the DNA damage and if the reparation proteins fail to fix the damage it activates the process of apoptosis or so-called cell death in order to prevent the damaged cell to proliferate and potentially develop into a tumor.

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If a person develops chronic lymphocytic leukemia, what leukocytes may be involved and how mature are they in the bloodstream? C

Hatshy [7]

Answer:

The correct answer is -

anemia- erythrocytes

easy bleeding- platelets

Repeated infections - leucocytes

enlarged lymph nodes- leucocytes

shortness of breath- erythrocytes

excessive bruising- Platelets

Explanation:

Cancer of the lymphocytes is chronic lymphocytic leukemia (CLL). Lymphocytes are a type of white blood cell involved in the body's immune system.

Platelets are tiny blood cell fragments that help your body form clots to stop bleeding. The platelets then rush to the site of damage and form a plug, or clot, to repair the damage.

Erythrocytes are red blood cells that travel in the blood. They carry oxygen from the lungs to the body and bring carbon dioxide back to the lungs to be expelled.

Leucocytes- White blood cells (also called leukocytes or leucocytes and abbreviated as WBCs) are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.

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In the peptide ala-try-gly-phe, the n-terminal amino acid is

ICE Princess25 [194]

It is alanine. Glad to help ;)

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Why do all microorganisms produce pyruvate via glycolysis?

liraira [26]

Answer:

B) All microorganisms do not produce glucose via glycolysis,

there are alternate pathways that produce glucose.

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How does a light moths variation in color change its probability of surviving in a dark - tree environment over time?

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Due to the moths light color it won't be able to blend in with the darkly colored trees therefore being easily seen by predators.

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Koch's postulates are used to establish the infectious agent that causes a particular infectious disease. In 1937, Thomas Rivers

Sedbober [7]

Answer:

B. The pathogen must be grown in pure culture.

Explanation:

Virus, and also some bacteria can not be cultured in "lifeless media". In the case of bacteria, we refer to the obligate intracellular ones, and all virus. Thus, this postulate can not be fulfilled in all cases. Virus can be propagated on tissue cultures, but certainly this was not considered by Koch. Moreover, these methods often result in spontaneous genetic alterations, which leads to adaptation and even attenuation in animal models of disease, so, the cultured virus perhaps does not induce the same disease when introduced to another specimen.

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