Chemical tags called ____ can be added directly to DNA to switch genes off
a. histones
b. telomeres
c. oncogenes
d. methyl groups
e. genomes
The answer is d. methyl groups
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The entrance of a microbe into an individual's vascular space has initiated opsonization. How will the health care provider explain this process critical in stopping the infiltration of the microbe through opsonization? Opsonization:
A) Stimulates B cells by helper T cells B) Coats a microbe to activate phagocytosis recognition C) Releases proteins that stimulate cell production by the bone marrow D) Involves lysis of intracellular microbes by cytotoxic T cells
Serum is identical to plasma except it does not contain which of the following substances?
A. Albumin B. Clotting proteins C. Globulin D. Waste products E. Hormones
Which of the following terms means characteristic of old age?
A. Senile B. longevity C. Aging D. Geriatrics E. Senescence
Eating foods high in cholesterol and fats can cause a collection of fatty plaque in arteries. This condition is known as:
a. aphasia b. arteriosclerosis or atherosclerosis c. arthritis d. atelectasis e. aura