Which of the following organs of the endocrine system secretes melatonin?

a. pituitary gland
b. pancreas
c. pineal gland
d. adrenal glands
e. thyroid gland


C

Biology & Microbiology

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The cause of malaria is a ____

a. Pseudomonas b. Phytophthora c. Plasmodium d. Physarum e. Phytophthora

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Simple sugars are linked together to form polysaccharides by

1.hydrolysis reactions. 2.condensation reactions. 3.ionic bonds. 4.hydroxyl groups.

Biology & Microbiology

Actin is a structural subunit of

a. myosin. b. microtubules. c. intermediate filaments. d. microfilaments. e. all of these.

Biology & Microbiology

________ wrap aroung neurons in the preiheral nervous system, covering them with layers of plasma membrane.

A. Schwann cells B. oligodendrocytes C. microglia D. astrocytes

Biology & Microbiology