Chromatin is comprised of ________ and ________.
A. phospholipids; DNA
B. DNA; protein
C. DNA; RNA
D. RNA; protein
Answer: B
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What dual functions do the ovaries perform?
a. oogenesis and lactation b. menstruation and ovulation c. oogenesis and secreting female sex hormones d. menstruation and secreting female sex hormones e. oogenesis and gametogenesis
The lymphatic system is composed of all of the following except
A) the appendix. B) the venae cavae. C) the spleen. D) red bone marrow. E) lymph.
Select the correct statement about lymphoid tissue.
A) Once a lymphocyte enters the lymphoid tissue, it resides there permanently. B) Lymphoid macrophages secrete antibodies into the blood. C) Lymphoid tissue is predominantly reticular connective tissue. D) T lymphocytes act by ingesting foreign substances.
What solute maintains the medullary interstitial fluid osmotic gradient?
A) potassium ions B) urea C) sodium ions D) glucose E) water