Which statement is true?
a. Mitochondria are primarily sites where anaerobic respiration occurs.
b. Vaults are inclusions in the cytoplasm that transport DNA.
c. Peroxisomes are membranous sacs that contain hydrolytic enzymes.
d. Ribosomes are membranous organelles that synthesize proteins.
e. None of the statements are true.
E
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The outermost layer of connective tissue surrounding a skeletal muscle is the
A. perimysium. B. epimysium. C. sarcomysium. D. endomysium.
Answer the following statements true (T) or false (F)
1. The prostate atrophies as a man ages, and it usually causes no health problems. 2. The hormone oxytocin combines with enzymes in semen to enhance sperm motility. 3. When a couple is having difficulty conceiving a child, it is necessary to investigate the sperm of the male. 4. The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone. 5. Ovarian follicles contain mature eggs.
What is the most common cause of prolonged vasoconstriction in the kidney?
A. Ischemia from decreased blood flow B. Hormonal mechanisms to increase blood pressure C. Release of antidiuretic hormone D. Nephropathy from diabetes mellitus
The hematocrit is
a. the packed hemocytes found in hemolymph. b. the packed red blood cells only. c. the packed white blood cells only. d. the total packed cell volume of blood. e. the total volume of oxygen carried in the blood.