Sperm cells get energy to power their movement from ________, which is contributed by the ________
A) sucrose; bulbourethral gland
B) seminogelin; prostate gland
C) fructose; seminal vesicles
D) prostaglandins; prostate gland
E) semen; seminiferous gland
C
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The type of organic molecule that can replicate is a
A. nucleic acid. B. lipid. C. protein. D. carbohydrate.
Information coming into the central nervous system is transmitted along ________ neurons.
A) sensory and efferent B) sensory C) afferent D) afferent and sensory E) efferent
Following are events that occur during the cardiac cycle. 1. Ventricular pressure increases and exceeds pressure in the arteries. 2. Ventricles fill passively. 3. Atrial relaxation begins. 4. Atrial contraction forces a small amount of additional blood into relaxed ventricles. 5. Pressure in ventricles drops and blood flows back against cusps of semilunar valves, forcing them closed. 6. Ventricular contraction pushes AV valves closed. Choose the correct order of events in the cardiac cycle.
A) 4, 6, 3, 1, 2, 5 B) 2, 6, 1, 4, 3, 5 C) 3, 6, 1, 5, 4, 2 D) 2, 5, 1, 6, 3, 4 E) 4, 3, 6, 1, 5, 2
The most common lipids in the body are
A. glycoproteins, and they are used as backbones for cell membranes. B. triglycerides, and they are used for energy storage in adipose. C. eicosanoids, and they are used as hormonal messengers. D. phospholipids, and they are used as key ingredients of bile salts. E. steroids, and they are used as signaling molecules in inflammatory responses.