What are the three glands that contribute fluid to semen?
What will be an ideal response?
Seminal vesicles, prostate, and bulbourethral glands
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A typical root pumps out H+ to maintain a strong membrane potential of about
A. -12 V. B. 120 V. C. 60 Hz. D. -160 mV. E. pH 5.0.
Which of the following occurs after a calcium-rich meal?
A) Parathyroid hormone stimulates the activities of osteoblasts and removes calcium from the blood. B) Calcitonin removes calcium from the blood and stimulates the activities of osteoclasts. C) Parathyroid hormone is released by the thyroid gland to inhibit the activities of osteoclasts. D) Calcitonin stimulates the activities of osteoblasts and removes calcium from the blood.
Which process not only yields electrons during photosystem I and II, but also is the source of almost all the oxygen in
Earth’s atmosphere? a. glycolysis b. photolysis c. Calvin cycle d. CAM pathway e. noncyclic electron transport
Which one of the following does not apply to proteins?
A. The sequence of amino acids determines the identity of the protein. B. Some proteins have a transport function. C. Proteins are polymers of amino acids. D. Proteins can be enzymes. E. The main function of protein is energy storage.