How does aging affect the endocrine system?
A. Endocrine system imbalances can lead to weight gain or muscle loss.
B. Aging reduces the efficiency of endocrine system functions.
C. Secretory activity of endocrine glands decreases.
D. Normal levels of hormones, particularly growth hormone and sex hormones, often decrease.
E. All of the choices are correct.
Answer: E
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Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle cell and thereby initiates the steps of contraction?
A. Norepinephrine B. Acetylcholinesterase C. Serotonin D. Acetylcholine
Which of the following factors is most influential in acquiring declarative knowledge?
A. psychomotor ability B. perceptual speed C. g D. spatial ability
Why should a student use the SQ3R method?
A) The SQ3R method provides a student with a strategy for taking notes during lecture class. B) The SQ3R method provides a student with ways to improve time management skills. C) The SQ3R method provides a student with a strategy for improving test taking skills. D) The SQ3R method provides a plan for a student to improve textbook reading skills.
Beta-globulins transport ________, whereas gamma-globulins are ________.
A. antibodies; lipids B. lipids; heavy metals C. iron ions; antibodies D. oxygen; clotting proteins E. clotting factors; hormones