Which process will break apart a large substance into smaller molecules?
a. Metabolism
b. Hydrolysis
c. Development
d. Condensation
e. Reproduction
b
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Which of the following does NOT happen when the
body has excess sodium? a. More sodium is excreted. b. More sodium is reabsorbed. c. Edema occurs. d. Blood pressure rises. e. Aldosterone secretion is inhibited.
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secreted by the thyroid gland and sets into motion responses to lower the blood calcium back to the set point
If the blood calcium level falls below a set point, the parathyroid gland secretes parathyroid hormone that sets into motion responses to raise the blood calcium. These homeostatic responses are examples of A) positive feedback. B) effectors. C) sensors. D) negative feedback.
Animals gather information using specialized cells called
a) blastula b) nodes c) stimuli d) receptors
Which of the following tends to be more complex in a parasitic helminth than in free-living helminths?
A) digestive system B) nervous system C) reproductive system D) digestive and nervous systems E) digestive, reproductive, and nervous systems