The organelle that makes steroids in gland cells, regulates calcium in muscle cells, and break down toxins in liver cells is the ___________.
a) lysosomes
b) Golgi bodies
c) smooth ER
d) rough ER
Answer: c) smooth ER
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Consider a rat that has had one bad experience with a poisoned food that caused it to become sick
This rat will now avoid that food due to a behavior known as: a. classical conditioning. b. habituation. c. imprinting. d. insight. e. operant conditioning.
During reabsorption, organic nutrients and ions are moved by diffusion or active transport from the renal tubule into the
A) glomerulus. B) peritubular capillaries. C) glomerular capsule. D) outgoing arteriole. E) incoming arteriole.
In many eudicots, the primary root that enlarges and persists throughout the life of the plant is a
A. stolon. B. rhizome. C. taproot. D. companion root. E. fibrous root.
A treeless region with little rainfall in the far north is the
A. chaparral. B. desert. C. tundra. D. taiga. E. grassland.