What conclusion was based on experiments with "maze-bright" and "maze-dull" rats?
A) An enriched environment increases maze-running ability only in dull rats.
B) A poor environment adversely affects maze-running ability in both bright and dull rats.
C) Maze-running ability is highly heritable and unaffected by environment.
D) Maze-running ability is based entirely on environment and unaffected by genes.
B
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Antidiuretic hormone:
a. promotes processes that lead to an increase in the volume of urine b. makes the distal tubule and collecting ducts more permeable to water c. acts on the proximal tubules of nephrons in the kidney d. is produced by the adrenal cortex e. changes the water permeability of the ascending limb of the loop of Henle
The chromosomes are aligned midway between spindle poles during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
You are looking at a tissue under a microscope. You see mostly densely packed fibers with some cells scattered throughout. You would predict that the function of this tissue is to
A) attach bones to muscles or other bones. B) connect epithelia to underlying tissues. C) conduct electrical impulses. D) produce voluntary movements of the body.
Which brain structure is associated with muscle atonia?
-the pons -the cerebellum -the amygdala -all of the above (as all are part of the hindbrain)