What is the main force by which most of the water within xylem vessels moves toward the top of a tree?

A) active transport of ions into the stele
B) evaporation of water through stoma
C) the force of root pressure
D) osmosis in the root


B

Biology & Microbiology

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Choose the statement that does not accurately characterize associative learning

A. pairing a stimulus that leads to a specific behavior with a neutral stimulus that initially had nothing to do with the specific behavior B. a form of conditioning in which two stimuli are paired C. linking or associating a behavior with a reward D. learning that occurs in the absence of reward or punishment E. operant conditioning

Biology & Microbiology

Obligate intracellular parasites may be grown in special synthetic media

Indicate whether this statement is true or false.

Biology & Microbiology

Which of the following is a shared component of plant and animal cells?

a. ribosomes b. chloroplasts c. centrioles d. cell wall

Biology & Microbiology

Which type of neuron contains one axon and multiple dendrites?

a. unipolar b. pseudounipolar c. multipolar d. bipolar

Biology & Microbiology