The cell wall ____.
A. provides physical support for plant cells
B. controls the transport of materials out of the cell
C. replaces the plasma membrane in plant cells
D. is found in all eukaryotes
E. prevents the transport of toxic substances into the plant cells
Answer: A
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A marine fishes kidney plays little role in nitrogenous-waste removal
Indicate whether the statement is true or false.
Which of the following is mismatched?
a. cytokinin – inhibits lateral root formation b. auxin – promotes cell elongation
c. gibberellin – involved in phototropism and gravitropism d. abscisic acid – promotes stomatal closure e. ethylene – promotes leaf abscission
A species is composed of
a. related organisms. b. a group of reproductive females. c. populations that have the potential to interbreed and produce fertile offspring. d. organisms located in the same habitat. e. all males and females in the same geographical range with the same ecological requirements.
DNA and RNA both contain phosphate and ribose
Indicate whether the statement is true or false