What happens first following a neuron stimulation?
a. Sodium ions enter the cell.
b. Sodium ions leave the cell.
c. Potassium ions enter the cell.
d. Potassium ions leave the cell.
e. Potassium ions are involved in positive
feedback.
Answer: a
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Which of the following terms is used to describe organisms, particularly plants and fungi, that have distinct haploid and diploid phases of their life cycle?
A) polypoloidy B) aneuploidy C) alternation of generations D) asexual propogation E) both choices B and C are correct.
Mammalian skin has both sebaceous and sudoriferous glands; theses glands respectively secrete what substances?
a. sebum, milk b. sebum, sweat c. sweat, sebum d. milk, sebum
How do sponges transport nutrients within their bodies?
A) They have simple digestive and circulatory systems composed of spongin. B) They rely on diffusion to move nutrients between their cells. C) Their mobile amoebocytes transport food molecules from cell to cell. D) They are not able to transport nutrients within their bodies but must independently absorb all necessary nutrients from the surrounding water.
A microorganism that is not motile and has stopped metabolizing could be considered dead.
Answer the following statement true (T) or false (F)