In which part of a sponge's body does fertilization occur?

A. the ostium
B. the mesohyl
C. the spicule
D. the spongin
E. the amoebocyte


B. the mesohyl

Biology & Microbiology

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Functionally speaking, a nerve impulse is

a. a flow of electrons along the outside of the plasma membrane of a neuron. b. the movement of cytoplasmic elements through the core of the neuron. c. a series of changes in membrane potential. d. a lengthening and shortening of the membrane extensions of a neuron. e. a turning on and off of the sodium-potassium pumps of a neuron.

Biology & Microbiology

The synthesis of an RNA molecule from a DNA template strand is called

a. replication. b. translation. c. transcription. d. DNA synthesis. e. metabolism.

Biology & Microbiology

If you were to view Staphylococcus, you would expect to see clusters of round cells.

a. true b. false

Biology & Microbiology

Which of the following is not a characteristic of an endotoxin?

A. Neurotoxic B. Heat stable C. Moderate toxicity D. Weakly immunogenic

Biology & Microbiology