What metric unit would be most appropriate for expressing the size of most viruses?

a. Nanometer
b. Millimeter
c. Micrometer
d. Centimeter


Ans: a. Nanometer

Biology & Microbiology

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Which of the following is a characteristic of larval echinoderms?

A) bilateral symmetry B) spiral cleavage C) gastrovascular cavity D) exoskeleton E) lophophore

Biology & Microbiology

Four of the five answers listed below are true of a neuron at resting potential. Select the exception

a. The interior of a neuron is positive. b. The interior of a neuron has a negative charge. c. There are more sodium ions outside a neuron. d. There are more potassium ions inside a neuron. e. The membrane of a neuron is polarized.

Biology & Microbiology

These enzymes have the ability to cut DNA at places where specific sequences of nucleotides occur. 

A. restriction B. ligases C. helicases D. polymerases

Biology & Microbiology

During inflammation, as edema increases, more pressure is exerted on nerve endings, leading to increased:

a. pain b. loss of function c. redness d. heat

Biology & Microbiology