A virion consists of all but the following:

a. Capsomeres
b. Nucleic acids
c. Ribosomes
d. In some viruses a viral envelope
e. Capsid


Ans: c. Ribosomes

Biology & Microbiology

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Resting potential arises from the distribution of charged ____ and small ions inside and outside of a neuron

a. pumps b. channels c. organelles d. proteins e. membranes

Biology & Microbiology

The genetic code demonstrates the universality of living things because it is common to virtually all:a

eukaryotes. b. autotrophs. c. plants and animals. d. bacteria. e. organisms

Biology & Microbiology

When migrating cells move toward a greater concentration of a diffusible chemical, the chemical is called a ________

Fill in the blank with correct word.

Biology & Microbiology

The immunological synapse refers to the

A) interaction between a T cell and an antigen-presenting cell to produce a specialized cell-to-cell contact area. B) activation of a B cell to become a plasma cell. C) interaction between lymphocytes and foreign antigens to produce memory cells. D) binding of a monocyte or macrophage to antigen so that it can act as an antigen-presenting cell. E) interaction of the many cytokines produced by different immunological cells.

Biology & Microbiology