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
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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
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
When migrating cells move toward a greater concentration of a diffusible chemical, the chemical is called a ________
Fill in the blank with correct word.
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.