What type of cells do natural killer cells destroy?
a. antibody marked cells
b. bacteria and virus-infected cells
c. bacteria and cancerous cells
d. cancerous cells and virus-infected cells
e. None of the above
D
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A neuron that has a single process leading away from its soma is structurally classified as __________.
Fill in the blank(s) with the appropriate word(s).
What do the olfactory, optic, and vestibulocochlear nerves have in common?
A. They are all associated with the sense of smell. B. They are all sensory nerves. C. They are all associated with the eye. D. They are all primarily motor nerves. E. They are all mixed nerves.
Which of the following is correct regarding enzymes?
A) They are made of lipids. B) They slow down cellular reactions. C) They are organic catalysts and are made of proteins. D) They bind to the active site of substrates. E) They are released during cellular injury.
Flexion creases are where
A. arrector pili muscles flex skin hairs. B. skin attaches to flexor muscles. C. skin does not have a dermal layer. D. skin attaches to joints of the fingers.