Neuroglia are
a. another term for neurons.
b. helper cells that move neurons from place
to place.
c. cells that provide insulation to neurons.
d. chemicals that conduct signals across
synapses.
e. more than one of these
C
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Spring has sprung and so has your garden. Cleaning out the beds in preparation can be tiring but rewarding. The day after doing so, you realize you received an extra reward this year because your skin is covered in itchy, red, swollen blisters. Poison ivy is characterized as which of the following?
a. immediate hypersensitivity b. immunodeficiency c. delayed hypersensitivity d. autoimmune reaction
Four of the five answers listed below are components of the mixture used in Miller and Urey's experiment. Select the exception
a. ammonia b. methane c. water d. hydrogen e. oxygen
Visual pigments are molecules made of
a. protein only. b. carbohydrate only. c. vitamin derivative only. d. steroid only. e. protein and a vitamin derivative
Where are bacterial chromosomes located within the cell?
A) nucleus B) nucleoid C) nucleolus D) cytoplasm E) mitochondria