Which of the following cells is a component of the body's first line defense?
A) monocyte
B) goblet cell
C) NK cell
D) neutrophil
E) microglial cells
B
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The concentration gradient that drives diffusion is a form of ____
a. heat b. potential energy c. kinetic energy d. active transport e. osmosis
A nonsense mutation is a base-pair substitution that results in the replacement of one amino acid with
another. __________________ Indicate whether the statement is true or false.
The smooth endoplasmic reticulum is the site of (protein/lipid/carbohydrate) synthesis
What will be an ideal response?
Many of the color varieties of summer squash are determined by several interacting loci: AA or Aa gives white, aaBB or aaBb gives yellow, and aabb produces green. Crosses among heterozygotes give a 12:3:1 ratio. What type of gene interaction would
account for these results? A) multiple alleles B) incomplete dominance C) conditional lethal D) epistasis E) complementation