The basic function of activated T cells is to battle
A) pathogens in blood or lymph.
B) pathogens in interstitial fluid.
C) pathogens that have already entered body cells.
D) chemical mediators of immunity.
Answer: C
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How does a cell bind with a hormone molecule?
a. It increases its receptor levels. b. Cells circulate through the body looking for hormones to which they can bind. c. Molecules in the cell membrane have a binding site that matches a binding site on the hormone. d. It decreases its receptor levels.
What are characteristics of r-selected populations? (Check all that apply.)
_____ early age of first reproduction _____ late age of first reproduction _____ small brood size _____ large brood size _____ little or no parental care _____ extensive parental care _____ short generation time _____ long generation time _____ type I survivorship curves _____ type III survivorship curves
An individual is said to be ________ if it has two copies of the same factor for a given trait.
Fill in the blank(s) with the appropriate word(s).
The G + C content is a(n) (RNA/structural/genetic) determination used in classifying the different taxa of Gram-positive bacteria
What will be an ideal response?