The smallest unit of life that can exist as a separate entity is a(n) ___________.
A. cell
B. molecule
C. organ
D. population
E. ecosystem
Answer: A
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A group of population members all of the same age is called a ________.
A. deme B. species C. cohort D. tribe
Refer to Figure 49-1. Insulin-like growth factor would be included with which of the following pairs?
a. 1, 2 b. 3, 4 c. 6, 9 d. 7, 8 e. 10, 11
What type(s) of microbial interactions take place in a microhabitat?
A. antagonism B. cooperation C. competition D. antagonism and competition E. a combination of antagonism, cooperation, and competition
If the decolorizer is left on too long in the Gram-staining procedure, Gram-positive organisms will be stained ________ and Gram-negative organisms will be stained ________.
A. purple; pink B. purple; blue C. purple; colorless D. pink; pink