Which of the following are NOT considered to belong to the Archaea?
A) Thermophiles
B) Eubacteria
C) Acidophiles
D) Halophiles
E) Methanogens
Ans: B) Eubacteria
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A genetic trait that helps an organism survive and reproduce in its environment.
A) Ecosystem
B) Informed consent agreement
C) Epidemiologic studies
D) Critical thinking
E) Homeostasis
F) Metabolism
G) Placebo
H) Theory
I) Hypothesis
J) Adaptive trait
Facilitated diffusion is an important method for cells in obtaining necessary molecules and removing other ones. Requirements for facilitated diffusion include
A. The carrier molecule must be specific to the molecule that is transported. The direction of movement is always with the concentration gradient, never against the gradient. B. The carrier molecule is nonspecific to the molecule that is transported. The direction of movement is always with the concentration gradient, never against the gradient. C. The carrier molecule is nonspecific to the molecule that is transported. The direction of movement is always against the concentration gradient, never with the gradient. D. The carrier molecule must be specific to the molecule that is transported and an ATP molecule must be attached to the specific carrier. The direction of movement is always against the concentration gradient, never with the gradient.
Prior to the work of Mendel, inheritance was viewed as resulting from
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.