What type of geography is typically a "hotbed" for evolutionary pressures?
What will be an ideal response?
biogeography
Biology & Microbiology
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A simple reflex arc is made up of a sensory receptor and
(a) a sensory neuron. (b) a motor neuron. (c) an effector. (d) all of the above.
Biology & Microbiology
______ release the cytokines IL-1 and TNF, which activate _________.
A. Helper T cells, B cells B. Macrophages, complement C. Helper T cells, antigen presenting cells D. Macrophages, helper T cells E. Non-antigenic cells, CD4 cells
Biology & Microbiology
What benefit do muscle cells gain from exercise? a. Increases resistance to fatigue
b. Increases the number of mitochondria within the cells. c. Increases blood flow. d. Promotes healthy bones. e. All are benefits of exercise.
Biology & Microbiology
Bone mass typically increases until the approximate age of ____
a. 10 b. 15 c. 25 d. 35 e. 45
Biology & Microbiology