The process by which organisms maintain a stable internal environment in the face of a fluctuating external environment is called
A. metabolism.
B. cellular respiration.
C. growth and development.
D. homeostasis.
E. functional proteomics and genomics.
D. homeostasis.
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According to Hamilton's rule, _____
A) natural selection does not favor altruistic behavior that causes the death of the altruist B) natural selection favors altruistic acts when the resulting benefit to the beneficiary, corrected for relatedness, exceeds the cost to the altruist C) natural selection is more likely to favor altruistic behavior that benefits an offspring than altruistic behavior that benefits a sibling D) the effects of kin selection are larger than the effects of direct natural selection on individuals E) altruism is always reciprocal
Answer the following statements true (T) or false (F)
1. Bacterial capsules protect bacteria from being phagocytized by leukocytes. 2. A headache is a classic example of a sign of a disease. 3. To cause disease, all bacterial pathogens must first attach to some tissue in the body. 4. Rickettsias and chlamydias are examples of obligate intracellular pathogens. 5. Babesia spp., Ehrlichia spp., and Plasmodium spp. are examples of intraerythrocytic pathogens.
Isopropyl alcohol wiped across a skin site can sterilize it.
Answer the following statement true (T) or false (F)
Most communities have many common species and a few rare species
Indicate whether the statement is true or false