The primary disadvantage of an osmoregulator strategy is
A. pumping ions into or out of the body is energetically expensive.
B. pumping ions into or out of the body is not a significant energetic expense usually.
C. keeping relatively constant internal conditions deprives the central nervous system of critical information about the environment.
D. pumping water into or out of the body is energetically expensive.
E. physiological systems do not typically perform well under relatively constant conditions.
A. pumping ions into or out of the body is energetically expensive.
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In rabbits, full coat color (c) is the dominant trait. A second allele, chinchilla (cch) is recessive to full coat color. Himalayan coat color (ch) is recessive to chinchilla and full coat colors and albino (c) is recessive to all coat colors
If two chinchilla rabbits mate, what coat color is not possible in their offspring? A. Full coat color B. Chinchilla coat color C. Himalayan coat color D. Albino coat color E. All coat colors are possible
What happens with blood flow at the arteriole end of a capillary?
a. Pressure forces some fluid out of the capillary into the interstitial fluid. b. Pressure forces some fluid into the capillary from the interstitial fluid. c. Osmotic pressure forces fluid out of the capillary into the interstitial fluid. d. There is no fluid movement in either direction. e. Osmotic pressure of the blood is lower than at the venule end.
Genotype means
a. the genes an individual has. b. the number of gametes in an individual. c. the combination of alleles in an individual. d. the observable expression of the genes in an individual. e. the number of chromosomes in an individual.
Self-thinning
A) is found only in populations of mobile organisms. B) occurs at high population densities. C) functions to increase the survival rate of all individuals in the population. D) is a type of scramble competition.