A red blood cell was placed in a beaker of solution. The cell immediately began to swell and
ultimately burst. This happened because the cytoplasm of the cell was ____ to the solution in the
beaker which was ____.
a. hypertonic; hypotonic
b. hypotonic; hypertonic
c. hypotonic; isotonic
d. hypertonic; isotonic
e. isotonic; hypotonic
A
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Which of the following is not true concerning a population in equilibrium according to the Hardy-Weinberg rule?
A. There is no migration into or out of the population B. Individuals of the population mate randomly C. The population size is very large D. Selection is favoring the dominant allele E. There is no mutation in the populations
Mosquitoes serve as vectors in all of the following viral diseases, except:
A) dengue fever. B) hepatitis. C) West Nile virus disease. D) yellow fever.
Through a sequence similarity search, a researcher identifies a gene whose predicted protein product has a putative
function of a photosynthesis-enhancing enzyme. Which experimental method could be performed to verify this function?
a. PCR b. an assay measuring photosynthetic productivity c. identification of signature genes d. DNA microarray e. gene knockout
Determining the effects of natural selection on human behavior is much more robust if ________
A) one disentangles the effects of culture from evolutionary history in detailed, controlled studies of a single culture B) groups of humans are separated into control and treatment groups for extensive experimentation C) data is collected cross-culturally to eliminate the effects of culture on behavior D) We cannot study human behavior in an evolutionary context.