During exposure to elevated glucose, a yeast cell's membrane glucose transporters will rapidly increase so the cell can import glucose. Which would represent the signal for the yeast cell?
A. glucose transporters
B. glucose receptors
C. glucose
D. glucose transport into the cell
E. glucose kinase
C. glucose
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Which of the following would be considered density-independent factors that could affect the growth of a population?
A. predation B. droughts C. parasitism D. resources E. disease
If an individual with a dominant phenotype is crossed with an individual with a recessive phenotype, 4 of their 9 offspring show the recessive phenotype. What is the genotype of the first parent?
A. AA B. aa C. Aa D. The answer cannot be determined from this information.
Gross primary productivity refers to the total
a. quantity of solar energy available to the ecosystem in a given period of time. b. quantity of solar energy reaching a given area of the ecosystem. c. energy trapped initially by the producers. d. energy used by the heterotrophs of the ecosystem in a given period of time. e. energy used by the producers for their growth and reproduction.
How can PCR be used to induce site-specific mutations in DNA?
What will be an ideal response?