Insulin stimulates cells to take in glucose by facillitated diffusion, so insulin receptor-down regulation
increases the ability of cells to take in glucose.
__________________ Indicate whether the statement is true or false.
F, decreases
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Silica walls are characteristic of
A. diatoms. B. slime molds. C. euglenoids. D. red algae. E. brown algae.
The requirement of cold weather before a particular plant process occurs (e.g., germination) is known as ____
a. the biological clock b. vernalization c. photoperiodism d. biennial life cycle e. perennial life cycle
If two genes have a lod score of 1.2, this indicates that they are most likely_____
a. disease causing genesb. linked on an autosome c. X-linked d. on separate chromosomes e. in separate genomes
Figure 21.22
The structure labeled A is the __________.
A. gametophyte B. sporophyte C. sporangium D. plant stage E. zygote