Sodium concentrations are higher outside and glucose concentrations are higher inside the cell. Using the same membrane protein for Na+ and glucose transport, what is it called when a Na+ electrochemical gradient is used to drive glucose transport into the cell against its concentration gradient?
A. primary active transport
B. secondary active transport
C. primary facilitated diffusion
D. secondary facilitated diffusion
E. passive diffusion
B. secondary active transport
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Which type of reproduction is most commonly found among the fungi?
A. sexual reproduction between two different mating types and production of haploid spores B. sexual reproduction in which two haploid cells fuse, forming a dikaryotic cell whose nuclei fuse (karyogamy) and then produce haploid spores C. asexual reproduction in which the haploid parent forms haploid spores D. asexual reproduction in which the haploid parent produces diploid spores
Detritivores are
a. bacteria. b. plants. c. fungi. d. animals. e. both bacteria and fungi.
Which of the following is considered to be a "clean" energy source?
A. geothermal energy B. burning coal C. nuclear power D. burning natural gas
______ stimulates the interstitial cells of the testes to secrete __
Fill in the blank(s) with the appropriate word(s).