Carbon can be returned to the atmosphere by all of the following except:a
animal respiration.
b. photosynthesis.
c. combustion.
d. plant respiration.
e. decomposition.
B
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The genus Mycobacterium ________.
A. have cell walls similar to Gram-negative bacteria B. stain acid-fast C. are strict anaerobes and catalase positive and have cell walls similar to Gram-negative bacteria D. are strict anaerobes and catalase positive
The movement of NH4
+ ions into a cell down an electrochemical gradient (where, when compared to the outside of the cell, the inside of the cell has less NH4 + ions) is best described as an example of
a. symport. b. passive diffusion. c. antiport. d. facilitated diffusion. e. active transport.
With exponential growth, ____
a. r is always greater than zero b. growth occurs although r can be zero c. the number of new individuals added increases each generation, and r is stable and less than one d. the number of new individuals added increases each generation, and r is stable and greater than one e. the number of new individuals added increases each generation and r increases
________ are genetic elements that replicate separately from the chromosome
a. Operons b. Plasmids c. Transposons d. Replisomes