Which of the following is NOT an effect observed in the guard cells of stomata?
A) Guard cell shrinkage
B) K+ exits guard cells
C) Changes in membrane potential
D) cell expansion driven by proton ATPases
E) water exits guard cells
Answer: D
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The classic experiments performed by Creighton and McClintock in Maize
A. provided the initial evidence for genetic recombination. B. provided evidence that genes located on the same chromosome do not assort independently. C. allowed for the establishment of the first genetic map. D. provided evidence for the physical exchange of genetic material between homologues.
Amphipathic organic molecules that serve as disinfectants by disrupting membranes and denaturing proteins are called ________.
A. sterilants B. soaps C. detergents D. oxidants
The division of the cytoplasm during cell division is referred to as:
A) cytokinesis. B) binary fission. C) Gap 1. D) replication. E) Gap 2.
A microorganism found living under conditions of high ________ is a barophile.
A. pH values B. oxygen concentrations C. hydrostatic pressure D. carbon dioxide levels E. salt concentrations