If guard cell membranes are poisoned with a chemical that inhibit the uptake of k+ , what will happen to the leaf?
a) membranes of leaf tissue dies because of poison.
b) the guard cell will become turgid.
C) the water potential of guard cell become more negative and gain water.
D) leaves cannot transpire because guard cell collapse."
E) the water potential of guard cell become less negative and loose water.
Answer: E) the water potential of guard cell become less negative and loose water.
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You have drained a pond on your property to make it deeper. In the process of using a machine to dig, you find that the mud is black and smells terrible. Your prediction is that ________ bacteria predominate in this area of the mud.
A. nitrogen-fixing B. nitrifying C. sulfur-reducing D. sulfur-oxidizing E. denitrifying
Which structure, A, B, C, or D, returns nearly all nutrients to the interstitial fluid?
1.A
2.B
3.C
4.D
Which is NOT a shared characteristic of
parabasalids and diplomonads? a. heterotrophy b. flagella c. oxygen-poor or anaerobic habitats d. abundant mitochondria e. presence of a pellicle
Organisms that live in an aquatic environment get their carbon from calcium carbonate shells on the bottom, instead of from carbon dioxide in the environment.
Answer the following statement true (T) or false (F)