Which of the following are characteristics of ribozymes? Select one or more that apply
A. cleavage of phosphodiester bonds
B. loss of activity at higher temperatures
C. self-splicing
D. removal of nucleotides from precursor RNAs
E. found in eukaryotes, not bacteria
A, B, C, D
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The light-independent reactions of plants function to make organic molecules using carbon dioxide as a carbon source. What is the electron source that helps reduce carbon dioxide to sugars and other organic molecules?
A) NADH B) NADPH C) ATP D) electrons from oxygen
The Karen Ann quinlan case is an example of
a. withholding treatment b. active euthanasia c. withdrawing treatment d. physician-assisted suicide e. b and d.
Which plant hormone will cause the stomata to close?
a. Ethylene b. Auxins c. Cytokinins d. Abscisic acid e. Gibberellins
Facilitated transport requires the use of ATP.
a. true b. false