An exergonic reaction is considered to be:
a. spontaneous.
b. potentially spontaneous.
c. endergonic.
d. nonspontaneous.
e. energy requiring.
A
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Alternative autotrophic routes to the Calvin cycle such as the reverse citric acid cycle and the hydroxypropionate pathway are unified in their requirement for
A) CO2. B) coenzyme A. C) NAD(P)H. D) organic compound(s) formed.
To date, there are not any indications that transposable elements offer a selective advantage to a species
Indicate whether the statement is true or false
Cilia and flagella of eukaryotic cells are composed of:
A. nine triplets of microtubules in a circle. B. actin filaments in a 9 + 2 arrangement. C. protein fibers in a helical arrangement. D. microtubules in a 9 + 2 arrangement.
In many organelles, groups of different enzymes are located on membranes in close proximity to each other because
a. attaching enzymes to the membrane prevents the cell from losing them to the surrounding environment. b. when enzymes are in close proximity, each one can catalyze more than one type of reaction. c. these enzymes are involved in the same metabolic pathway and keeping them closer together increases the efficiency of the pathway. d. all enzymes must act in groups to position substrates in the proper orientation to produce the product.