During the Krebs cycle,
a. substrate-level phosphorylation occurs.
b. oxaloacetate is regenerated.
c. electrons and H+ are transferred to
coenzymes NAD+ and FAD.
d. molecules of carbon dioxide are formed.
e. all of these occur
E
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Mating a purebred Labrador retriever to a purebred poodle to produce "Labradoodles" is an example of
A. true-breeding. B. hybridization. C. self-fertilizing. D. inbreeding. E. mixed breeding.
The secondary consumers in this food web is(are) the __________
a. spider b. beetle c. possum d. spider and possum
Osmotic pressure is a measure of the force needed to ________.
Fill in the blank(s) with the appropriate word(s).
Before mRNA can be used in translation (the making of a new protein), nonfunctional segments of the gene that have been transcribed into the strand of pre-mRNA have to be "edited" out. The nonfunctional parts of the gene are cut out (and the functional parts spliced together) by a special type of enzyme. What are these enzymes called?
a) introns b) exons c) genomes d) snRNPs ("snurps") e) polyribosomes