Information in living organisms can be transmitted by:
a. genes only.
b. hormones only.
c. neurotransmitters only.
d. genes and hormones but not neurotransmitters.
e. genes, hormones, and neurotransmitters
E
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Which is/are true of coenzymes?
A. They are organic molecules. B. They transfer atoms from one molecule to another. C. They may bind to a number of different enzymes. D. They are synthesized from vitamins. E. All of the choices are correct.
The complementary base that hydrogen bonds with thymine in a DNA double helix is ________
A) uracil B) thymine C) guanine D) adenine E) cytosine
Who introduced the "two-part" system (genus and species) that biologists use to name organisms?
A) Aristotle B) Linnaeus C) Whittaker D) Woese E) Darwin
Answer the following questions true (T) or false (F)
1. Peroxisomes contain enzymes used to digest nutrients that have been brought into the cell through phagocytosis. 2. Bacterial protein synthesis can begin before the reading of the gene is complete. 3. Archaea are similar to bacteria in having cytoplasmic membrane that are composed of phospholipids and hopanoids.