One theory holds that complex molecules formed on clay. This is because clay attracts
a. oxygen.
b. lipids.
c. nucleic acids.
d. amino acids.
e. carbon.
D
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Organisms that live optimally in cold temperatures are called barophiles
Indicate whether the statement is true or false.
Segments of DNA that contain instructions for making either proteins or RNA molecules that regulate proteins are called ________.
A. expressed factors B. chromatin C. traits D. genes
What would happen if you were to increase the temperature in an enzyme-catalyzed reaction?
a. The rate of reaction will not change. b. The rate of reaction will increase and then level off. c. The rate of reaction will decrease and then level off. d. The rate of reaction will increase and then decrease rapidly. e. The rate of reaction will decrease and then increase rapidly.
If a cell wall is analogous to the plant cell, which of the following is analogous to the animal cell?
a. the cytoskeleton b. the capsule c. the plasma membrane d. the extracellular matrix