When a cell uses substantial energy to organize its cell contents to a greater degree than the organization that exists outside the living cell
A) energy has been created.
B) entropy has increased.
C) entropy has decreased.
D) entropy remains the same.
E) energy has been destroyed.
Answer: C) entropy has decreased.
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Which of the following is NOT related to genetic drift?
A. Founder effect B. Bottleneck effect C. Sexual selection D. Neutral variation E. Non-Darwinian evolution
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.
Various techniques have been developed to isolate strains of bacteria carrying a particular mutation. One of them is, bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing an antibiotic that only kills growing cells. In this environment,
A. wild-type cells die; mutant cells survive. B. wild-type cells survive; mutant cells die. C. both wild-type and mutant cells survive. D. only double mutants survive. E. both wild-type and mutant cells are killed.
DNA technology can be applied to prevent, detect, and treat genetic diseases.
Indicate whether the statement is true or false