The main form of glucose repression in the lac operon is
A. repression.
B. the CAP/cAMP system.
C. induction.
D. inducer exclusion.
Answer: D
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Which of the following is not one of the four most abundant elements in the body?
a. carbon b. hydrogen c. oxygen d. nitrogen e. calcium
The sex of the fruit fly Drosophila melanogaster is determined as follows: XX chromosomes give a female and XY give a male. The gene for bar eyes is recessive and located on the X chromosome. If a male with normal eyes is mated with a female who has normal eyes but is heterozygous,
A. all of the female offspring will have bar eyes. B. 1/2 the offspring will have bar eyes. C. 1/2 the males will have bar eyes. D. none of the offspring will have bar eyes.
Connective tissue such a tendon and cartilage differs from other solid tissues in that most of its volume is made up of extracellular matrix rather than cells.
a. true b. false
A record of the electrical impulses characteristic of the cardiac conduction system is known as a(n) ________
Fill in the blank(s) with correct word