The figure illustrates
a. repression of the lactose operon.
b. promotion of the lactose operon.
c. formation of a repressor molecule.
d. attachment of lactose to DNA.
e. all of these.
A
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The ____ in mammals allows water to exit but does not allow ions or urea to exit
a. distal convoluted tubule b. Bowman's capsule c. descending segment of the loop of Henle d. proximal convoluted tubule e. ascending segment of the loop of Henle
In animal cells, ____ is/are usually a one-way path
a. replication b. translation c. transcription d. differentiation e. replication and translation
The genes that play a role in the biological clock code for what specific molecules?
a. nucleotides b. tissues c. proteins d. carbohydrates e. DNA
Glomerular filtrate contains many components that need to be reabsorbed (returned to the blood). Which of the following is (are) reabsorbed by osmosis?
A) Urea B) Red blood cells C) Glucose D) Water E) Amino acids