When a DNA molecule containing a wrong base at one location in one strand is replicated:a
the mutation is corrected by the DNA polymerase enzyme.
b. the mutation is ignored by the DNA polymerase enzyme.
c. the mutation is copied into one of the two daughter molecules.
d. the mutation is copied into both of the daughter molecules.
e. the replication is stopped.
C
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Humans become infected with the malarial parasite when mosquitoes inject ________ into the bloodstream.
A. sporozoites B. schizonts C. merozoites D. trophozoites
Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal?
A) Sodium and glucose compete for the same binding site in the cotransporter. B) Glucose entering the cell down its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient. C) Sodium ions can move down their electrochemical gradient through the cotransporter whether or not glucose is present outside the cell. D) The cotransporter can also transport potassium ions. E) A substance that blocks sodium ions from binding to the cotransport protein will also block the transport of glucose.
Syntrophic organisms cannot grow fermentatively without a hydrogen-consuming partner organism
Indicate whether the statement is true or false.
Starting with one molecule of glucose, the energy-containing products of glycolysis are _____
A) 2 NAD+, 2 pyruvate, and 2 ATP B) 2 NADH, 2 pyruvate, and 2 ATP C) 2 FADH2, 2 pyruvate, and 4 ATP D) 6 CO2, 2 pyruvate, and 2 ATP