In the Calvin cycle, carbon dioxide molecules are reduced by the addition of electrons carried from the light reactions by

A. NADP+.
B. oxygen.
C. NADPH.
D. ATP.
E. water.


C. NADPH.

Biology & Microbiology

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What structures solve the end replication problem for linear chromosomes?

A. telomerases B. centromeres C. origins of replication D. telomeres E. euchromatin

Biology & Microbiology

Bile is ____

a. an enzyme that digests fat b. made in the gallbladder c. stored in the liver d. a mix of salts, pigments, and cholesterol e. necessary for protein digestion

Biology & Microbiology

In disruptive selection, over time

A. the population is strongly selected for in one direction (e.g., larger beak size). B. a population increases its variation (e.g., a wide selection of all beak sizes). C. a population goes extinct. D. the population is strongly selected for in two directions (e.g., larger beak size and smaller beak size). E. the most extreme outliers of a population are eliminated (e.g., the largest beaks and smallest beaks are eliminated).

Biology & Microbiology

What would be the frequency of pink flowers in a population where the allele frequency of CR is 0.4 and the population is in Hardy-Weinberg equilibrium? Assume that CR CR is red, CRCW is pink, and CwCw is white.

A. 0.16 or 16% B. 0.2 or 20% C. 0.8 or 80% D. 0.04 or 4% E. 0.48 or 48%

Biology & Microbiology