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.
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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
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
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).
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%