If the DNA contained in the chromosomes of an organism is similar to an instruction manual, then what are the genes "instructing" the cell to do?
A) grow in size until a certain point is reached, then reproduce itself
B) convert carbohydrates into enzymes
C) change shape and structure to meet the demands of the local environment
D) synthesize specific proteins from amino acids
D
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Haptens CANNOT bind to or induce an immune response but CAN bind to antibodies
Indicate whether the statement is true or false.
Although symbiotic relationships between nitrogen-fixing bacteria and plants are rare, many plants have symbiotic relationships with
A. soil insects. B. nematode worms in the soil. C. other plants. D. filamentous algae. E. mycorrhizal fungi in the soil.
Cleft palate is ____
a. controlled only by genetics b. a continuously distributed trait c. controlled by a single gene pair d. only transmitted from father to son e. explained by the threshold model of complex t
Eutrophication
A. occurs when there are excess nutrients in aquatic ecosystems. B. can block the O2 supply to the lake. C. causes massive die-off of fish and invertebrates. D. encourages heavy surface algal blooms. E. All of the choices are correct.