Enzymes belong to which group of organic molecules?
A. carbohydrates
B. lipids
C. nucleic acids
D. proteins
D. proteins
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Resolving power
(a) is the amount that an object’s image is enlarged. (b) is the extent to which detail in an image is preserved during the magnifying process. (c) is the degree to which image details stand out against their background. (d) focuses light rays emanating from an object to produce an image.
What adaptation do alcids have to aid in successful reproduction? a. The males rest eggs on their feet
b. They have a pear shaped egg. c. They lay a single egg at a time. d. They lay eggs in protected areas on the beach.
Sickle-cell anemia is a genetic disease caused by the presence of a faulty hemoglobin gene (HbS). The normal version of this gene is HbA. Which of the following is TRUE about HbS and HbA?
a) It is impossible for a person to carry two HbS genes. b) Hemoglobin genes are always inherited from one's mother. c) People carrying two HbS genes smell like rotten fish. d) They're both alleles for the same trait. e) A person with two HbS genes would be a silent carrier.
Portion of Figure 21.11
?
Refer to the accompanying figure for questions 26-28.
The kelp shown in the accompanying figure represents the ____ stage in its life cycle.
A. spore-bearing B. gamete-forming C. haploid D. motile E. feeding