The oldest known plant is at least ___ years
old
a. 430
b. 4,300
c. 43,000
d. 430,000
e. 4,300,000
C
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Two parents who do not have sickle cell anemia have a child that has the disease. The parents are both:
A. homozygous for the sickle cell allele. B. heterozygous for the sickle cell allele. C. homozygous for the normal allele. D. epistatic for the sickle cell allele. E. pleiotropic for the sickle cell allele. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about sickle cell anemia? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following does (or did) not lay an amniotic (enclosed) egg?
a. birds b. monotreme mammals c. dinosaurs d. frogs e. snakes
Which of the following plants is NOT a
gymnosperm? a. cycad b. conifer c. palm d. ginkgo e. gnetophyte
A protein's shape and chemical behavior are determined by ________
A) the cell's age B) the environment of an organism C) its linear sequence of amino acids D) the type of cell in which it resides E) the cholesterol makeup of the lipid membrane