Which of the following characteristics is rare among protists?
A. Eukaryotic
B. Motility
C. Multicellular
D. None of these characteristics are rare among protists.
Answer: C
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Evolutionary change
A. occurs through the modification of characteristics in a preexisting population. B. may involve vertical descent with mutation. C. may involve horizontal gene transfer. D. All of these choices are correct. E. None of these choices are correct.
Which of the following statements about the graph is true?
A. Oysters live longer than Hydra.
B. Hydra and humans have parallel life spans.
C. Humans and oysters have similar life spans.
D. Humans have low mortality rates early in life.
E. Oysters have high mortality rates late in life.
Clarify question:
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content:
What do you already know about the characteristics of the three survivorship curves? What other information is related to the question?
Choose Answer:
Given what you now know, what information is most likely to produce the correct answer?
Reflection 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?
The appearance of __________ marks the onset of
gastrulation in humans. a. a notochord b. the primitive streak c. mesoderm d. neural folds e. somites
The anterior pituitary gland secretes ________. In men, this hormone causes the cells that will become sperm to be more sensitive to the effects of testosterone
Fill in the blank(s) with correct word