Hydra, a type of cnidarian, have equal survival rates through life because they are equally fit at all stages. Hydra are an example of an organism with a type ______ survivorship curve.
A. 0
B. I
C. II
D. III
E. IV
Answer: C. II
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Which chromosomal pair is associated with Down's syndrome?
a. 34 b. 16 c. 8 d. 2 e. 21
In protostomes, into what does the blastopore develop?
a. mouth b. coelom c. anus d. germ layer
Four of the five statements below are true of cloned DNA. Select the exception
a. The plasmid used is the cloning vector. b. Identical copies are produced. c. Cloned DNA is produced by reverse transcriptase. d. Multiple copies are produced. e. Cloned DNA is manufactured in bacteria cells
Which statement regarding the scientific method is FALSE?
(a). Hypotheses are tentative explanations of observed phenomena. (b). A hypothesis may become a theory, which may become a law. (c). Deductive reasoning is often used in the design of an experiment. (d). A control group is always exposed to the factor being tested. (e). Conclusions are formed after an experiment is conducted.