In ________, ribosomes can attach to the mRNA and begin translation even though transcription has not been completed.
A. fungi
B. prokaryotes
C. protozoa and some plants
D. eukaryotes
Answer: B
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Which of the following statements best describes the differences between snakes and lizards?
A. All snakes lack eyelids and all lizards have eyelids. B. All snakes lack external ear openings and all lizards have external ear openings. C. Some snakes are venomous and no lizards are. D. All snakes lack limbs but all lizards have limbs. E. None of the other choices are foolproof and combinations of characteristics are sometimes necessary to distinguish lizards and snakes.
The greater fitness seen in species that reproduce sexually can be contributed to what?
a. Sexually reproducing species are typically born into stable environments so have greater fitness. b. Fewer offspring are born, so more care can be given to each offspring. c. Genetic diversity is created through sexual reproduction. d. Sexual reproduction has greater energy requirements. n
In a scientific experiment, a group of organisms or samples that do not receive the experimental treatment but are otherwise identical to the group that does is also known as:
A. A control group B. A treatment group C. A test group D. An experimental group
Viruses may be grown:
A) in an incubator B ) in pure cultures in the lab C) on chemical growth media D) in darkness or in light E) only in living cells