The poly(A) tail of an mRNA
a. is where the start codon is located.
b. covers the stop codon until it is needed.
c. protects the mRNA from attack by RNA-digesting enzymes.
d. is where ribosomes attach at the start of translation.
e. is where the process of translation ends.
C
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What would you expect to observe in a species with a promiscuous mating system?
A. Intrasexual selection is very strong, with larger females. B. Intrasexual selection is very strong, with larger males. C. A female mates with a different male in every breeding season. D. Males remain with females to help raise young. E. Females interfere with any attempts by males to mate with other females.
________ can usually repair DNA damage caused by ultraviolet light.
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What are bacteriophages?
a. a hybrid between a virus and a bacterium b. viruses that set in as secondary infections after bacteria c. a classification of viruses that are infected by bacteria d. a classification of viruses that only infect bacteria
Which is a basic assumption made by scientists?
A. There are specific causes for naturally occurring events observed in the natural world. B. The causes for events in nature cannot be identified. C. There is one general rule or principle that can be used to describe all of nature. D. An event that occurs only once can be studied using the scientific method.