The attenuated oral poliovirus vaccine (OVP) is no longer administered in the U.S.A. because it

A. is very toxic.
B. does not provide good immunity.
C. can occasionally cause poliomyelitis.
D. can be spread to contacts.
E. can be spread to contacts and can occasionally cause poliomyelitis.


Answer: E

Biology & Microbiology

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The whole-genome shotgun approach for collecting the data used to determine the nucleotide sequence of microbial genomes uses

A. powerful computers and specialized software and automated sequencing of random fragments of genomic DNA. B. automated sequencing of random fragments of genomic DNA. C. powerful computers and specialized software. D. Maxam Gilbert sequencing of cloned restriction fragments.

Biology & Microbiology

Mammals living in cold environments tend to have ____ bodies and ____ appendages than species living in warm

environments.

a. larger; fewer b. larger; longer c. larger; shorter d. smaller; shorter e. smaller; longer

Biology & Microbiology

Which of the following best illustrates the concept of supply and demand in cells?

a. The rate at which food molecules are oxidized by cellular respiration is tightly controlled such that the rate of ATP generation does not match the requirements of the cell for chemical energy. b. The rate at which food molecules are reduced by cellular respiration is tightly controlled such that the rate of ATP generation matches the requirements of the cell for chemical energy. c. The rate at which food molecules are oxidized by cellular respiration is tightly controlled such that the rate of ADP generation matches the requirements of the cell for chemical energy. d. The rate at which food molecules are oxidized by cellular respiration is tightly controlled such that the rate of ATP generation matches the requirements of the cell for chemical energy.

Biology & Microbiology

What is one function of the muscular system?

A. Transmission of electrical signals B. Connection of ligaments to bones C. Heat production D. Exchange of gases with the atmosphere E. Prevention of desiccation

Biology & Microbiology