How are prions different from all other known infectious agents?

A. they cannot reproduce outside a cell.
B. they act as slow viruses.
C. they cause neurological problems.
D. they can be destroyed by incineration.
E. they lack nucleic acid.


Answer: E

Biology & Microbiology

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Inbreeding depression, the reduction in fitness of inbred organisms, often results from the reduced level of what (within the gene pool)?

What will be an ideal response?

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If an egg cell contained EDTA, a chemical that binds calcium and magnesium, what effect would this have on reproduction?

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Jess has A- blood type, has never received a blood transfusion, and never been pregnant. Antibodies against what blood antigens could be present in Jess' blood?

A) O and Rh antigens B) B antigens C) A antigens D) B and Rh antigens E) O antigens

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