A housefly can transmit diseases as a (biological/fomite/mechanical) vector
What will be an ideal response?
mechanical
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The genome of viruses consists of:
A. double-stranded DNA. B. single-stranded DNA. C. double-stranded RNA. D. single-stranded RNA. E. Viruses genomes can contain any of the nucleic acids listed.
Retinoblastoma occurs only in one eye in patients at a low risk of developing other cancers when the
____________________ form is present. Fill in the blank(s) with the appropriate word(s).
Prions are created when normal proteins in the body ____
a. combine with large ribosomal subunit and become infectious
b. exchange several long sections of amino acids with other infected proteins c. refold into a different and infectious three-dimensional shape that kills cells in the brain and nervous system d. undergo mutation and create hundreds of copies of themselves e. invade the immune system, causing it to mistakenly destroy the body’s healthy tissue
According to a variety of gene data, which hypothesis is correct?
A. the Multiregional Hypothesis B. the Recently-Out-of-Africa Model C. Both the choices are correct. D. Neither choice is correct.