Human tapeworm infections occur by

A. ingesting eggs in contaminated water.
B. eating insufficiently cooked infected pork or beef.
C. eating freshly peeled fruit.
D. being bitten by a mosquito.
E. All of the choices are correct.


Answer: B

Biology & Microbiology

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A driver gene ____

a. contains a driver mutation that does not affect gene expression b. does not have any effect on cancer progression c. contains a driver mutation that causes apoptosis in normal cells d. contains a driver mutation or is expressed abnormally, conferring a growth advantage to the cell e. is the unmutated form of a proto-oncogene

Biology & Microbiology

The enzyme complexes associated with oxidative phosphorylation and the electron transport chain can be classified as ________ proteins.

A) integral membrane B) peripheral membrane C) lipid-anchored membrane D) water-soluble E) Both A and C

Biology & Microbiology

Morgan's student Sturtevant demonstrated that the recombination frequencies between a series of linked genes is additive. Examine the following recombination data from Sturtevant, and determine the proper order of the genes on the Drosophila X chromosome. Assume y is in the 0.0 position.Gene 1                Gene 2               Recombination frequencyyellow(y)            vermilion(y)           0.322vermilion           miniature(m)           0.030white(w)            vermiliom                0.297yellow                white                      0.010white                 miniature                0.337 

A. y w v m B. y m v w C. y w m v D. y m w v

Biology & Microbiology

Which of the following observations provides the strongest evidence that fever evolved as an adaptive re-sponse to infections?

a. Direct manipulation of body temperature in animal models shows that suppressing fever leads to a faster spread of infections. b. Treating infected experimental animals fever-suppressing medicine leads to a faster spread of infections. c. Infections in lizards induce behavioral fever. d. Fever accompanies many infections.

Biology & Microbiology