To estimate the total concentration of a beneficial bacterial species in yogurt, ________ would provide the quickest results

A) fluorescence in situ hybridization
B) qPCR
C) RT-PCR
D) a Southern blot


Answer: B

Biology & Microbiology

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In conjugation the donor cell is recognized by the presence of

A. an F plasmid. B. a Y chromosome. C. diploid chromosomes. D. an SOS response. E. an F plasmid AND diploid chromosomes.

Biology & Microbiology

You decide to volunteer at a community garden and are assigned to tend six equally sized vegetable beds. Three of the beds contain only tomato plants, while the other three contain tomatoes as well as snow peas, bell peppers, cucumbers, okra, and broccoli. You work hard all summer and fall, tending the plants through insect attacks, diseases, and severe summer storms. You harvest vegetables every three days and start to notice a pattern. The mixed vegetable plots consistently produce 4 pecks (a unit of dry goods measurement) each at every harvest, while the tomato only plots produce between 1-6 pecks each at every harvest. The garden director notices the pattern as well, and knowing you are a biology student, she asks you for an explanation.

What concept or hypothesis do you cite in your response? A. The model of island biogeography B. The diversity-stability hypothesis C. The tolerance model D. The intermediate disturbance hypothesis E. The productivity hypothesis

Biology & Microbiology

Suppose that in studies of genes on the same chromosome you find the following recombination

frequencies: ©2014 Brooks/Cole, Cengage Learning Why do the distances between a-c and c-b not add up to the distance between a-b?

a. a and b are not linked b. the distances were calculated incorrectly c. b is in between the a and c genes d. double crossovers between a-b decrease recombinants e. all three genes encode the same trait

Biology & Microbiology

An organism used to make a variety of industrial enzymes by fermentation is ________.

A. Penicillium B. Salmonella C. Aspergillus D. E. coli

Biology & Microbiology