What is the advantage of a fungal body being composed of numerous thin hyphae instead of one or two very thick hyphae?
A. A greater surface area is available for
absorption of nutrients.
B. Less energy is required to produce the
hyphae.
C. Better support is provided by numerous
hyphae.
D. More exposure to the sun allows for
increased photosynthesis.
E. All the answer options are correct.
A
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Polyarthritis in pigs, sheep, and turkeys may be associated with infection of which of the following bacteria?
A. Listeria monocytogenes B. Erysipelothrix rhusiopathiae C. Bacillus anthracis D. Bacillus porcini
Which of the following describes a trophoblast?
a. the outer layer of blastocyst cells b. a combination of Z and W chromosomes c. the inner layer of blastocyst cells d. a fertilized egg retained in the female
Cancer cells
a. have altered plasma membranes. b. have a lessened ability to attach to other cells. c. divide to produce high densities of cells. d. show an amplified reliance on glycolysis. e. exhibit all of these.
Given the large number of tandem rDNA genes, how is the sequence of each copy prevented from accumulating mutations and becoming nonfunctional?
What will be an ideal response?