Which number identifies a structure that is composed of polysaccharides?

a. 1
b. 3
c. 6
d. 7
e. 9


C

Biology & Microbiology

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Which of the following comparisons of oviparity and viviparity is incorrect?

A. In viviparity, the mother has a lower metabolic investment in her young than in oviparity. B. Viviparity occurs in most mammals; oviparity occurs in birds. C. In viviparity, fertilized eggs are retained within the mother; in oviparity, the fertilized eggs are released into the environment. D. In viviparity, there is parental care; there is no parental care in oviparity. E. In viviparity, the fertilized egg does not need protection from dessication; in oviparity the fertilized egg often needs protection from dessication.

Biology & Microbiology

Which structure delivers a signal from the motor neuron to all the sarcomeres of a muscle cell?

A) myosin filament B) filaments-line C) T tubule D) sarcoplasmic reticulum

Biology & Microbiology

The mechanism of action of the antibiotic vancomycin is

A. inhibition of protein synthesis. B. inhibition of cell wall synthesis. C. inhibition of nucleic acid synthesis. D. inhibition of a metabolic pathway. E. disruption of cytoplasmic membranes.

Biology & Microbiology

Consider a human illness in which individuals that are homozygous for a deleterious recessive allele suffer from a disease with a selection coefficient of s = 0.85. At equilibrium, the nondeleterious allele has a frequency of 0.95

What is the mutation rate from the healthy allele to the deleterious allele? What will be an ideal response?

Biology & Microbiology