Reptiles are adapted to life on land by _____
a. tough skin d. amniote eggs
b. internal fertilization e. both tough skin and good kidneys
c. good kidneys f. all of these
.F
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Roberts Syndrome is an extremely rare genetic disorder that is characterized by mild to severe prenatal retardation or disruption of cell division, leading to malformation of the bones in the skull, face, arms, and legs. Shown below is a pedigree for a family with Robert’s Syndrome. What is the genotype of individual II-C? (R = wild type; r = Robert's syndrome)
A. RR
B. rr
C. Rr
D. R
E. r
Pulsed-field gel electrophoresis (PFGE) is often used to determine whether bacterial isolates from different cases of food-borne illness are the same and can be traced to the same source. This is an example of
A.) an immunologic technique. B.) a genetic method. C.) a phenotypic method. D.) a microscopic technique.
The citric acid cycle produces all of the following except ______.
a) ATP b) acetyl c) FADH2 d) CO2 e) NADH
Which of the following cells attacks virally infected cells and cancer cells?
A) Helper T cell B) Cytotoxic T cell C) Dendritic cell D) B cell E) Macrophage