Why are corneal transplants so successful?
a. Corneas of all individuals tend to display the same MHC antigens.
b. The corneas of pigs are so similar to those of humans, xenotransplantation is almost
always successful.
c. Doctors have perfected the technique for transplanting corneas.
d. The tissue is not exposed to lymphocytes.
e. There are numerous donors of corneas, so the success rate of transplantation is high.
D
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Which diseases are associated with imprinting?
A. Angelman Syndrome B. LHON C. Alzheimer's Disease D. All of the answers are correct
Calcium-calmodulin complexes ultimately mediate the phosphorylation of myosin in which of the following cells?
A) smooth muscle B) cardiac muscle C) neurons D) pacemaker E) skeletal muscle
Select the incorrect statement related to fungi.
A. All fungi secrete digestive enzymes and practice external digestion. B. Some fungi can break down cellulose into its glucose subunits. In addition, some fungi are predaceous. C. One method of reproduction in fungi is by flagellated sperm. Water is a requirement for those particular fungi to reproduce. D. Some fungi are able to grow to many hectares in size. E. Cheese, wine, and soy sauce are but a few examples of foods dependent on fungi for their production.
How is the formation of the peptide bond catalyzed during translation?
a. by aminoacyl-tRNA synthetases b. by snRNP c. by peptidyl transferase d. by RNA polymerase