Genetic engineering has produced which of the
following animals?
a. goats with heart-healthy milk
b. low-fat pigs
c. extra hefty sheep
d. cows resistant to mad cow disease
e. all of these
Answer: e
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Describe how continental drift resulting in Australia being isolated in the South Pacific contributed to
biological species evolution. What will be an ideal response?
An antigen is:
a. a phagocytic cell. b. used to combat infections. c. a molecule used by bacteria to destroy antibodies. d. any molecule that is recognized as foreign by the immune system. e. any molecule that is recognized as natural by the immune system.
Which of the following bacterial cell structures plays an important role in the creation of biofilms?
A) glycocalyces B) flagella C) fimbriae D) pili E) both fimbriae and glycocalyces
The mitochondrial ATP synthase consists of several different protein subunits. Which subunit binds to ADP + Pi and catalyzes the synthesis of ATP as a result of a conformational change?
(a) transmembrane H+ carrier (b) F1 ATPase head (c) peripheral stalk (d) central stalk