Prior to genetic engineering, insulin for humans with insulin-dependent diabetes was extracted from pigs and cattle. Presently insulin is produced by transgenic
A) humans.
B) chickens.
C) viruses.
D) bacteria.
E) monkeys.
D
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Match the complex with the electron donor.
A) NADH B) oxygen C) succinate D) cytochrome c E) Fe-S center F) ADP G) coenzyme Q H) ATP 1. complex I 2. complex II 3. complex III 4. complex IV
What allows each strand of DNA to serve as a template for a new DNA strand during replication?
a. covalent bonding between nucleotide bases b. hydrogen bonds between the deoxyribose and the phosphate groups c. complementary base pairing between purines and purines on opposite strands d. complementary base pairing between pyrimidines and pyrimidines on opposite strands e. complementary base pairing between purines and pyrimidines on opposite strands
Soil Consists of:
a. rock particles of various sizes b. minerals c. microorganisms d. organic matter from dead organisms e. All of the above
Which organism's life depends on photosynthesis?
A. corals B. oak trees C. humans D. sea slug Elysia chlorotica E. All answers are correct.