Which of the following is an assisted reproductive technology?
A) Producing human insulin in bacteria
B) A couple conceive using sperm from a sperm bank.
C) A man donates part of his liver to his daughter, who has cystic fibrosis.
D) A woman has breast reduction surgery to alleviate back pain.
B) A couple conceive using sperm from a sperm bank.
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The limitation on microbial growth rate at high nutrient levels is/are
A. the saturation of the transport proteins for nutrient uptake. B. the rate of protein synthesis. C. the rate of DNA replication. D. All of the choices are correct.
Regulation of an enzyme's activity occurs
A) transcriptionally. B) translationally. C) posttranslationally. D) at any point on the enzymatic production pathway.
The black spots seen on a moldy piece of bread are which part of a zygomycete?
A. the sporangia B. the hyphae C. the mycelium D. the rhizoids E. the zygotes
A lake in which nutrients are low is
a. atrophic. b. oligotrophic. c. eutrophic. d. hypotrophic. e. hypertrophic.