A mutation that results in the premature halting of transcription (and, consequently, protein translation) of a particular gene is a ________ mutation
a. complementary
b. missense
c. nonsense
d. transition
Answer: C
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The final step of the Krebs cycle regenerates ____
a. pyruvate b. acetyl-CoA c. fructose bisphosphate d. oxaloacetate e. citrate
Which type of tissue is composed of cells that are often dead at maturity?
a. parenchyma b. sclerenchyma c. collenchy
d. epidermis e. lignin
Why do living organisms have the potential for errors (mutations and/or variations) in their development?
a. so that organisms may contribute to evolution b. so that organisms may live unchanged c. so that organisms may die unchanged d. so that organisms may contribute to reproduction
The tradeoffs that underlie antagonistic pleiotropy** are due to negative effects of _______ on survival. **hint: make sure you can define this term
A. predation B. maximum lifespan C. early reproduction D. competition E. population density