ESSENTIAL CELL BIOLOGY-TEXT (PB)
5th Edition
ISBN: 9780393680324
Author: ALBERTS
Publisher: NORTON
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Chapter 14, Problem 14Q
Summary Introduction
To choose: The correct alternative in italics given in the statement “If no O2 is available, all components of the mitochondrial electron transport chain will accumulate in their reduced/oxidized form. If O2 is suddenly added again, the electron carriers in cytochrome c oxidase will become reduced/oxidized before/after those in NADH dehydrogenase.”
Concept introduction: NADH2 and FADH2 donate high-energy electrons to the inner mitochondrial matrix, and it will pass along the electron transport chain and it will combine with the molecular oxygen to form water.
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Transcription and Translation
1. What is the main function of transcription and translation? (2
marks)
2. How is transcription different in eukaryotic and prokaryotic
cells? (2 marks)
3. Explain the difference between pre-mRNA and post-transcript
mRNA. (2 marks)
4. What is the function of the following: (4 marks)
i. the cap
ii. spliceosome
iii. Poly A tail
iv. termination sequence
5. What are advantages to the wobble feature of the genetic
code? (2 marks)
6. Explain the difference between the: (3 marks)
i. A site & P site
ii. codon & anticodon
iii. gene expression and gene regulation
7. Explain how the stop codon allows for termination. (1 mark)
8. In your own words, summarize the process of translation. (2
marks)
Chapter 14 Solutions
ESSENTIAL CELL BIOLOGY-TEXT (PB)
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