Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 53, Problem 15PIAT
Summary Introduction
To review:
The model illustrating the tipping point hypothesis of Amazonian forests’ destruction.
Introduction:
Amazonian forests are highly productive and harbor a rich flora and fauna. They are also highly fragile at the same time. As a result of anthropogenic activities and global warming, these forests are facing a threat of extinction.
The positive feedback loops among numerous variables in the Amazon will cause the transformation of forests into grasslands. The positive feedback loops due to these increased activities are illustrated in the figure given below:
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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 53 Solutions
Biological Science (6th Edition)
Ch. 53 - What is the main global reservoir of nitrogen?Ch. 53 - Prob. 2TYKCh. 53 - Prob. 3TYKCh. 53 - Devegetation has what effect on ecosystem...Ch. 53 - Prob. 5TYUCh. 53 - Explain why decomposition rates in a field in...Ch. 53 - Why are the open oceans nutrient poor? Why are...Ch. 53 - Prob. 8TYUCh. 53 - Prob. 9TYPSSCh. 53 - During the Carboniferous period, rates of...
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