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 26, Problem 4TYK
Summary Introduction
Introduction:
Robert Koch proposed postulates to classify a causative agent as a pathogen of a particular disease based on four important criteria. These came to be known as Koch’s postulates, which are given as follows:
The pathogen must be present in all organisms with that disease.
The pathogens must be able to grow on a culture plate.
The organism must be able to cause a disease in a healthy organism.
The organism isolated from the diseased organism must be identical to the conventional causative agent.
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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
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Chapter 26 Solutions
Biological Science (6th Edition)
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