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 4, Problem 15PIAT
Summary Introduction
To review:
The Chargaff’s observations helped Watson and Crick to propose the complementary base pairing in double-stranded DNA model. The similar ratios of
Introduction:
Watson and Crick used Chargaff’s data of 1:1 between adenine:thymine (A:T) and guanine:cytosine (G:C) to establish the concept of complementary base pairing by DNA (deoxyribonucleic acid) double-helix model.
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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)
In this activity you will research performance enhancers that affect the
endocrine system or nervous system. You will submit a 1 page paper on one
performance enhancer of your choice. Be sure to include:
the specific reason for use
the alleged results on improving performance
how it works
how it affect homeostasis and improves performance
any side-effects of this substance
Chapter 4 Solutions
Biological Science (6th Edition)
Ch. 4 - What are the four nitrogenous bases found in RNA?...Ch. 4 - 2. What determines the primary structure of a DNA...Ch. 4 - 3. Which of the following describes the synthesis...Ch. 4 - Prob. 4TYKCh. 4 - Prob. 5TYUCh. 4 - Prob. 6TYUCh. 4 - What would be the sequence of the strand of DNA...Ch. 4 - 8. According to the RNA world model, a ribozyme...Ch. 4 - Make a concept map (see BioSkills 12 ) that...Ch. 4 - Prob. 10TYPSS
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