MasteringBiology With eText - Access
7th Edition
ISBN: 9780321911940
Author: Johnson
Publisher: PEARSON
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Chapter 17, Problem 2AWK
Summary Introduction
To review:
“Doublet code” coding for one amino acid would be sufficient or not.
Introduction:
RNA (ribonucleic acid) refers to a
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The genetic code uses three bases to encode one amino acid. Why can't the code use only two bases to encode each amino acid?
What is the significance (or function) of tRNA in protein synthesis? In other words, explain why tRNA is so important. How many different tRNA’s are there?
Why could a codon not consist of only two bases?
Chapter 17 Solutions
MasteringBiology With eText - Access
Ch. 17 - Do you think the potential benefits of therapeutic...Ch. 17 - Should research leading to human reproductive...Ch. 17 - Describe how DNA is replicated before cell...Ch. 17 -
2. Compare and contrast the processes of...Ch. 17 - Explain what mutations are and the role of DNA...Ch. 17 - Name the four phases of mitosis and describe...Ch. 17 -
5. Explain why only one large egg is formed...Ch. 17 - Describe what is meant by selective gene...Ch. 17 - Explain how factors present in the environment can...Ch. 17 - Describe how ribosomes contribute to the formation...
Ch. 17 - Prob. 9CRCh. 17 - Prob. 10CRCh. 17 - What would be the outcome if a cell completed...Ch. 17 - Prob. 2TYCh. 17 - Prob. 3TYCh. 17 - Prob. 4TYCh. 17 - Which of the following are listed in order from...Ch. 17 - Prob. 6TYCh. 17 - Which is likely to be the shortest chain of...Ch. 17 - How many different amino acids could be encoded if...Ch. 17 - Prob. 9TYCh. 17 - Why do cells within an organism differentiate,...Ch. 17 - Which method of cloning is most similar to the way...Ch. 17 - Prob. 12TYCh. 17 - Prob. 13TYCh. 17 - Prob. 14TYCh. 17 -
15. How does the production of sperm differ from...Ch. 17 - Prob. 1AWKCh. 17 - Prob. 2AWKCh. 17 - Prob. 3AWKCh. 17 - Prob. 4AWKCh. 17 - Mitochondria contain their own DNA that is...Ch. 17 - Bacteria can reproduce by simple cell division....
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- If the genetic code uses triplets, how many different amino acids can be coded by a repeating RNA polymer composed of UA and UC (UAUCUAUCUAUC ...)? a. one b. two c. three d. four e. fivearrow_forwardIf there are 64 possible codons in the genetic code and the amino acid is specified by each, as read in the 5’ to 3’ direction from the mRNA sequence, which ones are STOP codons?arrow_forwardWhy is RNA structure so unstable? Explain in detail.arrow_forward
- How many codons would exist in a genetic code that had codons that were four bases long? Why? (show the equation for calculation)arrow_forwardIf there are 64 codons, how can there be fewer than 64 tRNA molecules?arrow_forwardA genetic code in which two bases encode a single amino acid is not adequate for protein synthesis. Give a reason why.arrow_forward
- Why is DNA and not any other macromolecule represents the genetic code?arrow_forwardA group of 3 nucleotides codes for one amino acid. How many codons are needed to make the polypeptide that results?arrow_forwardWhat is unusual about the answers for Questions 13k, 13l, 13m, and 13n? Because the multiple codons exist for most amino acids, the genetic code is said to be _____________.arrow_forward
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