Introduction To General, Organic, And Biochemistry
12th Edition
ISBN: 9781337571357
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 25, Problem 30P
In what sense does the universality of the genetic
code support the theory Of evolution?
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A forensic scientist is trying to find out the number of adenine bases in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine? O The number of adenine bases will be equal to the number of guanine bases. O The number of adenine bases will be equal to the total of all the other bases. O The number of adenine bases will be equal to the number of thymine bases. O The number of adenine bases will be half of the number of cytosine bases.
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. It contains the biological instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction. Nearly every cell in a person's body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA).
The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people.
The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.
DNA bases…
While working part-time at a lab, Matthew is asked to grab a jar that contains carbohydrates. Two jars are on the counter, each labeled with their chemical formula. One is labeled C5H10O5, and the other is C3H9O3.
Which one is the carbohydrate?
What should Matthew's decision be based upon?
Based on the number of carbons, what group of sugars should this compound be classified as?
Chapter 25 Solutions
Introduction To General, Organic, And Biochemistry
Ch. 25.1 - Prob. 25.1QCCh. 25.2 - Problem 26-1 DNA is highly condensed in the...Ch. 25.3 - Prob. 25.3QCCh. 25.4 - Prob. 25.4QCCh. 25.5 - Prob. 25.5QCCh. 25.6 - Prob. 25.6QCCh. 25.7 - Prob. 25.7QCCh. 25.8 - Prob. 25.8QCCh. 25.9 - Prob. 25.9QCCh. 25 - Does the term gene expression refer to: (a)...
Ch. 25 - Prob. 2PCh. 25 - Where does most Of the translation occur in a...Ch. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - What is the function of RNA polymerase?Ch. 25 - What is the role of helicase in transcription?Ch. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - What are the different names used for the two...Ch. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Prob. 20PCh. 25 - Where are the codons located?Ch. 25 - What are the two most important sites on tRNA...Ch. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - (a) If a codon is GCU, what is the anticodon? (b)...Ch. 25 - If a segment of DNA is 981 units long, how many...Ch. 25 - In what sense does the universality of the genetic...Ch. 25 - Prob. 31PCh. 25 - Prob. 32PCh. 25 - A genetic code in which two bases encode a single...Ch. 25 - What is meant by the genetic code being continuous...Ch. 25 - Prob. 35PCh. 25 - Prob. 36PCh. 25 - Prob. 37PCh. 25 - Prob. 38PCh. 25 - Prob. 39PCh. 25 - What are the stages of protein synthesis?Ch. 25 - Prob. 41PCh. 25 - Explain what happens to the fMet initially put at...Ch. 25 - Prob. 43PCh. 25 - Why is amino acid activation called the second...Ch. 25 - Prob. 45PCh. 25 - Prob. 46PCh. 25 - Prob. 47PCh. 25 - Prob. 48PCh. 25 - Prob. 49PCh. 25 - What kind of interactions exist between metal-...Ch. 25 - Prob. 51PCh. 25 - Prob. 52PCh. 25 - Prob. 53PCh. 25 - Prob. 54PCh. 25 - Prob. 55PCh. 25 - Prob. 56PCh. 25 - Prob. 57PCh. 25 - Prob. 58PCh. 25 - Prob. 59PCh. 25 - Prob. 60PCh. 25 - Prob. 61PCh. 25 - Prob. 62PCh. 25 - Prob. 63PCh. 25 - Prob. 64PCh. 25 - Prob. 65PCh. 25 - Prob. 66PCh. 25 - Prob. 67PCh. 25 - Prob. 68PCh. 25 - Prob. 69PCh. 25 - Prob. 70PCh. 25 - Prob. 71PCh. 25 - Prob. 72PCh. 25 - Prob. 73PCh. 25 - Prob. 74PCh. 25 - Prob. 75PCh. 25 - Prob. 76PCh. 25 - Prob. 77PCh. 25 - Prob. 78PCh. 25 - Prob. 79PCh. 25 - Prob. 80PCh. 25 - Prob. 81PCh. 25 - Prob. 82PCh. 25 - Prob. 83PCh. 25 - Prob. 84PCh. 25 - Prob. 85PCh. 25 - Prob. 86PCh. 25 - Prob. 87PCh. 25 - Prob. 88PCh. 25 - Prob. 89PCh. 25 - Prob. 90PCh. 25 - Prob. 91PCh. 25 - Prob. 92PCh. 25 - Prob. 93PCh. 25 - Prob. 94PCh. 25 - Prob. 95PCh. 25 - Prob. 96PCh. 25 - Is there any way to prevent a hereditary disease?...Ch. 25 - Prob. 98PCh. 25 - Prob. 99PCh. 25 - Prob. 100PCh. 25 - Glycine, alanine, and valine are classified as...Ch. 25 - Prob. 102PCh. 25 - Which polypeptide is coded for by the mRNA...Ch. 25 - -100 A new endonuclease is found. It cleaves...
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- What is a chromosome? How many chromosomes are in a human cell? What is the approximate number of genes in a human cell?arrow_forwardGenetic engineering shows great promise for the future but has been controversial at times. Discuss with some classmates the pros and cons of genetic engineering. List two benefits and two concerns that come from your discussion.arrow_forwardWhat are the dangers inherent in applying genetic engineering to human embryos? What are the benefits?arrow_forward
- Select the single best answer. Watson and Crick determined that the DNA molecule has two helical strands. Each strand is made up which consist of a base, a deoxyribose, and a phosphate group linked together. of What word most correctly fills in the blank in the preceding statement? nucleotides fatty acids monosaccharides amino acidsarrow_forwardA segment of double-stranded DNA contains 200 purines and 200 pyrimidines. It could be composed of O 100 thymine, 100 cytosine, 100 guanine and 100 adenine molecules. 200 guanine and 200 thymine molecules. O 200 adenine and 200 cytosine molecules. O 200 cytosine and 200 thymine molecules. O 200 adenine and 200 uracil molecules.arrow_forwardHO C SH I CH 2 NH 2 -CH-CH 2 -CH 2 -C NH —CH —C Glutamic acid |NH —CH 2-C OH Glycine The molecule depicted above is a tripeptide. Here is another representation of it. The amino acid in the middle isarrow_forward
- Protein sequence is always read (blank) terminal to (blank) terminal. And DNA sequence is always read (blank) prime to ( blank) prime. I need help filling in the blanks please? ? Thanksarrow_forwardYou are working in a biotechnology lab and are analyzing DNA. You obtain a sample of a short dodecamer of DNA that contains 12 base pairs. What must the ratio of adenine to thymine be in your sample?arrow_forward2. If the diploid number of an organism is 100 what is the haploid numberarrow_forward
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