5. The genetic evidence for a triple code (three nucleotides are responsible- for one amino acid) comes from the following observation: One or two nucleotide insertions created a mutated virus, while 3 nucleotide insertions had no effect on the virus. Three nucleotide insertions created a mutated virus, while one or two nucleotide insertions had no effect on the virus. Three or four nucleotide insertions created a mutated virus, while one nucleotide insertion had no effect on the virus. One or three nucleotide insertions created a mutated virus, while two nucleotide insertions had no effect on the virus.

5. The genetic evidence for a triple code (three nucleotides are responsible- for one amino acid) comes from the following observation: One or two nucleotide insertions created a mutated virus, while 3 nucleotide insertions had no effect on the virus. Three nucleotide insertions created a mutated virus, while one or two nucleotide insertions had no effect on the virus. Three or four nucleotide insertions created a mutated virus, while one nucleotide insertion had no effect on the virus. One or three nucleotide insertions created a mutated virus, while two nucleotide insertions had no effect on the virus.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter12: Dna: The Carrier Of Genetic Information

Section: Chapter Questions

Problem 3TYU: In the Hershey-Chase experiment with bacteriophages, (a) harmless bacterial cells permanently...

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In the Hershey-Chase experiment with bacteriophages, (a) harmless bacterial cells permanently transformed into virulent cells (b) DNA was shown to be the transforming factor of earlier bacterial transformation experiments (c) the replication of DNA was conclusively shown to be semiconservative (d) viral DNA was shown to enter bacterial cells and cause the production of new viruses within the bacteria (e) viruses injected their proteins, not their DNA, into bacterial cells
Which of the following statements about DNA is false? a. Phosphate is linked to the 5 and 3 carbons of adjacentdeoxyribose molecules. b. DNA is bidirectional in its synthesis. c. Each side of the helix is antiparallel to the other. d. The binding of adenine to thymine is through three hydrogenbonds. e. Avery identified DNA as the transforming factor in crossesbetween smooth and rough bacteria.
If DNA of a particular species was analyzed and it was found that it contains 27 percent A, what would be the percentage of C? 27 percent 30 percent 23 percent 54 percent
4. Explain the following relationship: DNA formats RNA, which makes proteins.
1. A particular virus with DNA as its genetic materialhas the following proportions of nucleotides: 20% A,35% T, 25% G, and 20% C. How can you explain thisresult?
8) Which of the following best describes why it is possible for the bacteria to read the instructions in a human gene and produce a human protein as a result? Bacterial cells and human cells are identical and contain the same organelles Bacterial cells and human cells both use DNA to store their genetic information The genetic code is universal - the same codon codes for the same amino acid in all species The bacterial cell already contains a gene that is very similar to the human growth hormone gene
1. How may recombinant DNA molecules be introduced into human cells? a. by splicing the needed genes into a mammalian chromosome using restriction enzymes. b. by adding plasmids to the mammalian cells. c. by using engineered viruses as vectors. d. by using a gene gun. 2. If someone is accused of a crime, investigators can collect his or her DNA to compare the DNA of the cells found at the crime scene. To collect human DNA, investigators often swab the inside of person’s cheek. Just a few human cheek cells contain enough material to perform PCR. In a cell, the nucleus and mitochondria contain DNA that is the starting material for PCR. Identify the 4 components needed to start a PCR reaction (equipment not included)
2. Describe what is meant be the antiparallel arrangement of DNA.
1.) A portion of a strand of a much longer molecule has a nucleotide sequence AGC – AGG – CAG - ATC, if this strand is replicated, what will be its complimentary strand? a.)TCG – TCC – GTC - TAG b.)AGC - AGG – CAG - AUC c.)AGC – AGG – CAG - ATC b.)UCG – UCC – GUC – UAG 2.)If the environment gets cold, we often shiver to____ a.)decrease body temperature b.)keep body temperature the same as the external temperature c.)regulate blood pressure d.)increase body temperature 3.)How does a neuron transmit a message from cell to cell? A nerve impulse travel_ a.)from the end of the axon, through the cell body up to the dendrite’s terminal, then across the synapse to the axon of another neuron b.)from the dendrites of one neuron to the dendrites of another neuron passing the cell body to the synapse of the axon c.)from the end of dendrite, through the cell body, down the axon terminals, then travels across the synapse to the dendrite of another neuron d.)from the axon of one neuron to the…
1. What extra step need to be taken after collecting samples of many viruses before PCR can be performed? What enzyme will accomplish the extra step?
(1) Describe the nitrogenous base pairing in DNA and RNA.(2) Determine the number of bonds in each nitrogenous base pairs.
4. It is known that RNA is a nucleic acid responsible for the synthesis of proteins. However, there is another nucleic acid alongside RNA: DNA. What role does the latter play in relation to RNA? a) RNA is synthesized in the cell in case too large a mutation damages the DNA. b) DNA has the reproductive genetic code of all cells and passes it on to RNA. c) DNA directs the synthesis of enzymes, while RNA synthesizes proteins. d) DNA synthesizes RNA according to a blueprint that includes the guidelines necessary for the structure of proteins.