Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 2TYK
Which of the following is an important exception to the central dogma of molecular biology?
a. Many genes code for RNAs that function directly in the cell.
b. DNA is the repository of genetic information in all cells.
c. Messenger RNA is a short-lived “information carrier.”
d. Proteins are responsible for most aspects of the
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Students have asked these similar questions
Which of the following statements about the differential expression of human genes is correct?
A. Differential expression does not occur during embryogenesis (development of the embryo).
B. The unused genes in differentiated cells no longer retain the potential to be expressed.
C. Gene expression patterns of all cells are identical.
D. Every cell nucleus contains the complete genome established in the fertilized egg.
1a) Why is it possible for you to study the eye colour gene by extracting cheek cells?
a. Because the nucleus of every cell in the human body contains the same genetic information.
b. Because the cheek cells are located near the cells of the eye and so they are able to exchange DNA.
c. Because all genes in the human body are expressed at all times so it is easy to study them.
d. All of the above are possible explanations.
1b) What is the purpose of heating the sample to 75°C following addition of the 0.2M NaOH solution?
a. To denature the histone proteins that are keeping the DNA tightly coiled.
b. To ensure that all the DNA is removed from the swab in preparation for PCR.
c. To breakdown the cheek cell membrane to release the DNA from the cell.
d. It breaks down the circular DNA down into linear fragments so that they will be easier to visualize.i
Even when a gene is available and its sequence of nucleotides is known, chemical studies of the protein are still required to determine:
a. molecular weight of the unmodified protein.
b. the amino-terminal amino acid.
c. the location of disulfide bonds.
d. the number of amino acids in the protein.
e. whether the protein has the amino acid methionine in its sequence.
Chapter 16 Solutions
Biological Science (7th Edition)
Ch. 16 - 2. Which of the following is an important...Ch. 16 - Prob. 3TYKCh. 16 - A minimal genetic code requires only 21 codons–one...Ch. 16 - MODEL Draw a hypothetical metabolic pathway in...Ch. 16 - Prob. 11PIATCh. 16 - Prob. 12PIATCh. 16 - 13. A small portion of the human transport protein...Ch. 16 - Prob. 14PIAT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- When using gene therapy to treat an hereditary disease, the idea is to: A. Introduce the correct gene into the patient's DNA B. Inject the patient with a specific protein to cure the disease. C. Blood transfusions from healthy individuals. D. ntroduce mRNA molecules with the correct genetic information to the patient. E. Introduce a virus to the patient that will specifically destroy mutated cells.arrow_forwardA.) DNA encodes for the cell genome and is therefore a permanent copy to have a functioning cell. B.)Different changes to the structure of messenger RNA can cause mutations and genomic instability which could lead to abnormal cells in the body. a. Statement A is correct b. Statement B is correct c. Both A and B are correct d. Both A and B are incorrectarrow_forwardWhich of the following schemes for molecular information flow never occurs in cellular life forms? a. DNA to rRNA b. mRNA to protein c. DNA to tRNA d. DNA to mRNA e. RNA to DNAarrow_forward
- Which of the following statements about Tbx5 is true? a. Tbx5, Tbx4, and AmphiTbx4/5 have very similar coding regions. b. Tbx5 is involved in tail development in vertebrates. c. Tbx5, Tbx4, and AmphiTbx4/5 have very similar regulatory regions. d. Tbx5 initiates hindlimb development.arrow_forwardWhich of the following is true about the three major classes of RNAs in the cell: mRNAs, tRNAs, and rRNAs? A. mRNAs encode polypeptide chains. B. tRNAs are structural components of the ribosome. C. rRNAs are adapter molecules that translate the information on an mRNA into a polypeptide sequence. D. mRNAs can also encode tRNAs and rRNAs.arrow_forwardcentral dogma of molecular biology describe the flow of information in the cell.There are also exceptions to the central dogma. Which of the following examples is inconsistent with the flow of genetic information in the cell? a. from DNA to mRNA b.from mRNA to protien c.from protien to DNA d.from DNA to rRNA e. from DNA to tRNAarrow_forward
- What did the Hershey / Chase experiments (above) demonstrate about the molecules responsible for genetic inheritance patterns in the T2 bacteriophage? A. the genetic material consists of carbohydrates, not RNA B. the genetic material consists of protein, not lipids C. the genetic material consists of DNA, not polypeptides D. the genetic material consists of protein, not DNA E. the genetic material consists of lipids, not polypeptidesarrow_forwarda. Which gene is mutated in individuals with sickle-cell anemia? b. What are the major symptoms of this disorder? c. What was the first published scientific description of sickle-cell anemia? d. Describe two other features of this disorder that you learned from the OMIM database and state where in the database you found this informationarrow_forwardA few genes produce regulatory molecules that help the cell assemble proteins. The journey from gene to protein is complex and tightly controlled within each cell. Which of the following statements best describes the role of DNA and RNA in protein synthesis? * A. DNA is the primary genetic material contained within a cell. B. DNA is the long-term storage while RNA is the messenger containing instruction from DNA C. DNA creates protein during protein synthesis & converts it into usable molecules while RNA assembles amino acid into a protein. D. All of the above. Humans and chimpanzees share many common characteristics. How would you explain the similarities of the amino acid sequences that can be found in both organisms? * A. Two groups share a relatively common ancestor B. Humans evolved from chimpanzees C. Two groups belong to the same species D. Chimpanzees evolved from…arrow_forward
- Which of the following is true about the enzyme telomerase? A. It is found only in adult cells. B. It is responsible for telomere shortening. C. It can re-establish telomere length. D. It may speed up the aging process. E. It is expressed at low levels in cancer cells.arrow_forwardWhich of the following statament is NOT TRUE about gene expression?a. The expression of genes that code for proteins includes two stages: replication and translationb. Translation is the synthesis of a polypeptide using the information in the mRNA.c. During gene expression, the information encoded in genes is used to make specific polypeptide chains or RNA molecules.d. Gene expression is the process by which DNA directs the synthesis of proteinsarrow_forwardMost scientists consider the Human Genome Project (HGP) to be the most significant scientific project of the 21st century. Choose the statements that describe the key findings of the Human Genome Project. A. There are 23 pairs of chromosomes that make up the human genome. B. DNA exists in a double helical form. C. There are approximately three billion base pairs in the human genome. D. The human genome contains approximately 25000 genes. E. The genetic information of a cell is stored in the form of DNA.arrow_forward
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