Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 18, Problem 8TYK
Summary Introduction
Introduction: A human genome project was aimed at determining the
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Why can the transcriptome not be used to predict the proteome with complete accuracy?
a. It cannot be sequenced like the genome can be.
b. The transcriptome is too dynamic to be used to make predictions.
c. Not all genes are transcribed.
d. Many transcripts are alternatively spliced to produce different proteins.
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 polypeptides
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
Chapter 18 Solutions
Study Guide for Campbell Biology
Ch. 18 - In the following diagram of the lac operon, an...Ch. 18 - a. Repressible enzymes usually function in _____...Ch. 18 - a. Give an example of highly methylated and...Ch. 18 - Label the components of the following diagram that...Ch. 18 - a. How is the process of alternate RNA splicing...Ch. 18 - a. Describe how miRNAs regulate gene expression....Ch. 18 - a. What is the difference between determination...Ch. 18 - What type of evidence established that Bicoid...Ch. 18 - a. List three genetic changes that can convert a...Ch. 18 - Complete the following concept map to help you...
Ch. 18 - Fill in the following table to help you organize...Ch. 18 - Prob. 3SYKCh. 18 - Prob. 1TYKCh. 18 - Prob. 2TYKCh. 18 - Prob. 3TYKCh. 18 - Prob. 4TYKCh. 18 - Prob. 5TYKCh. 18 - DNA methylation of cytosine bases a. initiates the...Ch. 18 - Which of the following is not true of enhancers?...Ch. 18 - Prob. 8TYKCh. 18 - A eukaryotic gene typically has all of the...Ch. 18 - Prob. 10TYKCh. 18 - Prob. 11TYKCh. 18 - Which of the following statements explains why a...Ch. 18 - Prob. 13TYKCh. 18 - Prob. 14TYKCh. 18 - Prob. 15TYKCh. 18 - Prob. 16TYKCh. 18 - What would be the fate of a Drosophila larva that...Ch. 18 - Prob. 18TYKCh. 18 - Prob. 19TYKCh. 18 - Prob. 20TYKCh. 18 - Prob. 21TYKCh. 18 - Prob. 22TYKCh. 18 - Prob. 23TYKCh. 18 - Which of the following would most likely account...
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- What observations are consistent with the conclusion that DNA serves as the genetic material in eukaryotes? Select the four correct statements. a. DNA content and ploidy in various cell types( sperm and somatic cells) are related b. DNA is found to be the only macromolecule in eukaryotes that has different subunits. c. Gene transfer is a direct evidence as it has been facilitated by recombinant DNA techniques. d. The correlation of the action and absorption spectra of ultraviolet light support the interpretation that DNA is a genetic material. e. DNA is shown to be present in ribosomes, matrix, and nucleus, where genetic function is performed. f. DNA is shown to be present in mitochondria, chloroplasts, and nucleus, where genetic function is performed.arrow_forwardThe existence of ubiquitous genes and proteins (performs the same function in all organisms) strongly support the theory that all life evolved from a common ancestor. With that in mind, what kind of genes might be evolutionarily conserved and universally found in bacteria, plants and animals? Select one: a. genes that code for the synthesis of ribosomes. b. genes that code for the enzymes of glucose metabolism c. genes that code for the synthesis DNA and RNA polymerase d. all of the above. Clear my choicearrow_forwardWhat are the most highly-conserved regions of human DNA (when compared to similar DNA sequences in closely-related animals)? A. transposons B. non-transcribed spacers C. introns D. pseudogenes E. exonsarrow_forward
- The original DNA base sequence is 5’-AGCGTTACCGT-3’; a mutation in the DNA strand results in the base sequence 5’-AGGCGTTACCGT-3’. What can you conclude about the mutation? A. It is a frameshift mutation. B. It is a silent mutation. C. It is a deleterious mutation. D. It may result in a single amino acid change in the protein being coded for by this base sequence.arrow_forwardAll the cells of one organisms share the genome. However, during development, some cells develop into skin cells while others develop into muscle cells. How can the same genetic instructions result in two different cell types in the same organism? Thoroughly explain your answer.arrow_forwardOver several years, researchers learned more about proteins and the genes which code for them, the findings of which lead them to revise the original one gene-one enzyme hypothesis. Which of the following is NOT one of the findings which led to revision? a. many genes code can code for RNA molecules which never go on to produce a protein at all b. oftentimes, many genes are required to produce a single protein, where one gene produces one polypeptide and many polypeptides together make the single protein c. in addition to enzymes, gene products also include non-enzyme proteins like keratin and insulin d. a single gene produces one specific enzyme e. a single gene may code for multiple different (closely related) polypeptidesarrow_forward
- Why is it adaptive for a bacterium to not express the genes that encode that lactose utilization proteins when lactose is not available? a. Catabolism of lactose in protein transcription needs a lot of energy. b. The bacterium opts not to express the genes that encode proteins responsible for breaking down lactose to conserve enzymes. c. The bacterium opts not to express the genes that encode proteins responsible for breaking down lactose to conserve energy. d. The reason is conservation of energy for the enzyme. e. The bacterium opts not to express the genes that encode proteins responsible for breaking down lactose to conserve lactose.arrow_forwardWhich of the following statements about genes is incorrect? Select one: O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg. b. Genetic differences can result from changes in the DNA called mutations. O c. Genes correspond to segments of DNA. d. Under normal circumstances, each chromosome contains precisely one gene. e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.arrow_forwardGive detailed Solution with explanation neededarrow_forward
- The CFTR gene is very well conserved from mice to humans. What conclusions can you make about CFTR based on this information? A. The coding sequence of the CFTR gene is less susceptible to mutation B. CFTR is just as susceptible to mutation as other genes, but many CFTR mutations are lethal thereby preventing them from being passed on C. The protein encoded by the CFTR gene has a critical function in those organisms D. A and C only E. B and C onlyarrow_forwardResearchers studying the Dutch famine of the winter of 1944-45 found that effects of malnutrition during pregnancy were still seen two generations later, for example in rates of obesity. How could this environmental effect be inherited over generations? Choose the most likely answer A. The results were an artefact, because environmental conditions were not taken into account. B. Histone modifications such as acetylation are passed on through generations. C. All methylation patterns are scrubbed during development of an embryo. D. DNA methylation patterns can be passed on in a parent-of-origin specific manner.arrow_forwardThe goal of most gene therapies is to insert a healthy copy of a gene into the genome. Besides CRISPR, techniques for integrating DNA into the genome do not target that DNA to a particular genomic location and thus different cells end up with the DNA sequence in different positions. A. It has been shown that where the healthy gene integrates is heavily influenced by chromatin. Why? B. The same gene integrated into different locations in the genome will be expressed differently. Why? C. Over time the expression of an integrated gene will change, usually decreasing. Describe how you think the cell downregulates expression of an integrated gene.arrow_forward
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