Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 24, Problem 7TYK
Summary Introduction
Introduction:
Molecular clock is a term that is used for technique that uses mutation rate of
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Which 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 DNA
What is the central dogma of molecular biology?
a. DNA is the genetic material.
b. Information passes from DNA directly to protein.
c. Information passes from DNA to RNA to protein.
d. One gene encodes only one polypeptide.
Most 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.
Chapter 24 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 24.1 - How does the system of binomial nomenclature...Ch. 24.1 - Prob. 2SBCh. 24.2 - What is the difference between a phylogenetic tree...Ch. 24.2 - What are the differences between a monophyletic...Ch. 24.3 - Prob. 1SBCh. 24.3 - Prob. 2SBCh. 24.3 - Prob. 3SBCh. 24.4 - Prob. 1SBCh. 24.5 - How does outgroup comparison facilitate the...Ch. 24.5 - Prob. 2SB
Ch. 24.5 - Prob. 3SBCh. 24.6 - What assumption underlies the use of genetic...Ch. 24.6 - Prob. 2SBCh. 24.7 - Prob. 1SBCh. 24.7 - Prob. 2SBCh. 24 - The evolutionary history of a group of organisms...Ch. 24 - Prob. 2TYKCh. 24 - Which of the following does not help systematists...Ch. 24 - In a cladistic analysis, a systematist groups...Ch. 24 - Prob. 5TYKCh. 24 - Prob. 6TYKCh. 24 - Prob. 7TYKCh. 24 - When systematists study morphological or...Ch. 24 - Which of the following pairs of structures are...Ch. 24 - To construct a phylogenetic tree by applying the...Ch. 24 - Prob. 11TYKCh. 24 - Prob. 12TYKCh. 24 - Prob. 13TYKCh. 24 - Prob. 14TYKCh. 24 - Imagine that you are a systematist studying a...Ch. 24 - Design an Experiment Imagine that you are trying...Ch. 24 - Prob. 17TYKCh. 24 - The phylogenetic tree for 12 cat species (Felidae)...
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- Which of the following organisms would be the most likely to have identical copies of the Alu sequence, repeated thousands of times in its genome? A. the Japanese pufferfish B. Escherichia coli C. the chimpanzee D. Fugu rubripes E. the mousearrow_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_forwardEven 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.arrow_forward
- The three-domain classification system has recently been developed based on a. mitochondrial biochemistry and plasma membrane structure. b. cellular and rRNA sequence data. c. plasma membrane and cell wall structure. d. rRNA sequence data and plasma membrane structure. e. nuclear and mitochondrial biochemistry.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
- Define the following terms:a. wobble hypothesisb. cognate tRNAc. AUG sequenced. Shine-Dalgarno sequencee. aminoacyl-tRNA synthetasearrow_forwardSpirochetes are free-living, anaerobic bacteria that contain spiral-shaped cells. Nematodes are roundworms that are incredibly diverse and, as a group, have adapted to survive in all environments. Which of the following statements accurately describes the DNA of both groups? A. The spirochaete genome is smaller than the nematode genome. B. Nematode DNA is circular. C. Spirochete chromosomes are composed of just DNA while nematode chromosomes also include specialized proteins. D. Spirochete DNA is linear.arrow_forwardThe advantage of yeast cells over bacterial cells to express human proteins is that: a. yeast cells grow faster b. yeast cells are easier to manipulate genetically c. yeast cells are eukaryotic and modify proteins similarly to human cells d. yeast cells are easily lysed to purify the proteinsarrow_forward
- The technique of tandem mass spectrometry is used to determinea. the amino acid sequence of a peptide fragment.b. the nucleotide sequence of a segment of RNA.c. the nucleotide sequence of a segment of DNA.d. the number of genes in a species’ genome.arrow_forwardThe Human Genome Project was created in 1990 as an international effort began to analyze the human DNA sequence. What was the purpose of this global research project? A. to develop a vaccine for diabetes O B. for scientists to be able to eventually clone humans C. for scientists to be able to determine which genes code for specific proteins D. to make a real-life Spongebob Squarepantsarrow_forwardWhich of the following statements about the genetic code are true and which are false? Correct each false statement. A.Each codon is composed of four bases. B.Some amino acids are represented by more than one carbon. C.All codons represent an amino acid. D.Each living species is thought to have its own unique genetic E.The codon AUG at the beginning of a sequence is a signal for protein synthesis to begin at that codon. F.It is not known if the code contains stop signals for protein synthesis.arrow_forward
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