Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 21, Problem 5SQ
Summary Introduction
Introduction: Ribonucleic acid (RNA) is the genetic material of some viruses and is involved in transcription, translation, gene regulation in prokaryotes, archaea, and eukaryotes. A class of RNA is transfer RNA (tRNA).
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Treating a cell with a drug to stop tRNA from doing its job would mean what?
A. that ribosomes would fall apart
B. that sugars would not be added to proteins
C. that nothing would be available to translate
D. that amino acids would not be brought to the growing protein
Muscle cells differ from nerve cells mainly because they(A) express different genes.(B) contain different genes.(C) use different genetic codes.(D) have unique ribosomes.
Ribosomal RNA ____________________.
a. Carries amino acids to the ribosome
b. Carries information from the DNA to the ribosome
c. Helps make up the ribosome
d. Carries oxygen to cells
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- The anticodon … A. is complementary to the mRNA B. is found on the ribosome C. is found on the tRNA D. A and Carrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forwardUse your genetic code (codon) table to answer the next two questions: What type of mutation would result if the sequence of a gene were altered so that the sequence of the mRNA was changed from: AUGCCGUGCAGUAAC to AUGCCAUGCAGUAAC A) a silent mutation B) a nonsense mutation C) a frame-shift mutation D) a missense mutation E) a base insertion mutationarrow_forward
- Which molecule contains the genetic code? A. rDNA B. rRNA C.Ribosome D. mRNA E. tRNAarrow_forwardWhich event contradicts the central dogma of molecular biology? a. Poly-A polymerase enzymes process mRNA in the nucleus. b. Endonuclease enzymes splice out and repair damaged DNA. c. Scientists use reverse transcriptase enzymes to make DNA from RNA. d. Codons specifying amino acids are degenerate and universal.arrow_forwardThe ribosome is needed for translation of mRNA (a) because it has the enzyme for adding amino acids to the 5’ end of a tRNA (b) because the ribosomal RNA contains the codon which determines the sequence of amino acids in a protein (c) because it positions tRNA and mRNA so that correct pairing of codon and anti-codon can occur (d) because it has an enzyme that removes introns from mRNA (e) all of the abovearrow_forward
- A ribozyme is a. a complex between RNA and a protein. b. an RNA that encodes a protein that functions as an enzyme. c. an RNA molecule with catalytic function. d. a protein that degrades RNA molecules.arrow_forwardThe information a cell needs to function is found on the DNA molecule in the form of a. multiple combinations of unknown chemicals. b. RNA subgroups. c. a spiral helix. d. four bases and the order in which they appear.arrow_forward______ molecules deliver amino acids to the site of protein synthesis. a. DNA b. mRNA c. rRNA d. tRNAarrow_forward
- Which is true about eukaryotic cDNA? Choose all that apply a. it is single stranded b. it is made up of only introns c. it is constructed from mRNA that is reverse transcribed d.arrow_forwardProteins are not suitable to the genetic molecules within cells because they? a) are large organic compounds b) are composed of building blocks called amino acids c) do not replicate themselves d) catalyze biochemical reactionsarrow_forwardWhich of the following best describes mRNA?Group of answer choices a) Complexes with ribosomal proteins to form ribosomes b) Transports amino acids to ribosomes during translation c) Provides the instructions for the amino acid sequence of a polypeptide d) Used for eukaryotic RNA processingarrow_forward
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