Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 21, Problem 11RQ
Which statement is true of reverse transcriptase?
- It is a
nucleic acid - It infects cells
- It transcribes RNA to make DNA. d. It is a lipid.
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Chapter 21 Solutions
Biology 2e
Ch. 21 - Figure 21.5 Which of the following statements...Ch. 21 - Figure 21.8 Influenza virus is packaged in a viral...Ch. 21 - Figure 21.10 Which of the following statements is...Ch. 21 - Which statement is true? A virion contains DNA and...Ch. 21 - The viral______play(s) a role in attaching a...Ch. 21 - Viruses. all have a round shape cannot have a long...Ch. 21 - The observation that the bacteria genus Chlamydia...Ch. 21 - A scientist discovers a new virus with a linear,...Ch. 21 - Which statement is not true of viral replication?...Ch. 21 - Which statement is true of viral replication? In...
Ch. 21 - Which statement is true of reverse transcriptase?...Ch. 21 - Oncogenic virus cores can be. RNA DNA neither RNA...Ch. 21 - Which is true of DNA viruses? They use the host...Ch. 21 - A bacteriophage can infect the lungs viruses...Ch. 21 - People with the CCR5?32 mutation of a T-cell...Ch. 21 - An apple grower notices that several of his apple...Ch. 21 - Which of the following is NOT used to treat active...Ch. 21 - Vaccines. are similar to viroids are only needed...Ch. 21 - A patient presents at the clinic with an acute...Ch. 21 - Which of the following is not associated with...Ch. 21 - Which statement is true of viroids? They are...Ch. 21 - The first electron micrograph of a virus (tobacco...Ch. 21 - Varicella-zoster virus is a double-stranded DNA...Ch. 21 - Classify the Rabies virus (a rhabdovirus family...Ch. 21 - Why can’t dogs catch the measles?Ch. 21 - One of the first and most important targets for...Ch. 21 - In this section, you were introduced to different...Ch. 21 - Although plant viruses cannot infect humans, what...Ch. 21 - A bacteriophage with a lytic life cycle develops a...Ch. 21 - Why is immunization after being bitten by a rabid...Ch. 21 - The vaccine Gardasil that targets human papilloma...Ch. 21 - Prions are responsible for variant Creutzfeldt...Ch. 21 - How are viroids like viruses?Ch. 21 - A botanist notices that a tomato plant looks...
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- Cells copy DNA to make RNA to make proteins. RNA is the messenger. Why use RNA at all? Why not make proteins directly from the DNA? Speculate on reasons for this.arrow_forwardWhy was the cold ethanol added to the soap and salt mixture? A To digest the cell walls B To dissolve the RNA C To emulsify lipids and remove large cellular debris D To precipitate the DNA E To denature the cytoplasmic proteinsarrow_forwardBased on the given question which of the following choices is the correct answer?A. It becomes inactiveB. Its shape changes to engulf large proteinsC. Its activity increases to digest more proteinsD. It begins to replicatearrow_forward
- For each function, please name the enzyme or ribozyme that performs the function. 1. Transcribes RNA from a DNA template Synthesizes a complementary DNA strand from an RNA template Replicates DNA from a DNA template Replicates RNA from an RNA templatearrow_forwardExplain the process that is depicted by the diagram below. (What is the overall purpose of the process?What kind of organism uses this process? What is the overall significance of this process to life?arrow_forwardStatement A: protein synthesis begins by the unwinding and unzipping of the DNA molecule in the nucleus Statement B: a nucleotide is made up of phosphate groups, nitrogenous bases, and carbohydrates A is true while B is false both statements are true both statements are false A is false while B is truearrow_forward
- A chromosome contains many different gene regions that are transcribed into different ________. a. proteins c. RNAs b. polypeptides d. DNA strandsarrow_forwardWhich statement best describes the manner in which the genetic information is used inside cells? Group of answer choices DNA is converted to RNA, which is then converted to protein. Ribosomes make proteins by randomly linking amino acids together. DNA acts as a messenger. It binds to a ribosome and provides instructions for making protein. Sections of DNA are copied into RNA molecules which serve as the instructions for making proteins.arrow_forwardWhich describes the correct sequence of steps of protein synthesis? Group of answer choices The DNA strand unzips and a complementary mRNA strand is copied. The mRNA travels to the ribosome where tRNA "reads" it and brings the appropriate amino acids indicated by the mRNA strand nucleotide bases. The string of amino acids creates a peptide chain. Multiple peptide chains create a protein. The RNA strand travels to the ribosome where the DNA strand "reads" it and brings the appropriate amino acids indicated by the RNA strand nucleotide bases. The string of amino acids creates a peptide chain. Multiple peptide chains create a protein. The RNA strand unzips and a complementary mRNA strand is copied. The mRNA travels to the ribosome where tRNA "reads" it and brings the appropriate amino acids indicated by the mRNA strand nucleotide bases. The string of amino acids creates a peptide chain. Multiple peptide chains create a protein. The DNA strand travels to the ribosome, where tRNA…arrow_forward
- Create the RNA strand to be synthesized from the DNA double strand below and explain this synthesis, including the functions of the molecules responsible for synthesis. 5-ATCGCTTGTTCGGAA-3 3-TAGCGAACAAGCCTT-5arrow_forwardPlease use the following table to compare DNA, RNA and proten in terms of structures and functions.arrow_forwardWhich statement best describes the manner in which the genetic information is used inside cells? DNA is converted to RNA, which is then converted to protein. DNA acts as a messenger. It binds to a ribosome and provides instructions for making protein. Ribosomes make proteins by randomly linking amino acids together. Sections of DNA are copied into RNA molecules which serve as the instructions for making proteins.arrow_forward
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