Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 21RQ
Which statement is true of viroids?
- They are single-stranded RNA particles
- They reproduce only outside of the cell
- They produce proteins
- They affect both plants and animals.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Which statement is true of viroids? a. They are single-stranded RNA particles. b. They reproduce only outside of the cell. c. They produce proteins. d. They affect both plants and animals
HIV is a retrovirus what does this mean?
A. That is a DNA virus and it must make RNA before it can make proteins.
B. That it is an RNA virus and must convert its genetic material to DNA once it enters a cell.
C. That is was a virus discovered in the recent past
D. That is an RNA virus and goes directly to ribosomes of host cells to reproduce
Please explain your answer!
Which statement is true?
A virion contains DNA and RNA.
Viruses are acellular.
Viruses replicate outside of the cell.
Most viruses are easily visualized with a light microscope.
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...
Additional Science Textbook Solutions
Find more solutions based on key concepts
When you start the engine of your car with the transmission in neutral, you notice that the car rocks in the op...
College Physics
Distinguish between microevolution, speciation, and macroevolution.
Campbell Essential Biology (7th Edition)
1. Which is a function of the skeletal system? (a) support, (b) hematopoietic site, (c) storage, (d) providing ...
Anatomy & Physiology (6th Edition)
With respect to angiosperms, which of the following is incorrectly paired with its chromosome count? (A) eggn (...
Campbell Biology (11th Edition)
How can the freezing of water crack boulders?
Campbell Biology in Focus
Match the following examples of mutagens. Column A Column B ___a. A mutagen that is incorporated into DNA in pl...
Microbiology: An Introduction (13th Edition)
Knowledge Booster
Learn more about
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
- Which statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses replicate outside of the cell. d. Most viruses are easily visualized with a light microscope.arrow_forward________ can have a genome of either RNA or DNA. a. Bacteria b. Eukaryotes c. Viruses d. Archaeaarrow_forwardWhich of these is true of prions?a. They are small RNA viruses.b. They replicate in the nucleus.c. They lack protein.d. They cause death of brain cells.arrow_forward
- The 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_forwardViruses display many of the characteristics of living organisms. In particular, they reproduce, creating new virus particles. During reproduction, viruses make copies of their genetic material, and some of the copies contain mutations that are beneficial to the virus. For example, HIV (human immunodeficiency virus), the virus that causes the disease AIDS (acquired immunodeficiency syndrome) mutates so often that its surface proteins change faster than we can develop antiviral drugs. New drug-resistant strains of HIV are appearing constantly. However, viruses can reproduce only after entering a living cell of an organism, because viruses hijack the cell’s machinery and use it to produce new viruses. Where does that combination of characteristics place viruses on the scale of nonlife to life? Are viruses living organisms? Nonliving? If neither of those categories fits the properties of viruses, how should they be classified?arrow_forwardWhich statement best describes why antifungal treatments may have side effects to our own cells? A. Fungal cells and human cells both have cells walls made of cellulose B. Fungal cells and human cells both reproduce by budding C. Fungal cells and human cells both have flagella for movement D. Fungal cells and human cells both have a nucleus, 80s ribosome, and multiple shared organellesarrow_forward
- Some______ enter and replicate inside human cells. a. apicomplexans c. trypanosomes b. water molds d. ciliatesarrow_forwardViruses are considered nonliving because Select one: A. They do not locomote. B. They can reproduce independently. C. Their nucleic acid does not code for protein. D. They are noncellular.arrow_forwardVirology:Some viruses replicate better in hypoxic (low oxygen) environment of cancer cells .TRUE OR FALSEarrow_forward
- You observe a virus infect and insert its DNA into a cell. A few days later you look at the sample and notice the cell reproduced but there is no visual presence of the virus. What type of cycle occurred? Analyze and discuss what happened here, how the virus could become active and provide an example of a virus that can do thisarrow_forwardConjugation differs from sexual reproduction because conjugation Group of answer choices transfers DNA horizontally, to cells in the same generation transfers DNA vertically, to new cells replicates DNA transfers DNA horizontally, to the offpringarrow_forwardViruses consist of either DNA or RNA wrapped inside a protein coat. Are viruses considered alive? A. Yes, because they contain DNA. B. Yes, because they contain DNA and proteins. C. No, because they lack carbohydrates and lipids. D. No, because some viruses use RNA as the main genetic molecule.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology - Intro to Cell Structure - Quick Review!; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=vwAJ8ByQH2U;License: Standard youtube license