Pearson eText Biology: Science for Life -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135214084
Author: Colleen Belk, Virginia Maier
Publisher: PEARSON+
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Chapter 14, Problem 9LTB
Summary Introduction
Introduction:
Viruses are the organic entities that connect with living organisms, but they're not alive themselves. Viruses are regarded as non-living because they cannot maintain homeostasis and are unable to grow or reproduce without other organism's assistance.
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How is the entry (penetration) of an animal virus into its host cell similar or
different to the entry of a bacteriophage into its host cell?
The entire viral particle (capsid and genome) can penetrate an
animal cell, while only the viral genome can penetrate a bacterial
cell.
There is no difference; the entire viral particle (capsid and
genome) penetrates both cell types.
There is no difference; only the viral genome penetrates both cell
types.
The viral genome can penetrate an animal cell, while the entire
viral particle (capsid and genome) penetrates a bacterial cell.
Select all the following statements that are TRUE regarding viruses:
□ All viruses are potentially dangerous to humans because any virus can infect any host.
□ Viruses are fastidious pathogens that require complex growth media.
□ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles.
□ Viruses are genomes made of RNA and DNA that lack many protein.
□ Viruses can infect all other known life forms on earth, from Archaea to humans.
Which of the following is a similarity between viruses of bacteria (bacteriophages) and viruses of algae?
These viruses will enter host cells by membrane fusion.
They infect host cells by injecting nucleic acid (i.e., capsid does not enter cell)
After replication in a host cell, the newly-assembled viruses will exit the cell by budding.
These viruses are taken into host cells by phagocytosis.
Chapter 14 Solutions
Pearson eText Biology: Science for Life -- Instant Access (Pearson+)
Ch. 14 - How many different species have been identified by...Ch. 14 - Add labels to the figure that follows, which...Ch. 14 - How are hypotheses about the evolutionary...Ch. 14 - Which of the following kingdoms or domains is a...Ch. 14 - Comparisons of ribosomal RNA among many different...Ch. 14 - On examining cells under a microscope, you notice...Ch. 14 - The mitochondria in a eukaryotic cell ___________....Ch. 14 - Prob. 8LTBCh. 14 - Prob. 9LTBCh. 14 - Phylogenies are created based on the principle...
Ch. 14 - Unless handled properly by living systems, oxygen...Ch. 14 - Imagine you have found an organism that has never...Ch. 14 - Support for the endosymbiotic theory for the...Ch. 14 - Research a species of plant, animal, fungi, or...Ch. 14 - Scientists initially rejected the endosymbiotic...Ch. 14 - The science that you learned in this chapter has...
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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 of the following highly contagious viruses is a single-stranded ribonucleic acid (RNA) virus with a helical capsid and envelope and is transmitted by coming in contact with respiratory secretions? "This is a highly contagious respiratory illness transmitted when an infected person coughs or sneezes virus particles into the air," the health department said in a written statement. "It's so contagious that if one person is sick and spreading measles, nine out of 10 people around them who aren't immune will get it, too." Group of answer choices a. Measles b. Parvovirus c. Coxsackie virus A d. Rhinovirusarrow_forwardWhich of the following is one way a virus can enter the host cell? Depending on the type of virus, each of the choices is a potential entry mechanisms. A virus can gain entry by fusing its membrane with the host cell's membe to transfer its genome into the host cell. A virus can gain entry by injecting its genome into the host cell. A virus can gain entry by fusing with the host cell's membrane so that the entire virus enters the host cell.arrow_forwardWhich one of the following is not true for virus, obligate intracellular parasites? Viruses cannot generate energy outside of cells Viruses cannot synthesize proteins outside of cells Enveloped viruses require host cell membrane to obtain their envelopes Viruses must degrade host cell DNA in order to obtain nucleotidesarrow_forward
- Which of the following statements is TRUE concerning viral envelopes? Only viruses with envelopes have their contents enclosed by a layer containing lipids Only viruses without envelopes interact with receptor proteins on the surface of the host cell. Only viruses without envelopes can release their genetic material into the cytoplasm of the host. Only viruses with envelopes package their genetic material by engulfing it.arrow_forwardSelect all the correct statement(s) about viruses: Viruses exist in one phase both extracellularly and intracellularly Some viruses are non-obligate parasites Any viral genome can be directly translated by the host cell's translation machinery Viruses can be classified based on their nucleic acid and shapearrow_forwardWhy are viruses NOT considered living organisms? They are not composed of cells They cannot reproduce on their own They have no nucleus all of the abovearrow_forward
- For a virus to transform a cell, which of the following events must occur: Group of answer choices Cytopathic effects must take place Virion production must be robust All answers are correct The cell must continue to divide The entire viral genome must always be integrated into host DNAarrow_forwardHow common is ABV in the USA? In the United States, over half of adults have been infected with ABV by age 40. Once ABV is in a person's body, it stays there for life and can reactivate. Match terms with descriptions based on the text above. You can use an answer more than once or not at all. "Over half of adults have been infected with ABV by age 40." ABV could belong to this group of viruses: A. Human Papilloma Viruses B. Incidence of ABV C. Herpesviruses D. Prevalence of ABV by age 40arrow_forwardWhich of the following self-replicating biological agents carries only one polynucleotide chain as its genetic material, does not code for any proteins, and does not have any nucleocapsid? the RNA virusoid known as hepatitis delta virusoid the single-stranded RNA virus known as human immunodeficiency virus the double-stranded RNA virus known as rotavirus the double-stranded DNA virus known as pandoravirus the RNA viroid known as citrus exocortis viroid The human precancerous disorder known as xeroderma pigmentosum is caused by which of the following mutagenic conditions? thymine dimers demethylation deacetylation depurination deamination 7. Who discovered that DNA synthesis in the intact chromosomes of rapidly-growing bacterial cells is continuous on the leading strand, but discontinuous on the lagging strand? Rosalind Franklin and Maurice Wilkins Matthew Meselson and Franklin Stahl Erwin Chargaff and Arthur Kornberg Reiji Okazaki and Tuneko Okazaki James Watson and…arrow_forward
- Arrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA integrated into host DNA 2.viral proteins synthesized on host ribosomes 3. viral DNA uses host enzymes to transcribe viral RNA 4. reverse transcriptase catalyzes synthesis of ssDNA 5. synthesis of second DNA strand (a) 5, 2, 1, 3, 4 (b) 5, 2, 3, 4, 1 (c) 4, 5, 1, 3, 2 (d) 4, 1, 2, 3, 5 (e) 2, 1, 3, 4, 5arrow_forwardIf an animal virus does not lyse the host cell and does not produce symptoms, it is best described as morbid. chronic. latent. non-infectious.arrow_forwardWhich of the following is NOT a characteristic of viruses? they are smaller than prokaryotic cells Othey are acellular (no cellular structure) they are obligatory parasites. Othey are visible with a light microscope Savedarrow_forward
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