Biology: Science for Life with Physiology (5th Edition)
Biology: Science for Life with Physiology (5th Edition)
5th Edition
ISBN: 9780321922212
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 13, 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.
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