Biological Science (7th Edition)
Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 33, Problem 1TYK

What do host cells provide for viruses?

a. ATP

b. nucleotides and amino acids

c. ribosomes

d. all of the above

Expert Solution & Answer
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Summary Introduction

Introduction:

The viruses are small biological infectious agents that can replicate inside the cells of other living organisms only. They are simple particles that require a host cell to replicate and survive.

Answer to Problem 1TYK

Correct answer:

The host cells provide ATP (adenosine triphosphate), nucleotides, amino acids, and ribosomes to the viruses for their growth and development.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) is given as all of the above. They cannot make their own ATP, nucleotides, amino acids, and ribosomes. The virus cannot synthesize their own proteins. The virus enters the host cell to survive. The host cell provides the energy (ATP) to the viruses inhabiting in it. It also provides nucleotides for nucleic acid synthesis, and amino acids and ribosomes for the protein synthesis in the viruses. Hence, Option (d) is correct.

Explanation for the incorrect answer:

Host cell provides all the three entities ATP, nucleotides, and amino acids for viral growth and development. It does not provide solely ATP, nucleotides and amino acids, and ribosomes. Hence, all the three options (a), (b), and (c) are incorrect.

Conclusion

Therefore, it can be concluded that the host cells provide energy, proteins, nucleotides, ribosomes, and amino acids to the viruses for their development and growth.

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Regarding enveloped viruses, which of the following is true of the viral envelope? A. It has the same structure as a cell wall B. It is resistant to soaps/detergents C. It is composed of capsid proteins D. It is a phospholipid bilayer derived from a membrane of its host cell 42.
Viruses may include of any of the following structures, EXCEPT: a. DNA   b. ribosomes   c. capsids   d. viral envelopes   e. RNA
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