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Introduction: Capsid is a covering made up of small protein subunits called capsomeres. These capsomeres are arranged in a specific pattern over the virus. It provides protection to the virus.
Answer to Problem 1TY
Correct answer: Capsid is the protein coat that surrounds the genetic material of the virus. Hence, the correct answer is option c.
Explanation of Solution
Reason for correct answer:
Option c. is given as “capsid”.
The capsid is the protein structure arranged over the virus. It provides protection to the genetic material of the virus. Hence, the correct answer is option c.
Reasons for the incorrect answer:
Option a. is given as, “host”.
It is the organism which is invaded by a virus or a bacterium. For bacteriophage, the host organism is bacteria. Hence, option a. is incorrect.
Option b. is given as, “prion”.
A prion is a form of infectious protein molecule. They do not have
Option d. is given as, “viroid”.
A viroid is a small single-stranded infectious nucleic acid and does not possess any protein coat. Hence, option d. is incorrect.
Option e. is given as, “capsule”.
The capsule is the proteinaceous covering present on the surface of bacteria and not viruses. Hence, the option e. is incorrect.
Hence, the options a., b., d., and e. are incorrect.
Sometimes, the capsid present in viruses can also have an envelope. The envelope contains proteins for penetration and entry into the host. The capsid is made up of capsomeres and it protects the genetic material of the virus.
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Chapter 19 Solutions
BIOLOGY
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