Question

QUESTION 26 The original precursor of viruses is unknown. Which of the following is types of virus genomes might a catalytic RNA be a hypothetical candidate precursor: O A double-stranded DNA OB. single-stranded DNA OC.plus-strand RNA OD. minus-strand RNA E. double-stranded RNA QUESTION 27 The final envelope on the progeny virion of herpes simplex virus that exits an infected cell is derived from: A the outer nuclear membrane OB. the endoplasmic reticulum C.the plasma membrane D.a Golgi complex vesicle OE. the inner nuclear membrane

Answer 1

Solution:

26) Catalytic RNA (Ribonucleic acid) are RNA molecules that possesses the enzymtic activity. The structure of Catalytic RNA revealed that they have a Single Stranded RNA.

In a single stranded RNA virus, a Plus strand is one having the same polarity as viral mRNA. A Minus strand is a noncoding Strand that must be copied by RNA polymerase to produce mRNA. So, a Minus Stranded RNA can be a hypothetical candidate precursor.

Hence, Option D, ( Minus Strand RNA ) is the correct answer.

27) Herpes Simplex Virus (HSV), is an infection that causes herpes. Herpes can appear in various parts of the body, most commonly on the genitals or mouth

HSV ncleocapsids has an envelope and this envelope is acquired by budding through the inner membrane of Nucleus. So, we can say that the envelope is acquired by Inner Nuclear Membrane.

Hence, Option E, ( The Inner Nuclear Membrane ) is the correct answer.