NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is a true statement about viruses?
A
They are only spread through person-to-person contact.
B
They can be spread in a number of different ways.
C
All of them are harmful to humans.
D
They can only be spread through exposure to animal waste
Explanation: 

Detailed explanation-1: -All viruses are obligate parasites; that is, they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions.

Detailed explanation-2: -Viruses do not have DNA or RNA.

Detailed explanation-3: -Read the information and list four (4) ways in which viruses can differ from each other. Different families, geonomic makeup, host range, and transmission mechanism.

Detailed explanation-4: -Solution : (d) Viruses are non-cellular, obligate parasites. They have DNA or RNA as genetic material (never both). Genetic material of virus is covered in protein coatm known as capsid. Viruses do not contain their own metabolic system after entrance in them.

There is 1 question to complete.