Biology
Viruses
Grade 10 · High School
Answer every question first, then press Finish to see your score and explanations.
- Question 1 of 20Easy
Viruses are classified as obligate parasites because ...
- Question 2 of 20Easy
The genetic material of a virus may be ...
- Question 3 of 20Easy
The protein coat that encloses a virus's genetic material is called the ...
- Question 4 of 20Easy
The science that studies viruses is called ...
- Question 5 of 20Easy
The first virus discovered by Dmitri Ivanovsky was ...
- Question 6 of 20Easy
The size of a virus is very small, about ...
- Question 7 of 20Medium
The tobacco mosaic virus (TMV) has a ... shape.
- Question 8 of 20Medium
A bacteriophage is a virus that attacks ...
- Question 9 of 20Medium
The first stage of the lytic cycle, when a virus attaches to host cell receptors, is called ...
- Question 10 of 20Medium
In the lysogenic cycle, viral DNA integrates with bacterial DNA to form a ...
- Question 11 of 20Medium
The stage of the lytic cycle when the bacterial cell wall bursts and new viruses are released is called ...
- Question 12 of 20Medium
Viruses reproduce by ...
- Question 13 of 20Medium
The virus that attacks the human immune system is ...
- Question 14 of 20Medium
Dengue fever is transmitted through the vector ...
- Question 15 of 20Hard
The main difference between the lytic and lysogenic cycles lies in ...
- Question 16 of 20Hard
A vaccine provides immunity by ...
- Question 17 of 20Hard
The lytic-cycle phase in which viral DNA directs bacterial DNA to make new viral parts is called the ... phase.
- Question 18 of 20Hard
The feature that distinguishes a virus from a living cell is ...
- Question 19 of 20Hard
An example of a virus that can trigger cancer in humans is ...
- Question 20 of 20Hard
Viruses are hard to kill with drugs without harming the host cell because ...