Virus

Which of the following correctly describes viruses?

• non-living because they grow and develop
• living because they can use energy
• non-living because they cannot reproduce on their own
• living because they can maintain homeostasis

Which of the following best describes the overall structure of viruses?

• An outer protein coat and nucleic acid within the core.
• An outer carbohydrate coat and nucleic acid within the core.
• A protein tail and carbohydrate tail fibers.
• A carbohydrate tail and protein tail fibers.

HIV demonstrates that viral infections are harmful to host organisms because –

• viruses digest nutrients for energy that would have been used by host cells

• the proteins in viral capsids interfere with the enzymes that produce antibodies

• host cells are damaged during the production of new virus particles

• viruses produce harmful toxins that interfere with the cells energy conversions

Tags

NGSS.MS-LS3-1

NGSS.MS-LS1-2

What type of cell does HIV attack?

• neurons (brain cells)

• liver cells

• stomach cells

• Helper T cells (white blood cells)

What body system do all types of T cells (white blood cells) belong to?

• Integumentary system

• Immune system

• Endocrine system

• Circulatory system

What syndrome does HIV lead to?

• accompanied infection dehydration syndrome

• acute integumentary dignified syndrome

• agility immune deterrent syndrome

• acquired immune deficiency syndrome

What happens in the lysogenic cycle? 

• Virus goes in and leaves the host cell
• Virus quickly kills the host cell
• Virus inject the nucleic acid into the host cell, and the nucleic acid integrates into the host cell DNA, and stay dormant for a long time
• Bacteria injects DNA into a host cell

Tags

NGSS.MS-LS3-1

Viruses are cells. 

• True 
• False

Tags

NGSS.MS-LS1-1

HIV is an example of which type of virus?

• Lysogenic
• Bacterial
• Lytic
• None of the above

Sometimes viruses have an extra protective layer called the...

• capsid

• a fur coat

• membrane envelope

• cell membrane