Unit 1A-Evolution

Which viral life cycle kills its host cell by lysing?

• lytic
• mitosis
• lysogenic
• S phase

Which viral life cycle allows viral genetic material to lay dormant while the host cell reproduces?

• lytic
• mitosis
• lysogenic
• S phase

Viruses are...

• prokaryotic
• eukaryotic
• non-living
• endospores

One reason that viruses are considered to be nonliving is that they are not made of ______.

• protein
• viruses
• bacteria
• cells

Tags

NGSS.MS-LS1-1

What do viruses have in common with living cells? They both...

• store genetic information
• have chloroplasts
• use glucose for cellular respiration
• have endoplasmic reticulum

Tags

NGSS.MS-LS3-1

How could you describe the size of a virus?

• Smaller than bacteria
• Larger than a parasite
• About the size of a dime
• Smaller than a proton

One scientific hypothesis about the origin of life holds that ____.

•  proteins that duplicate themselves came to function in information storage.
• RNA replaced DNA as the most stable information-storing molecule.
•  as cells evolved, they stopped using RNA entirely.
•  RNA existed before DNA.

Examples of fossils include preserved ______.

• body parts.
• footprints.
• eggs.
• all of these

To be useful as an index fossil, a species must have existed for a ____.

• short period over a small geographic range. 
• long period over a small geographic range.
•  short period over a wide geographic range.
•  long period over a wide geographic range.

A viral capsid functions to ____.

• transcribe viral genes.
• bind the virus to the surface of a host cell.
•  destroy a host cell.
•  force a host cell to make copies of the virus.