Science 7 Chapter 6 Review

Some bacteria have a small circular strand of DNA separate from their main chromosome called a...

(HINT: See pg. 121 in your textbook.)

• nucleus

• plasmid

• capsule

• flagella

Some bacteria have a whip-like structure called a ____ that they use to move.

(HINT: See pg. 121 in your textbook.)

• nucleus

• plasmid

• capsule

• flagella

The two groups of prokaryotes are ____ and ____ .

(HINT: See pg. 122 in your textbook.)

A bacterium would likely form an endospore when conditions make it ____ for the bacterium to survive.

(HINT: See pg. 123 in your textbook.)

• easy

• difficult

Tags

NGSS.MS-LS1-5

The protective protein coat of a virus is called a...

(HINT: See pg. 127 in your textbook.)

Instead of a nucleus, viruses have a...

(HINT: See pg. 127 in your textbook.)

Scientists discover something that is very small and has DNA and ribosomes. It is...

(HINT: See pgs. 121 & 127 in your textbook.)

• a small bacterium

• a small virus

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

During binary fission, the DNA in the chromosome and in the plasmids is ____ . The cell membrane then pinched to form ____ .

(HINT: See pg. 123 in your textbook.)

Nitrogen-fixing bacteria helps plants by...

(HINT: See pg. 124 in your textbook.)

• capturing sunlight for the plant

• producing nitrogen to enrich the air around the plant

• breaking down plat cells to release stored nutrients

• transforming nitrogen from the air into a form that plants can use

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

How do decomposers benefit the environment?

(HINT: See pg. 124 in the textbook.)

Tags

NGSS.MS-LS2-3