Quiz 5 Flashcards

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1
Q

___________ is the name of the genus of gram-positive rod-shaped bacteria used in the production of fermented milk products.

A

Lactobacillus

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2
Q

The genus ___________ contains species of bacteria that divide in three perpendicular planes to yield packets of eight or more cells.

A

Sarcina

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3
Q

Based on metabolism and on oxygen requirements, teh genus Clostridium is classified as ________ and _______.

A

Fermentative, anaerobic

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4
Q

The homofermentative genus of lactic acid bacteria that contains organisms of dairy significance is:

A

Lactococcus

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5
Q

How is Agrobacterium tumefaciens used in biotechnology?

A

It is used to genetically modify plants because it inserts tumor-producing genes into the plant, but the turmor-producing genes are replaced with a gene of interest such as insecticide.

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6
Q

In what types of food are Clostridium botulinum endospores typically found?

A

Vegetables

Home-canned foods

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7
Q

All endospore-forming bacteria are ecologically related because they are found in nature primarily in:

A

soil

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8
Q

How does botulism toxin cause flaccid paralysis?

A

It attacks neuromuscular junction which causes paralysis. The muscles no longer communicate with neurons and death occurs from suffication (paralysis of the diaphragm)

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