9A Flashcards

0
Q

What is the major characteristic of the Archaebacteria and the Eubacteria?

A

The contain ONLY prokaryotic organisms which means they do NOT have a true nucleus with a membrane surrounding the genetic material and the organelles are not surrounded by a membrane

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1
Q

List three ways that archaebacteria are different from eubacteria

A
  • archaebacteria’s cell walls lack a certain compound
  • parts of archaebacteria’s DNA are more similar to eukaryotes than to other bacteria
  • many archaebacteria live in extreme environments
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2
Q

What are the three shapes bacteria can have

A

Sperical ,called coccus
Rod-shaped ,called bacillus
Spiral ,called spirillum

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3
Q

Do all bacteria have a cell membrane

A

Yes

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4
Q

What are three things bacteria need to survive

A

A great deal of food, they need oxygen to I grow, they need a specific temperature to live in

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5
Q

List three human foods that bacteria help produce

A
  • yogurt
  • cheese
  • dill pickles
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6
Q

What is a virus made of

A

A nucleic acid core with protein coat

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7
Q

Why is the virus not classified into a kingdom

A

It doesn’t have a cell membrane

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8
Q

What are two things that can protect your body from viruses

A

Vaccinations, good hygiene

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9
Q

Like all cells bacteria is surrounded by what

A

A cell membrane a cell wall and a capsule

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10
Q

True or false: bacteria are Prokaryotic?

A

True

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11
Q

The action of a virus is called what

A

Lytic cycle

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12
Q

How do bacteria reproduce?

A

Binary fission

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12
Q

What do all bacteria have?

A

Cell membrane

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13
Q

What is a latent virus?

A

A virus that remains inactive inside a host cell

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14
Q

Are viruses living organisms?

15
Q

What is a coccus?

A

Spherical bacteria

16
Q

Give two examples of decomposed organisms?

A

Bacteria and fungi

17
Q

What two kingdoms contain prokaryotic organisms?

A

Archaebacteria and Eubacteria

18
Q

Do most bacteria cause disease in humans?

A

Although many do cause human diseases most do not. They are important decomposed organisms breaking down dead organic material to return nutrients to the food chain

19
Q

Does antibiotic resistant bacteria support evolution?

20
Q

What does prokaryotic mean?

A

There is no true nucleus with a membrane surrounding it and organelles are not surrounded by a membrane. Genetic material is clumped together in a nuclear area

21
Q

How do most bacteria move?

A

With flagella

22
Q

What is Cyanobacteria?

A

Eubacteria that resembles algae because of its blue green color

23
What is binary fission?
DNA is doubled by DNA replication. The cell membrane then pinches in two until the cell splits causing two daughter cells.
24
If bacteria grow so quickly why don't they cover the whole earth?
Because they need very specific conditions to grow in. Lack of food or water, insufficient oxygen and waste build up prevent colonies from getting too big.