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Flashcards in Monera Deck (15)
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1
Q

Under what circumstances does a bacteria cell form an endospore?

A

When conditions are unsuitable/ lack of food or water

2
Q

Describe briefly how an endospre forms.

A

In unfavourable conditions bacteria can survive forming endospores.
Here cell contents shrink, round up, and form a thick endospore wall inside original cell wall.
The original cell wall then disintegrates,leaving the endospore.
When favourable conditions return, the endospore absorb water, break their walls and reproduce by binary fission.

3
Q

Name two types of heterotrophic nutrition used by bacteria.

A

Either parasitic (live host) or saprophytic (dead matter)

4
Q

Distinguish between batch and continuous flow.

A

Batch- a small amount of organism is added together with fixed amount of sterile nutrient at the beginning
Continous- nutrients are continously fed into the bioreactor and the product is continously removed

5
Q

Distinguish between photosynthetic and chemosynthetic bacteria. Give an example of eacht type

A

photosynthetic - using light - to make food

chemosynthetic - gets energy by using chemical reactions - volcanic pools

6
Q

What are antibiotics?

A

Substance produced by microorganisms to kill harmful bacteria

7
Q

Explain what is meant by antibiotic resistance and suggest how it may develop.

A

Bacteria is not killed by this antibiotic because it is already resistant - natural selection occured

8
Q

What is a possible danger involved in the misuse of antibiotics?

A

Development of highly resistance strengths

9
Q

Name the kingdom to which bacteria belong?

A

Monera

10
Q

Name characteristics of bacteria.

A

Prokaryotic
Have a cell wall
No mitochondria and no plastids
Can be heterotrophic and autotrophic

11
Q

Name the shapes that bacteria is classified in.

A

Cocci - spherical shape ( Streptoccus)
Bacilli - rod shaped (E.coli)
Spiralli - spiral shaped ( syphilis)

12
Q

Name the phases associated with the growth of bacteria.

A
LAG Phase 
LOG Phase
STATIONARY Phase
DECLINE phase 
SURVIVAL phase
13
Q

Name benefits of bacteria.

A

Decompose dead organic matter

Nitrogen fixing bacteria

14
Q

What is the name give to harmful bacterias?

A

Pathogenic bacteria

15
Q

What is the process called when bacteria produce asexually ?

A

Binary fission