B1.1.2 - Bacterial Cells Flashcards Preview

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Flashcards in B1.1.2 - Bacterial Cells Deck (16):
1

What are the smallest living organisms?

Bacteria

2

What are unicellular organisms?

They consist of just one cell

3

What are the seven life processes?

Movement
Reproduction
Sensitivity
Nutrition
Excretion
Respiration
Growth

4

How big are bacteria roughly in size?

1 micro meter

5

Name a few examples of prokaryotic cells

Escherichia coli (food poisoning)
Streptococcus (sore throat)
Streptomyces (found in the soil and can create streptomycin)

6

What prokaryotic cell does streptomycin come from?

Streptomyces

7

What subcellular structures do prokaryotic cells contain?

Cell wall
Cell membrane
Cytoplasm
Genetic Material

8

What is the cell wall in prokaryotic cells made out of?

Peptidoglycan

9

What is genetic material?

A long strand of DNA floating in the cytoplasm

10

What is the bacterial chromosome?

A long stand of DNA floating in a cytoplasm of a prokaryotic cell

11

What extra sub cellular structures can some bacterial cells have?

Flagellum
Pili
Slime capsule
Plasmids

12

What does the flagella do?

Helps bacterial cells move

13

What is pili?

Tiny ‘hairlike’ structures that enable the cell to attach to structures.
They can also transfer genetic material between bacteria.

14

What is the slime capsule?

A layer outside the cell that protects bacterium from drying out and from poisonous substances.
It also helps bacteria stick to smooth surfaces.

15

What are plasmids?

A circular piece of DNA used to store extra genes

16

Where are antibiotic resistant genes in a bacterial cell found?

Plasmids