B1.1.2

Question 1

What are bacteria?

Answer 1

Bacteria are the smallest living organisms. They are unicellular organisms. All cells can carry out the seven life processes.

Question 1

Cell wall

Answer 1

Made up of peptidoglycan which holds the cell together and protects it

Question 2

Cell membrane

Answer 2

A barrier controlling substances entering and leaving the cell

Question 3

Genetic material

Answer 3

Floats freely in the cytoplasm as one long strand of DNA called bacterial chromosome it’s normally circular.

Question 4

Plasmid

Answer 4

A circular piece of DNA used to store extra genes. These genes are for times of stress for example its where antibiotic resistance is found.

Question 5

Slime capsule

Answer 5

Layer outside the wall protecting bacteria from drying out and from poisonous substances. it also helps bacteria to stick to smooth surfaces

Question 6

Pilli

Answer 6

Tiny hair like structures allowing the cells to attach to structures. They are also used to transfer genetic material.

Question 7

Flagella

Answer 7

Allows the bacteria to move through liquids.