Bacteria

Question 1

type of DNA

Answer 1

Circular DNA cromosomes

-> contains extra DNA in PLASMIDS

Question 2

Cell wall

Answer 2

made of peptidoglycan -> Amino acids and sugars

Question 3

Many moves through a

Answer 3

flagellum that propels bacteria through a medium

Question 4

Reproduces through

Answer 4

Binary fission (like mitosis), all cells are haploid
-> Asexual reproduction

Question 5

Transfers DNA to same generation through

Answer 5

Horizontal gene transfer

• > process called conjugation, where a puilus (conection tube) Forms and a plasmid is copied
• > commonly used to develop antibiotic resistance

Question 6

Proteobacteria

Answer 6

is a phylum where all bacterial pathogens occur, but not all are pathogens
-> Some alow for Nitrogen fixation

Question 7

Gram +’ve vs Gram -‘ve

Answer 7

based on the gram test that determines their type of cell wall
+‘ve -> Smooth thick wall of peptidoglycan

-‘ve -> Petopglycan wall sandwiched between porans, and is rougher (more resistant to antibiotics)

Question 8

Actinomycetes

Answer 8

gram =’ve bacteria, crucial in soil systems

Question 9

The life cycle of Myxobacteria

Answer 9

1) Cells living independently having fun (vegetative)
2) with stress in the ENV, the cells aggregate
3) aggregate in a mound
4) creates a fruited body
5) fruited bodies burst and release myxospores
6) cell’s “wake up” when conditions become good again and this life cycle circles

Question 10

Metabolism of bacteria

Answer 10

Mostly producers or decomposers