Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Fundamentals Of Life Science > Microbial Cell structure > Flashcards

Microbial Cell structure Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is the role of the capsid?

A

allows protection against adverse conditions including desiccation and the immune system
Contributes to invasiveness
Reduces opsonisation
Protection from phagocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the capsid made out of?

A

Polysaccharide gel - high in water content

Single sugar polymerised

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the glycocalyx?

A

loose meshwork of fibrils extending outward from the cell, plays a major role in bacterial adherence to surfaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the two types of bacteria?

A

Gram positive

Gram Negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the structure of a Gram negative bacterial cell wall?

A

Out lipopolysaccharide membrane
thinner peptidoglycan cell wall
Cell membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the structure of a Gram positive bacterial cell wall?

A

Thick peptidoglycan cell wall followed by the cell membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What turns pink in a gram stain reaction?

A

gram negative bacteria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What turns purple in a gram stain reaction?

A

gram positive bacteria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Describe the bacterial chromosome

A

a single long continuous circular double stranded DNA molecule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the other way that bacteria store their DNA

A

plasmids

often code for things such as antibiotic resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is special about plasmids?

A

they can be lost or gained without causing damage to the bacterial cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the basic structure of a prokaryote?

A 
Capsule
Cell wall
membrane
surface proteins
naked DNA
ribosomes
Flagellum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What shape are Coccus bacteria?

A

Round

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What shape are Bacilus bacteria?

A

Rod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the cell walls of bacteria made up of?

A

Peptidoglycan

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does peptidoglycan consist of?

A

Two sugar polymers:
N-acetyl glucosamine
N-acetylmuramic acid

17
Q

What are the cell wall crosslinks between in a gram negative bacteria?

A

DAP and D-Ala

18
Q

What are the cell wall crosslinks between in a gram positive bacteria?

A

l-Lys to 5x Gly to D-Ala

19
Q

What are the role of fimbriae?

A

Involved in adherence to surfaces

No fimbriae = No disease

20
Q

What is Type 1 fimbriae?

A

Expressed by Gram negative bacteria
Highly inflammatory
Bind to macrophages, neutrophils, mast cells, T/B lymphocytes

21
Q

What is P-fimbriae?

A

Bind to Gal

Functional mimic of normal TNF pathway

22
Q

What is the structure of flagella?

A

Helically shaped made of flagellin
Polar at one end
Base has a hook structure that connects to motor

23
Q

What is the function of flagella?

A

Energy provided by protonmotive force to use the flagella for chemotaxis

24
Q

What is the nuclear area of a prokaryote like?

A

Contains a single long continuous circular dsDNA molecule

Fundamentals Of Life Science (26 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions