PROKARYOTIC CELLS (BIOLOGY UNIT 1) Flashcards
Unit 1 (10 cards)
1
Q
WHAT ARE PROKARYOTIC CELLS
A
single organisms with no membrane bound organelles e.g. bacteria
2
Q
PARTS OF PROKARYOTIC CELLS
A
1.Nucleoid
2.Ribosomes
3.Slime capsule
4.Cell wall
5.Plasmids
6.Peptidoglycan
3
Q
NUCLEOID
A
single circular length of DNA
4
Q
RIBOSOMES
A
makes proteins (70s)
5
Q
SLIME CAPSULE
A
- polysaccharide layer outside cell wall
- prevents cell wall from drying out
6
Q
CELL WALL
A
long chain molecules made of sugar and amino acids
7
Q
PLASMIDS
A
- double stranded DNA in a circular structure
- additional genes that aid in survival
8
Q
PEPTIDOGYCLAN
A
- what cell wall is made from
- made from sugars and amino acids
- in gram test they absorb the stain
9
Q
GRAM POSITIVE
A
- do not have an outer membrane
- have thick peptidoglycan to absorb stain
- PURPLE
10
Q
GRAM NEGATIVE
A
- cell wall has an outer membrane and thick cell wall
- do not retain the stain
- PINK
