CELL STRUCTURE : PRO + EUKARYOTES Flashcards
1
Q
Prokaryotes
A
Organisms whose cells lack a nucleus & other organelles.
e.g. bacteria
2
Q
Prokaryotes labels
A
Cell wall
Mesosome
Capsule
Cytoplasm
Bacterial flagellum
Plasma membrane
DNA - nucleoid
Ribosomes
- No membrane bound organelles
- No nucleus, has nucleoid region
- Small ribosomes in cytoplasm
- Cell wall made of peptidoglycan
- Capsule, sticky layer to aid attachment
- Mesosome, site of respiration
3
Q
Eukaryotes
A
Contains membrane bound organelles
4
Q
Cell/plasma membrane
A
- separates the cell from surrounding cells/tissue fluid
- allows different processes to occur in different organelles
phospholipid bilayer
5
Q
Nucleus
A
- contains DNA which codes for protein synthesis
- site of DNA replication
6
Q
Nuclear pore
A
- allows mRNA to be transported out of the nucleus
7
Q
Nucleolus
A
- produces rRNA, tRNA & ribosomes
8
Q
Nuclear envelope
A
- separates nucleus from surrounding cytoplasm
9
Q
Mitochondria/on
A
- site of ATP synthesis by aerobic respiration
- outer/inner membrane
- intermembrane space
- matrix
- cristae
CUT IN A DIFFERENT PLANE OF ANGLE OR DIFFERENT STAGE OF GROWTH
10
Q
Rough endoplasmic reticulum (RER)
A
- packaging & storing of proteins
- producing transport vesicles that merge to form golgi body
11
Q
Ribosomes
A
- site of protein synthesis, converts mRNA to proteins
12
Q
Smooth endoplasmic reticulum (SER)
A
- produce, package & transport steroids & lipids
13
Q
Golgi body
A
- modifies & packages proteins
e.g. carbohydrate chains form glycoprotein
14
Q
Centrioles
A
- form the spindle during cell division (not present in some plant cells)
- always come in pairs
15
Q
Lysosomes
A
- contains digestive enzymes to breakdown worn out cells & organelles
- involved in digestion during photosynthesis
