Anatomy Of The Eukaryotic Cell Flashcards
0
Q
Prokaryotes do have
A
Cytoplasm Dna Ribosomes Plasma membrane Cell wall
1
Q
Prokaryotes dont have
A
- a nucleus
- membrane organelles
2
Q
Nucleus
A
- stores DNA
- site of transcription
- surrounded by nuclear envelope through which pores regulste traffic of large molecules
- contains the nucleolus
3
Q
Nuclear envelope
A
- surrounds nucleus
- 2 bilayers
4
Q
Nucleolus
A
- Dark spot in nucleus
- site of rRNA synthesis
5
Q
Ribosomes
A
- translation of mRNA into proteins occurs here
- found in cytoplasm and the roughER
- present in prok and euk
6
Q
Rough ER
A
- has ribosomes
- involved in synthesis and glycosylation of peptides to form glycoproteins destined for secretion or integration into the membrane
7
Q
Smooth ER
A
- no ribosomes
- synthesis of lipids (membrane) and hormones often for export from the cell
- breakdown of toxins in liver cells
8
Q
Golgi apparatus
A
- Packaging and shipping
- recieves proteins from rough ER
- modification (glycosylation) and packaging of proteins into vesicles for secretion or transport to cellular destinations
9
Q
Mitochondria
A
- site of ATP synthesis by ATP synthase
- gets energy for ATP synthase by oxidative phosphorylation (PDC Krebs and electron transport chain)
- site of beta oxidation (fatty acid catabolism)
- have their own circular DNA and ribosomre for self-replication
10
Q
Cristae
A
- in the mitochondria
- causes more surface are
11
Q
Mitochondrial matrix
A
- krebs cycle
- pdc
12
Q
Intermembrane space
A
E transport chain pumps protons from matrix to here making ATP
13
Q
Lysosomes
A
- contain acid hydrolase (digestive enzymes)
- have pH 5
- degradation of old organelles or phagocytosed materials
- produced from the golgi aparatus
- not present in plant cells
14
Q
Peroxisomes
A
- involved in the breakdown (involving hydrogen peroxide) of many substances including fatty acids, amino acids, and various toxins
- carry out the glyoxalate cycle in germinating plant seeds
