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Flashcards in Anatomy Of The Eukaryotic Cell Deck (19):
0

Prokaryotes dont have

-a nucleus
-membrane organelles

1

Prokaryotes do have

Cytoplasm
Dna
Ribosomes
Plasma membrane
Cell wall

2

Nucleus

-stores DNA
-site of transcription
-surrounded by nuclear envelope through which pores regulste traffic of large molecules
-contains the nucleolus

3

Nuclear envelope

-surrounds nucleus
-2 bilayers

4

Nucleolus

-Dark spot in nucleus
-site of rRNA synthesis

5

Ribosomes

-translation of mRNA into proteins occurs here
-found in cytoplasm and the roughER
-present in prok and euk

6

Rough ER

-has ribosomes
-involved in synthesis and glycosylation of peptides to form glycoproteins destined for secretion or integration into the membrane

7

Smooth ER

-no ribosomes
-synthesis of lipids (membrane) and hormones often for export from the cell
-breakdown of toxins in liver cells

8

Golgi apparatus

-Packaging and shipping
-recieves proteins from rough ER
-modification (glycosylation) and packaging of proteins into vesicles for secretion or transport to cellular destinations

9

Mitochondria

-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

Cristae

-in the mitochondria
-causes more surface are

11

Mitochondrial matrix

-krebs cycle
-pdc

12

Intermembrane space

E transport chain pumps protons from matrix to here making ATP

13

Lysosomes

-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

Peroxisomes

-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

15

Centrioles

-source of the spindle apparatud used for cell division (act as a microtubule organizing center MTOC)
-not present in plant cells

16

Vacuoles

-fluid filled membrane-bound vesicles used for transport, storage of nutrients and other substances
-pump excess water out of cell
-cell rigity in plants

17

Chloroplasts

Site of photosynthesis in plant cells

18

Plant cell vs animal cells

Animal: have lysosomes and centrioles.. Not present in plant cells

Plant: have cell walls, chloroplasts and a central vacuole.. Not present in animal cells