1.2 Organelles Flashcards Preview

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Flashcards in 1.2 Organelles Deck (38):
1

What is the function of nuclear pores?

Allow movement of mRNA out of nucleus

2

What organelles could not be viewed with light microscope

Ribosomes
Golgi
Endoplasmic reticulum
Cytoskeleton, microtubules, microfilaments, centrioles, vesicles, mitochondria

3

How are vesicles moved frome one cell to another?

The cytoskeleton provide structure to move along

Vesicles move along microfilaments

Microtubules extend from cell and are broken down

This uses ATP

4

What is term for single celled organisms

Prokaryotes

5

What is a Eukaryotes

Multicellular organism

Membrane bound organelles

Allow multiple reactions

6

What is role of nucleus

To contain code genetic information

Synthesise proteins

DNA + histone = chromatin

7

Where is genetic info stored

Nucleus

8

What is role of nucleolus

produce ribosomes from proteins and RNA

9

What is role of mitochondria

Respiration site

contain enzyme and DNA

10

What is interior of mitochondria called

Matrix

11

What is folded membrane in mitochondria called

Cristae

12

What is a vesicle

Membrane sacs

13

What is purpose of vesicles

Storage and transport

14

What are lysosomes

specialised vesicles which contain hydrolytic enzymes

15

What are three components of cytoskeleton

1. Microfillaments

2. Microtubules

3. Intermediate fibres

16

What are microfilliaments called

Actin

17

What is role of cytoskeleton

Microfilaments- cell movement

Microtubules - globular proteins which create scaffolding for organelle movement

Intermediate fibres - strength

18

What is role of cillia

Hair like extension which create movement by beating

19

What is structure of cillia

9 + 2 microtubules

20

What is flagella

Whip like structure which create cell mobility and chemical changes

21

What organelles are involved in protein synthesis

Endoplasmic reticulum

Smooth or rough

Ribosomes

Golgi appartus

22

What is role of rough and smooth endoplasmic reticulum

Smooth - carb / lip synthesis

Rough - protein

23

What is role of golgi apparatus

modify and package proteins

24

What are the stages of protein production

1. Protein synthesised in RER

2. Packaged in cisternae to vesicles

3. Move to golgi via microtubules

4. fuse with cis face so protein modified and then leave by trans face

25

What is a plant cell wall made of

Cellulose

26

What is the vacuole

A membrane sac filled with sap

27

What is role of vacuole

To maintain turgor

28

What is role of chroloplast

Photosynthesis

29

What is structure of chloroplast

Double membrane

Inside fluid - stroma

Thylakoid which join to make granum

Granum joined lamellae

30

What are examples of prokaryotes

Archae and Bacteria

31

How is DNA present in prokaryotes

Free floating or super coiled into chromosomes

32

What are genes grouped into in bacteria

Operons

33

What size are ribosomes in prokaryotes

70s

34

What is cell wall made of in bacteria

Peptidoglycan

35

What is peptidoglycan made of

Amino acid and sugar

36

Where does energy come from for flagella in bacteria

Chemiosmosis

37

What is flagella composed of

Basal body and molecular motor

38

How do prokaryotes produce

Reproduce by binary fission