EUKARYOTIC CELLS AND ORGANELLES Flashcards Preview

BIOLOGY - CELL STRUCTURE AND DIVISION > EUKARYOTIC CELLS AND ORGANELLES > Flashcards

Flashcards in EUKARYOTIC CELLS AND ORGANELLES Deck (86)
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1

What is the ultrastructure of the cell

the internal structure of the cell that suits it for its job

2

What organelles are found within eukaryotic cells (11)

1) nucleus
2) mitochondria
3) chloroplast
4) endoplasmic reticulum
5) golgi apparatus
6) lysosomes
7) ribosomes
8) cell wall
9) vacuole
10) golgi vesicle
11) cell vacuole

3

What organisms are eukaryotic cells found in

animals, plants, fungi, algae

4

What organelle are found in animal cells (11 points)

1) plasma membrane
2) rough endoplasmic reticulum
3) nucleous
4) nucleus
5) smooth endoplasmic reticulum
6) lysosome
7) ribosome
8) golgi apparatus
9) cytoplam
10) nuclear envolope
11) mitochondria

5

What do plant cells have that animal cells dont

1) cellulose cell wall
2)plasmodesmata
3) vacuole
4) chloroplasts

6

What cells do algae cells have the same organelle as

plants

7

What are the differences between plant cells and fungal cells (2 points)

1) cell walls are made chitin
2) don't have chloroplasys as they dont photosynthesise

8

What does the nucleus do

contains the organisms hereditary material & controls the cells activities

9

What 5 parts does the nucleus contain

1) nuclear envolope
2) nuclear pores
3) nucleoplasm
4) chromosomes
5) nucleolus

10

What is the nuclear envelope

double membrane that surrounds the nucleous

11

What does the nuclear envelope do

controls the entry and exit of materials in and out of the nucleus, contains the reactions taking place within

12

What do the nuclear pores allow

the passage of large molecules such as mRNA out of the nucleus

13

What is the nucleoplasm

granular, jelly-like material that makes up the bulk of the nucleus

14

What do chromosomes consist of

protein-bound linear DNA

15

What is the nucleolus

small spherical region within the nucleoplasm

16

What does the nucleolus do

manufactures ribosomal RNA and assembles the ribosomes

17

Is there more than 1 nucleolus in the nucleus

yes

18

What are the 3 functions of the nucleus

1) act as the control centre of the cell through production of mRNA and tRNA (so protein synthesis)
2) retain the genetic material of the cell in the form of DNA and chromosomes
3) manufacture ribosomal RNA and ribosomes

19

What is the average size of the nucleus

10-20 um

20

What is the usual shape of mitochondria

rod-shaped

21

What is the average size of mitochondria

1-10 um

22

What structures are mitochondria made up of (3 points)

1) double membrane
2) cristae
3) matrix

23

What does the double membrane of the mitochondria control

the entry and exit of material

24

What does the inner of the membranes of the double membrane fold to make

extensions called cristae

25

What are cristae

extensions of the inner membrane

26

What does the cristae do

provide a large surface area for the attachment of enxymes and other proteins involved in respirations

27

What does the matrix contain (4 points)

1) protein
2) lipids
3) ribosomes
4) DNA
5) enzymes involved in respiration

28

What does the matrix allow for the control of

production of some of their own proteins

29

What is the function of mitochondria

the sites of respiration

30

What molecule does mitochondria require & produce lots of

ATP