2.6 cell divisison

Question 1

Order of the cell cycle

Answer 1

Group one
S-phase
G2 things
Mitosis
Cytokinesis

Question 2

G1 phase

Answer 2

Growth and duplication organelles
Protein synthesis

Question 3

S-phase

Answer 3

DNA replication

Question 4

G2 phase

Answer 4

Growth of cells

Question 5

G0 phase

Answer 5

Specialisation
Senescence
Apoptosis

Question 6

Chromosome

Answer 6

Pair of sister chromatids

Question 7

erythrocytes

Answer 7

By concave shape - sa:v inc
Well-developed cytoskeleton - inc flexibility - allows to fit through capillaries
Contains haemoglobin
Lost all organelles

Question 8

Neutrophil

Answer 8

Multilobed nucleus - more space
Detect chemicals
Well developed cytoskeleton

Question 9

Spermatozoal

Answer 9

undelopodia -allows to swim
Streamline shape - reduce drag
Lots of mitochondria - inc aerobic respiration
Enzymes in acrosome - breaks down egg

Question 10

squamous epithelial

Answer 10

Flattened - red diffusion pathway
In the alveoli

Question 11

Ciliated epithelial

Answer 11

cilia can move things out side the cells

Question 12

Palisade cells

Answer 12

Long and cylindrical – so they can pack together with no spaces between them
Large vacuole
Contains chloroplast


Question 13

guard cells

Answer 13

thickened inner wall– makes it more rigid

Question 14

Epithelial tissue

Answer 14

Covers and lines surfaces in the body
no Blood vessels - diffusion used for nutrients
Smooth surfaces
Short cell cycles
Function equals protection

Question 15

Connective tissue

Answer 15

hold structures together and provide support

Question 16

Three types of cartilage

Answer 16

Hyacine
Fibrous
Elastic

Question 17

Muscle tissue

Answer 17

Made up a specialise cells that contract and cause movement
Contain myofilaments

Question 18

Three types of muscle tissue

Answer 18

Skeletal
Cardiac
Smooth

Question 19

Nervous tissue

Answer 19

Made of cells specialised to conduct electrical impulses

Question 20

Epidermal

Answer 20

Flattened cells that lack chloroplasts
Forms protective covering over leaves stems roots

Question 21

Xylem

Answer 21

Carry water and minerals from roots to all parts of the plant

Question 22

phloem

Answer 22

Sieve tubes transfer products of photosynthesis from leaves to parts of the plant that do not photosynthesise

Question 23

Meristematic tissue

Answer 23

Contain stem cells
Have been cell walls – little Celulose
No chloroplast
Don’t have a large vacuole

Question 24

Tissue

Answer 24

A group of cells that have a similar structure and what together to perform a specific function

Question 25

organ

Answer 25

A group of tissues that work together to perform a specific function

Question 26

Organ system

Answer 26

A group of organs that work together to perform a specific function

Question 27

What’s a stem cell

Answer 27

An undifferentiated cells that can differentiate into specialised cells divide by mitosis they can express all their genes

Question 28

Uses of stem cells in biological research

Answer 28

Test for efficacy of new medicines
Test for toxic toxicity of new medicine
Study cell development/differentiation
Sorry what goes wrong in diseases

Question 29

Uses of stem cells in medicine

Answer 29

Repair/replacement of damaged tissues