CC2 Cells And Control

Question 1

Mitosis

Answer 1

A type of cell division that results in two daughter cells each having the same number and type of chromosomes . Used in growth.

Question 2

1st Phase

Answer 2

Interphase (In-between)

Question 3

2nd Phase

Answer 3

Prophase (Prepare)

Question 4

3rd Phase

Answer 4

Metaphase (Middle)

Question 5

4th Phase

Answer 5

Anaphase (Apart)

Question 6

5th Phase

Answer 6

Telophase (Two)

Question 7

Interphase

Answer 7

Duplicate of Chromosomes, duplication of other things/organelles.

Question 8

Prophase

Answer 8

Membrane broken down on nucleus, Chromosomes condense/shorten.

Question 9

Metaphase

Answer 9

Chromosomes move to the middle, spindle fibres begin to grow

Question 10

Anaphase

Answer 10

The spindle fibres spit the chromosomes and drag them apart

Question 11

Telophase

Answer 11

2 superate nuclei form.

Question 12

Cytokinesis

Answer 12

Cells finally break apart.

Question 13

Growth

Answer 13

The process of increasing in size.

Question 14

Growth is measured in

Answer 14

Size
Wet mass
Dry mass

Question 15

Size

Answer 15

Height, length, circumference and width

Question 16

Wet mass

Answer 16

Includes all mass in an organism including the water in its body. (Highly variable)

Question 17

Dry mass

Answer 17

Mass of an organism which does not have any water present

Question 18

3 things for growth in plants

Answer 18

Cell division
Cell elongation
Differentiate

Question 19

Cell division

Answer 19

Mitosis

Question 20

Cell elongation

Answer 20

Takes place in plant cells only where the plant expands making the cell bigger. (Zones of elongation)

Question 21

Differentiate

Answer 21

(Zone of differentiation) Stem Cells in Animals, in plants they are meristem.

Question 22

Transport in a plant done by

Answer 22

Xylem

Phloem

Question 23

Xylem transports

Answer 23

Water

Question 24

Phloem transports

Answer 24

Food

Question 25

Meristem

Answer 25

Found just beneath the tips of the roots where cells continually keep dividing. Once the cells have divided they become longer through cell elongation. As the plant grows older meristem begin to become specialised Cells - they differentiate.

Question 26

2 things for growth in animals

Answer 26

Cell division | Differentiate

Question 27

The nervous system

Answer 27

The network of nerve cells and fibres which transmits nerve impulses between parts of the body.

Question 28

5 senses

Answer 28

``` Sight Smell Taste Sound Touch ```

Question 29

Parts of the nervous system

Answer 29

Peripheral nervous system | Central nervous system

Question 30

Central nervous systems (CNS) comprised of...

Answer 30

Brain | Spinal chord

Question 31

Peripheral nervous system (PNS) is comprised of...

Answer 31

Motor neurones Sensory neurones Relay neurone

Question 32

Order of the reflex arc

Answer 32

``` Stimulus Receptor Sensory neurone Synapse Relay Synapse Motor neurone Effector Response ```

Question 33

Embryonic stem cells

Answer 33

Pro: Pluripotent, Easily sourced, easy to remove, can be cloned to avoid rejection Con: Ethics, illegal in many countries, could lead to illegal human cloning.

Question 34

Adult stem cells

Answer 34

Pros: No ethical issues, would avoid rejection if from patient Cons: Difficult to identify and remove, multi-potent

Question 35

Pluripotent

Answer 35

Capable of becoming many different cell types

Question 36

Multi-potent

Answer 36

Can only become some types of cells