Cells and things

Question 1

what does the cell membrane do?

Answer 1

Controls what goes in and out of the cell

Question 2

What does the nucleus of the cell do?

Answer 2

controls the functions of the cell and contains DNA

Question 3

What do Mitochondria do?

Answer 3

Releases energy from glucose, respiration happens here

Question 4

What does he cytoplasm do?

Answer 4

It provides structure by storing water/fat to allow materials to move between organelles easier. Its also where some reactions happen and enzymes break down waste.

Question 5

what does the chloroplast do me laddy?

Answer 5

This is where photosynthesis happens as it contains chlorophyll.

Question 6

what do ribosomes do?

Answer 6

They make proteins

Question 7

What are the main differences

of bacteria cells to other cells?

Answer 7

They have a flagellum to help them move,, nucleus just freely floating DNA, a capsule instead of cell wall.

Question 8

what does diploid mean?

Answer 8

a cell or nucleus containing two complete sets of chromosomes usually one from each parent.

Question 9

what does haploid mean?

Answer 9

a cell or nucleus having a single set of chromosomes.

Question 10

How does cancer develop?

Answer 10

when a faulty cell doesn’t get removed or fixed and the cell divides uncontrollably.

Question 11

what is mitosis?

Answer 11

The processes by which cells divide

Question 12

What is the chromosome called when an arm is preparing to divide\?

Answer 12

A chromatid

Question 13

state the stages of mitosis

Answer 13

Interphase
prophase
metaphase
anaphase
telophase and cytokinesis
(ipmatc)

Question 14

What happens in interphase?

Answer 14

The DNA replicates itself

Question 15

What happens in prophase?

Answer 15

The DNA forms chromosomes and the nucleus membrane disappears.

Question 16

What happens in metaphase?

Answer 16

Spindle fibres form from one side to the other and the chromosomes line up along the equator.

Question 17

What happens in anaphase?

Answer 17

The chromatids get pulled apart to either end of the cell to the poles.

Question 18

What happens in Telophase?

Answer 18

A nucleus develops around the chromosomes at either end

Question 19

what happens in cytokinesis?

Answer 19

The cytoplasm divides into two cells which are genetically identical.

Question 20

What are stem cells?

Answer 20

They are special cells which can differentiate to many different types of cells and are essential to developing as an embryo.

Question 21

What does totipotent mean?

Answer 21

Can become all different types of cells

Question 22

What happens in your frontal lobe?

Answer 22

Your emotions, personality and your learning

Question 23

What happens in you medulla oblongata?

Answer 23

all you unconscious actions like breathing and your heart rate and

Question 24

What happens in your cerebellum?

Answer 24

Balance, posture and muscle control

Question 25

What happens in your occipital lobe?

Answer 25

Your vision

Question 26

How could stem cells be used to treat spinal chord injuries?

Answer 26

By differentiating into neurons in the spinal chord

Question 27

What's the order of the nervous system?

Answer 27

``` Receptor sensory neuron relay neuron motor neuron effector ```

Question 28

What does a sensory neuron do?

Answer 28

receives information from the receptor and asses to the spinal chord where the relay neuron is.

Question 29

What does the relay neuron do?

Answer 29

The relay neuron receives information from sensory neuron and passes it to the motor neuron

Question 30

What does the motor neuron do?

Answer 30

Stimulates the effector

Question 31

What happens in the synapse?

Answer 31

electrical impulses activate chemical energy, the neurotransmitter, to travel along the neuron.

Question 32

What does the iris do?

Answer 32

controls how much light enters the pupil by changing its shape.

Question 33

what does the cornea?

Answer 33

clear colourless covering which focuses and refracts light.

Question 34

What is the conjunctiva?

Answer 34

A protective layer over the eye

Question 35

What is the retina?

Answer 35

A concentration f rods and cones

Question 36

what does a vacuole do?

Answer 36

store nutrients, provide shape and structure and store waste products.