biology test

Question 1

what does the nervous system consist of?

Answer 1

the cns and other nerves

Question 2

what is the structure and function of a sperm cell

Answer 2

structure- tail that allows the cell to swim to egg

function- to fertilise the egg

Question 3

what is mitosis

Answer 3

mitosis is the process of cell division which provides new sales for growth and repair of damaged cells

Question 4

what happens to plant cells in high solute solution

Answer 4

they shrink and become plasmolysed

Question 5

what happens to plant cells in pure water

Answer 5

they swell up and become turgid

Question 6

what happens to animal cells in high solute solutions

Answer 6

they shrink

Question 7

what happens to animal cells in pure water

Answer 7

they swell up and burst

Question 8

what is osmosis

Answer 8

osmosis is the movement of water from a region of higher water concentration to a region of lower water concentration through a selectively permeable membrane

Question 9

what is semi permeable?

Answer 9

tiny holes in the membrane allows some substances but not others to pass in and out of the cell for example the cell membrane is semi permeable

Question 10

what is diffusion

Answer 10

The movement of molecules from a region of high concentration to a region of lower concentration

Question 11

function of cell wal

Answer 11

provides structure

Question 12

function of vacuole

Answer 12

stores cell sap

Question 13

function of chloroplast

Answer 13

site of photosynthesis

Question 14

function of nucleus

Answer 14

controls cell activities

Question 15

function of cytoplasm

Answer 15

site of chemical reactions

Question 16

function of cell membrane

Answer 16

controls what enters and exit the cell

Question 17

what are the 3 structures only found in plant cells?

Answer 17

chloroplasts, cell wall and vacuole

Question 18

what happens to plant cells in high solute solution

Answer 18

they shrink and become plasmolysed

Question 19

what does the motor neurone do

Answer 19

carries impulses from the CNS towards the effector

Question 20

what does the interneuron do

Answer 20

transfers impulses from the sensory nerves to the motor nerves as quickly as possible

Question 21

what does a sensory Neuron do?

Answer 21

carries the impulse from a receptor towards the central nervous system

Question 22

what are the 3 types of neurons

Answer 22

sensory inter and motor

Question 23

what’s the function of the medulla

Answer 23

controls breathing and heart rate

Question 24

what’s the function of the cerebellum

Answer 24

controls balance and muscle coordination

Question 25

what is the function of the cerebrum

Answer 25

controls conscious thoughts

Question 26

what does the cns consist of

Answer 26

brain and spinal cord

Question 27

what does the nervous system consist of?

Answer 27

the cns and other nerves