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46 terms

Year 9 Life processes

Yr 9 Science Chilton
STUDY
PLAY
Artery
large blood vessel that carries blood away from the heart
Aorta
major artery leaving the heart
Iris
coloured circular muscle in the eye that controls the size of the pupil
lipid
fats and oils - are not water soluble
diffusion
the random movement of particles from an area of high concentration to an area of low concentration
heart
a ball of muscular tissue that constantly pumps blood around the body
nucleus
contains the genetic material in a cell
cells
building block of all living things
iris
controls the size of the pupil
semi-circular canals
control balance
tip of tongue
contains taste buds for sweetness
factors affecting diffusion
temperature, space, size of particle
MRS C GREN
Movement, respiration, sensitivity, cells, growth, reproduction, excretion, nutrition
cardiac sphincter
prevents stomach acid and half digested food from mgoing back up the oesophagus
number of amino acids in proteins
20
eustachian tube
Keeps air pressure the same on both sides of the ear drum by letting air in and out of the middle ear
vitreous humour
jelly-like substance that helps the eye keep its shape
4 chambers of the heart
left and right atrium,left and right ventricle
deoxygenated blood
enters and leaves the heart on the right side
oxygenated blood
enters and leaves the heart on the left side
4 types of taste buds
sweet, sour, salty, bitter
veins
carry blood to the heart, contain valves to stop blood flowing backwards
left ventricle
chamber that the aorta leaves the heart from
ossicles
three bones of the middle ear - malleus, incus, stapes
carbohydrates
supply energy in the body
right atrium
the chamber where deoxygenated blood arrives at the heart
osmosis
movement of water and water soluble particles through a semi permable membrane
function of the lens
changes shape to focus the light on the retina
cochlea
inner ear, needed for hearing
function of pinna
collects sound waves and directs them to the ear drum
carbon dioxide and oxygen
gases that are exchanged in the lungs
starch
a long chain of glucose molecules
pulmonary artery
blood vessel that carries deoygenated blood to the lungs
3 parts of the ear
outer ear, middle ear, inner ear
factors affecting diffusion
temperature, space, size of particle
proteins
needed for growth and repair
lipids
needed for protection, cell function and brain function
sclera
tough, white protective coat around the eye
optic nerve
carries messages from the eye to the brain
4 differences between animal and plant cells
plant cells have cell wall, large vacuole, starch granules, chloroplasts
platelets
small pieces of protein that form a scab when they come in contact with oxygen
plasma
liquid part of the blood that contains blood cells, dissolved nutrients, wastes and water
red blood cells
flat, disc shape and carry oxygen
wgilte blood cells
fight infection
4 functions of the blood
transport, protection, controlling temperature, removing wastes
test for starch
iodine will trun black