b1.1.1 Flashcards
metabolic rate
the rate at which all chemical reactions in all the cells of the body take place .
good cholesterol
hdl
bad cholesterol
ldl
microorganism
bacteria or virus
pathogen
microbes that cause disease
ignaz seemmelweiss
introduced idea of hand washing
[moi] airborn;
breath in bacteria and viruses
[moi] brocken skin ;
cuts and scrapes
[moi] ingestion;
eating contaminated food
if antibiotic course is not completed …
resistant bacteria
MMR
mumps,measles,rubella.
thalidomide
stops morning sickness but cause deformed limbs of children however is now used to stop leprosy
antigen
a molecule that causes an immune response
white blood cells protect by…
engolf pathogens, produce anti-bodies and create anti-toxins
viruses don’t …
eat, need energy and do not reproduce like bacteria
phagocytes
white blood cells that can swallow and digest microbes and other foreign particles.
lymphocytes
determine the specificity of the immune response.
reflex arc …
receptor – nerve impulse– sensory nerve– synapse– relay neuron– synapse – motor neuron – effector
hormones are …
a chemical messenger sent from the glands, transported in the blood stream.
FSH
matures\ripens egg
oestrogen
build lining
LH
release egg
stimulates and inhibits ..
FSH stimulates Oestrogen which stimulates LH which inhibits Oestrogen which inhibits FSH.
small surface are to total volume ratio means
less heat loss
large surface area to total volume ratio means
eat more
carbon cycle
dead plant – micro organisms – decompose – respire – produces co2 which is released back into the atmosphere.
FSH made in …
pituitary gland
Oestrogen made in ..
ovaries
LH made in….
pituitary gland
light
phototropic
water
hydrotropic
gravity
geotropic
auxin
causes cells to grow quickly
extremophile
microorganism that lives in extreme conditions
asexual
one parent
sexual
two parents
every cell has …….. chromosomes
46
sex cells
gametes
adult cell cloning [EXAMPLE IS Frog]
take frogs egg — add skin cell of a different frog — give it 46 chromosomes – give it a electric shock — put in womb – baby looks exactly the same as done and will be same age.
embryo cell cloning
fertilise an egg — turn into a ball of 200 cells but take out before it decides what it is– take some cells out and put them into other mother — cells think they are a fertilised egg – all are identical.