Y9 everything Flashcards
(31 cards)
In animal cells when does cell differentiation take place?
very early on
In plant cells when can they differentiate
any time in their life
diffusion is
cells going from a high to a low concentration
factors that affect the rate
temperature,surface area and concentration gradient
what are the differences in animals called
variations
the right chamber pumps..
blood to the lungs
what does the septum do
separates the right and left chamber of the heart
what does a receptor do
they detect changes in our surroundings
exchange surfaces have to have
-moist lining
-large surface area
-short diffusion pathway
-semi-permeable
what do enzymes do in digestion
speeds it up
what happens to molecules of protein during digestion
break down
what is the form that information is passed from the ear to the brain
nerve impulses
when our breathing rate is higher…
we produce more anaerobic and aerobic respiration
what are glucose molecules converted into and why
into glycogen to be stored in liver cells
what is Haemoglobin
a protein found in red blood cells that is essential for transporting oxygen throughout the body
what are glucose molecules converted into and why
into glycogen to be stored in liver cells
what is the function of the nervous system
to allow fast short lived responses to stimuli in the environment
what is stimulus
a change in the environment
what is the role of a receptor
to detect the stimulus and send an electrical impulse
what does CNS stand for
Central nervous system (includes the brain and spinal cord)
3 types of neurons
sensory,relay and motor
what does a sensory neurone do
carries electrical impulses from the receptor into the CNS
what does a motor neuron do
carries impulses from the CNS to muscles and glands
what does a relay neurone do
connects sensory neuron’s to motor neurones
