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lungs and heart
paper 1
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food tests
paper 1
8 cards
Cards (47)
Photosynthesis equation
1.
Carbon dioxide
+ water =
glucose
+ oxygen
2.
CO2
+ H2O =
C6H12O6
+
O2
respiration involves breathing, gas exchange and transport
phloem
transports
dissolved sugars
from the leaves to the rest of the plant
xylem
transports water and
mineral ions
from the roots to the leaves
transpiration
is the evaporation/loss of water/diffusion from the outside of the plants leaves to the
inside
translocation is the movement of
sugars
and
amino acids
from the leaves to the rest of the plant
rate of transpiration is affected by: temperature, humidity,
light intensity
,
air flow
diffusion
is the movement of particles from an area of high concentration to an area of
low concentration-down
a concentration gradient
osmosis
:movement of
water
particles down a concentration gradient across a semi permeable membrane-from an area of high to low concentration
active transport
: movement of particles from a
low
concentration to a high concentration against a concentration gradient
cell
: a basic unit of structure and function in living organisms that is capable of performing
life functions
tissue
: a group of cells with a similar structure and
function
, working together to carry out a particular function
organ
: a group of
tissues
that work together to perform a specific function
organ system
: a group of
organs
that work together to perform a specific function
mitosis
: the process of cell division that results in
two identical daughter
cells
respiration: the process of
transferring energy
from
glucose
to the cell's molecules
anaerobic respiration equation: glucose ---> lactic acid + energy
aerobic respiration equation: glucose + oxygen -> carbon dioxide + water
aerobic respiration: happens in the mitochondria and in the presence of oxygen
anaerobic respiration definition : happens in the absence of oxygen, produces lactic acid
mouth
= mechanical- digestion, absorption, and secretion of saliva, and
taste
mouth=chemical-salivary glands,
mechanical-tongue
,
sensory-taste buds
liver=produces
bile
an detoxifies
harmful
chemicals
gall bladder
= stores bile produced in the
liver
pancreas=produces
pancreatic fluids
containing
digestive enzymes
large intestine= reabsorbs excess
water
into
blood
, pH 7, 1.5m long
small intestine= 7m long, food molecules are absorbed into
blood
through
villi
stomach=
hydrochloric
acid pH2,
protease
enzymes are secreted, muscles contract - acid kills
pathogens
oesophagus= stretches with food, muscular tube pushing down food due to contractions ( peristalsis )
to test for starch what is the chemical used?
iodine
solution
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