biology
name the enzymes that digest lipids
lipase
name the enzyme that digests proteins
protease
name the enzyme that digest carbohydrates
carbohydrase
where are all the enzymes made?
the pancreas and small intestine
what are the 2 products of lipids digestion?
fatty acids and glycerol
What is an adaptation of root hair cells that increase of plants absorption of water?
A large surface area
where does aerobic respiration take place in the cell?
mitochondria
what makes blood red
haemoglobin
what do platelets do
cause clotting
what do red blood cells do
carry oxygen around the body
What do white blood cells do?
Fight diseases and infections
What does plasma do?
Creates a liquid to transport, vitamins and minerals around the body
what does plasma look like
A straw coloured liquid
What do red blood cells look like?
biconcave shape, no nucleus, full of red pigment (haemoglobin)
what do you White blood cells look like?
White blood cells have a nucleus and can move around and produce chemicals called antibodies
what do do platelets look like?
small cell fragments
name, one thing plasma carries
water
amino acids
glucose
Cholesterol
Antibodies
Vitamins
Minerals
carbon Dioxide and urea
Name, three substances that plasma transports
platelets, white blood cells and red blood cells
What is an adaptation of a red blood cell?
Biconcave, so it has a larger surface area
no mitochondria so can't use any oxygen it carries
no nucleus so it carries more oxygen
What part of the cell contains DNA?
The nucleus
Describe the role of the plasma
Transports nutrients and red blood cells and white blood cells and platelets around the body
State what the plasma is transporting
Proteins, hormones, nutrients, amino acids, urea, and carbon dioxide
Describe three adaptations of red blood cell
Biconcave, no Mitochondria or nucleus
What protein is used to transport oxygen?
haemoglobin
What do you platelets do?
Cause clotting and the barrier
What are platelets made of?
Small cell fragments
What protein is formed to build a clot
fibrinogen
How much of the blood is made up of white blood cells?
Less than 1%
what does the symbol for micro metre look like?
a u with a long left side and an m
which of these is not a function of the blood?
a) support the body
b) Carry oxygen
c) Carry urea
Write the letter
a
what are the 4 components of blood?
WBC, RBC, plasme, platelets
what is the definition of diffusion
when particles go from an area of high concentration to an area of low concentration
what is the organ in the circulatory system that pumps blood round the body?
the heart
where does aerobic respiration take place?
mitochondria
what are the 3 types of vessels
arteries, capillaries and veins
what type of blood pressure does an artery have?
high
what type of blood pressure does a capillary have?
very low
what type of blood pressure does a vein have?
low
what helps withstand pressure?
muscles
what are vessels made of
muscles
what is it called when a blood vessel bursts?
anurism
what is a difference between a vein and an artery
a vein has valves and an artery doesn't
what is a capillary?
a very thin blood vessel that is used for exchange of substances