Biology Flashcards
(11 cards)
What do red blood cells contain inside of them
Plasma,platelets,white blood cells,haemoglobin
what is haemoglobin
binds to oxygen to transport it from lungs to tissues and cells
Do arteries take blood too or away from your heart
away
Do veins take blood too or away from the heart
too
what is the job of a valve
makes sure blood doesn’t flow backwards
What is osmosis
the diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane
What is diffusion
Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration.
what are enzymes
biological catalysts that speed up the rate of a chemical reaction in a living organism
Where does water enter plants by osmosis?
Roots
Which process occurs against a concentration gradient?
Active transport
