The Heart Flashcards
1
Q
What is an enzyme?
A
An enzyme is a biological catalyst that speeds up chemical reactions without being changed or used up.
2
Q
What is active transport?
A
When particles are moving up or against a concentration gradient from low to high concentration.
3
Q
What is diffusion?
A
Diffusion is the movement of particles from an area of high concentration to an area of low concentration.
4
Q
What is osmosis?
A
Osmosis is the diffusion of water molecules from a dilute solution to a more concentrated solution through a partially permeable membrane.
5
Q
Does the artery flow blood away or to the heart?
A
Away
6
Q
Which direction does the vein flow blood to?
A
Towards the heart.
