What is the function of a nucleus?
contains genetic material, which controls the activities of the cell
controls the movement of substances into and out of the cell
most chemical processes take place here, controlled by enzymes
Which is (more) true?
Osmosis is when particles continue to move from a high to a low concentration while there is a concentration gradient.
Osmosis is the movement of water from a less concentrated solution to a more concentrated solution through a partially permeable membrane.
Where is urea produced?
Anus
Kidney
Pancreas
Liver
Stomach
What's a synapse?
a connection between two neurones.
the connector neurone
nerve fibres that carry signals to the effector muscle or gland
nerve fibres that carry signals from the receptors in the sense organs to the central nervous system
The pupil is...?
is the light-sensitive part and is covered in rods and cones which detect light
the hole in the middle of the iris, which the light goes through
