Biology
What are Air sacs in the lungs?
Alveoli
A liquid in which other substances will dissolve......
Solvent
An interaction which, if unbalanced, will change the shape or change the movement of an object
Force
It is found at the top of the trachea, and contains strong cords that vibrate to make sound when we speak,.........
Larynx
The factor that is changed by the experimenter in an investigation
Independent Variable
Calculated as distance travelled / time taken, usually having the unit m/s
Average speed
What is Aerobic Respiration?
Chemical reactions inside cells, where oxygen is used to break down glucose and release energy.
The results which show the separation of substances after carrying out chromatography
Chromatogram
Define Moment and give formulae
the turning effect of a force
calculated as Force x Distance from Pivot
They contain Haemoglobin which transports oxygen from the lungs to the body cells,...............
Red Blood Cells
The force that holds individual atoms together
Electrostatic attraction
What is Atmospheric Pressure?
And
How much is it at sea level? Use proper units in your answer.
The force exerted by the air around us on a 1 m2 area.
Atmospheric pressure at sea level is: 100 000 N/m2
Gradual increase in a substance in and organism's body; it happens when the substance cannot be broken down inside the body cells,...............
Bioaccumulation
A property of an object which causes it to attract or repel other objects with a positive or negative charge
Electrical Charge
Define Diffusion.
The random movement of particles from an area where they are in high concentration to an area where they are in lower concentration.