Organisation AQA GCSE

Front

What type of membrane does water move through during the process of osmosis?

Back

Partially permeable membrane allows certain substances to pass while blocking others.

Front

Into which cell, P, Q or R will water move the fastest?

Back

Water moves fastest into the cell with the highest concentration of solutes (R).

Front

Name one substance, other than food, that the tadpole needs to exchange with the water in order to grow.

Back

Oxygen (O2) or Carbon Dioxide (CO2) are essential for respiration.

Front

Which food when digested would result in the most glucose being absorbed in the small intestine?

Back

Food B is likely to have the highest carbohydrate content, leading to more glucose.

Front

What reagent would you use to test for the presence of sugars?

Back

Benedict's solution is used to test for reducing sugars.

Front

Define osmosis.

Back

Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a selectively permeable membrane.

Front

What is a selectively permeable membrane?

Back

A membrane that allows certain molecules or ions to pass through it by diffusion and occasionally by facilitated diffusion.

Front

Explain the role of glucose in the body.

Back

Glucose is a primary energy source for cells and is essential for cellular respiration.

Front

What is the function of the small intestine?

Back

The small intestine is responsible for the digestion and absorption of nutrients.

Front

What is the purpose of using iodine solution in biological tests?

Back

Iodine solution is used to test for the presence of starch.