Biology quiz - general

The water has moved out the cell by osmosis, the cell decreases in volume and the cytoplasm no longer pushes against the cell wall. This makes the plant wilt. Excessive loss of water can cause the cell to become plasmolysed, when the membrane and cytoplasm split away from the wall

Water has moved into the plant cell by osmosis. The pressure increases inside the cell, the contents of the cell push against the wall which helps support the plant tissues.

concentration, surface area to volume ratio, temperature

pressure, temperature, concentration

Carbon dioxide + water ----> glucose + oxygen

oxygen + carbon dioxide + water ----> glucose + oxygen

amino acids and glycerol

fatty acids and glycerol

Add iodine, if glucose in present the colour changes from browny-orange to blue-black

Add benedicts reagent and heat it, if glucose is present it will form a colours precipitate. The coloured precipitate changes colour from blue to green to yellow to orange to brick red.

emulsifies fats and neutralises stomach acid into alkaline

neutralises stomach acid and helps protect lining of stomach

Glucose

Amino acids