A Fun Activity (5 August - Sec 2AD)

A person uses a 1500W appliance for a period of time. He pays 15 cents.
Assuming the price of electricity is 30 cents per kWh, how long did he use the appliance for?

• 10 mins

• 20 mins

• 30 mins

• 40 mins

What is the name of the enzyme that digests fats?

Proteins are digested into ___________ at the small intenstine.

What is the function of the colon?

• • Absorbs remaining water and mineral salts from undigested food.​

• • Temporarily stores the remaining undigested food as faeces.​

• Temporarily stores the food before it passes into the large intestine

• • a punctuation mark that indicates a relationship between two clauses or sentences

Dissolved mineral salts enters the root hair cells because there is a ______ of dissolved mineral salts in the soil as compared to the root hair cell.

• higher amount

• lower amount

• higher concentration

• lower concentration

A slice of yam was placed in a 20% salt solution for a day.

The length of the yam slice increased.

What is a possible concentration of the salt in the yam initially?

• 10% salt solution

• 20% salt solution

• 30% salt solution

• It depends on the weather