Osmosis and respiration recap

Osmosis is the movement of...

• water

• particles

• ice

• oxygen

Water moves...

• From a high concentration to a low concentration

• From a low water concentration to a high water concentration

• From a dilute solution to a concentrated solution

• From a concentrated solution to a dilute solution

If a potato chip is placed into a beaker containing a concentrated sugar solution it will lose mass because...

• The sugar in the potato diffuses out

• Water enters the potato by osmosis

• Water will not leave or enter the potato

• Water leaves the potato by osmosis

If a potato chip is placed into pure, distilled water...

• Water will enter the potato by osmosis and the cells will become turgid and gain mass.

• Water will enter the potato by osmosis and the cells will burst.

• Sugar will diffuse out of the potato.

• None of the answers are correct.

If we place a potato chip inside a solution with the SAME sugar concentration as the chip...

• The potato chip will not gain or lose any mass.

• Water will leave the potato by osmosis and so the potato will lose mass.

• Water will enter the potato and so it will gain mass.

• None of these answers are correct.

What are the reactants of respiration?

• Energy

• Carbon dioxide and water

• Glucose and oxygen

• Glucose and carbon dioxide

What are the products of respiration?

• Glucose and oxygen

• Carbon dioxide and water

• Energy

• Oxygen and water

How can energy be used in a cell?

• Muscle contraction

• Active transport

• Maintaining body temperature

• All of these answers are correct.

How many hydrogen atoms are there in 1 glucose molecule?

• 6

• 16

• 2

• 12

In the symbol equation for respiration, how many oxygen molecules are required?

• 1

• 6

• 12

• 2