Gr.10 WORKSHEET1

What is the main difference between ATP and ADP?

• ATP has three phosphate groups, while ADP has two.

• ADP contains ribose, while ATP does not.

• ATP is an energy-storage molecule, while ADP cannot store energy.

• ADP is used in photosynthesis, while ATP is only used in cellular respiration.

Circle the figure which represents ATP molecule:

• a.

• b.

• c.

When ATP …………………… one phosphate group it becomes ADP.

• loses

• gains

• adds

• none of the above answer are correct

ATP has ……… ………… while ADP has two.

• two phosphate groups

• three phosphate groups

• one phosphate groups

• no phosphate group

What is the relationship between energy stored in food and ATP?

• Food energy is used to add a phosphate group to ADP, forming ATP.

• ATP is produced directly in food and stored in cells without any conversion.

• The energy stored in food is unrelated to ATP and used in a separate process.

• ATP breaks down food molecules to release energy for cellular use.

……….. can be thought of as a compressed spring that stores potential energy. When the third phosphate group is removed, the 'spring' relaxes and energy is released.

• ADP

• ATP

• Glucose

• NADH

All types of food cause the body to produce the same amount of energy.

• TRUE

• FALSE

…………………………. are most commonly broken down in your body to get energy, while …….. is less likely.

• Proteins/ carbohydrates

• Lipids / carbohydrates

• Carbohydrates / proteins

• Amino acids/ carbohydrates

In ……………………………….., chemical energy - instead of light energy- is used to build carbon-based molecules.

• Photosynthesis

• Cellular respiration

• Fermentation

• Chemosynthesis

Plants use photosynthesis and are ……………………….. .

• autotrophs

• producer

• decomposers

• a+b are correct