Gr.9 Energy and life

Which phrase best describes the function of the ATP molecule?

• stores energy
• carries energy
• absorbs energy
• converts energy

Where does the chemical energy to produce ATP come from?

• the conversion of ATP to ADP
• the use of chemicals from the environment to build sugars
• the addition of a phosphate group to ATP
• the breakdown of carbon-based molecules into smaller molecules

Energy is released from an ATP molecule for cellular processes when it 

• has a phosphate group removed
• stores and extra phosphate group
• converts a phosphate group to ADP
• produces a sugar molecule

Why are mushrooms considered heterotrophs?

• Mushrooms make their own food
• Mushrooms feed through photosynthesis
• Mushrooms trap and eat small flying insects
• Mushrooms feed by absorbing decomposing nutrients from organisms

What is the difference between ATP and ADP?

• ADP powers movement, while ATP does not
• ATP has three phosphates; ADP has two
• ATP contains adenine and ribose, while ADP does not
• ATP has less energy than ADP

Organisms that make their own food are called

• heterotrophs
• autotrophs
• homotrophs
• polytrophs

Energy is released upon the conversion of 

• AMP to ADP
• ADP to ATP
• ATP to ADP
• ATP to AZP

One way cells use the energy provided by ATP is to 

• carry out active transport
• carry out diffusion
• remove two phosphate groups
• carry out osmosis

Why do cells contain only a small amount of ATP?

• ATP cannot store large amounts of energy for a long time.
• ATP releases energy too quickly.
• ATP cannot carry out active transport.
  
• ATP has only two phosphate groups

ability to do work

• energy
• adenosine Triphosphate ATP
• phosphate of ATP
• ATP