1.6 ATP ( biological molcules )

Question 1

what is ATP

Answer 1

adenosine triphosphate

Question 2

describe the structure of ATP

Answer 2

• ribose bound to a molecule of adenine and 3 phosphate groups
• nucleotide derivative

Question 3

Describe jow ATP is broken down

Answer 3

• ATP => ADP + Pi
• hydrolysis reaction , using a water molecule
• catalysed by ATP hydrolase

Question 4

give two ways in which the hydrolysis of ATP is used in cells

Answer 4

• complied to energy required reactions within cells
• inorganic phosphate released can be used to phosphorylate other compounds , making them more reactive

Question 5

describe how ATP is resynthesises in cells

Answer 5

• ADP + Pi => ATP
• condensation reaction , removing a water molecule
• catalysed by ATP synthase
• during respiration and photosynthesis

Question 6

suggest how the properties of ATP make it a suitable immediate source of energy for cells

Answer 6

• releases energy in small amounts
• single reaction
• cannot pass out of cell