Energy and respiration

Question 1

Energy in living organisms needed for:

Answer 1

 Anabolic reactions:
 Cellular work:
 Movement
 Maintenance of body temperature in endotherms

Question 2

energy is needed for anabolic reactions like

Answer 2

 Protein synthesis / DNA replication / glycogenesis / polymerisation

Question 3

energy is needed for cellular work like

Answer 3

 Active transport / movement of chromosomes / sliding filaments /
movement of vesicles

Question 4

Glucose is stable due to

Answer 4

its activation energy – lowered by enzymes and raising the energy
level of glucose by phosphorylation

Question 5

Answer 5

Question 6

Answer 6

Question 7

Features of ATP that make it suitable as the universal energy currency:

Answer 7

 Loss of phosphate / hydrolysis, leads to energy release
 Small packets of energy
 Small / water-soluble, so can move around cell
 Immediate energy donor
 Acts as link between energy-yielding and energy-requiring reactions
 High turnover

Question 8

Excess energy during transfer and reactions are converted into

Answer 8

thermal energy

Question 9

Answer 9