5.1- cellular respiration

Question 1

definition of energy

Answer 1

the ability to do work

Question 2

why do we need energy

Answer 2

-metabolism
-movement
-active transport
-maintainance, repair and division of cells
-maintainance of body temp

Question 3

structure of ATP

Answer 3

-adenine base (double ringed)
-ribose sugar
-3 phosphate groups

Question 4

what is a nucleotide

Answer 4

-ATP is a mononucleotide as it occurs singly
-DNA is an example of a polynuncleotide

Question 5

the ATP cycle

Answer 5

-ATP is turned to ADP by liberating a phosphate, using ATPase which catalyses synthesis if ATP (hydrolysis)
-ADP turned in to ATP using ATPsynthase (condensation)

Question 6

Hydrolysis vs condensation

Answer 6

hydrolysis= addition of water

condensation= removal of water

Question 7

where does the energy needed to produce ATP come from

Answer 7

-from breakdown (catabolic) or redox reactions

Question 8

advantages of ATP (5)

Answer 8

-instant source of energy in the cell
-releases energy in small amounts as needed
-resynthesized
-it is mobile and transports chemical energy to where it is needed
-universal energy carrier

Question 9

what is ATP used for (7)

Answer 9

-muscle contraction
-control of cytoskeleton
-active transport
-DNA synthesis
-protein synthesis
-RNA synthesis
-photosynthesis

Question 10

does aerobic respiration need oxygen

Answer 10

yes

Question 11

word equation for respiration

Answer 11

glucose+oxygen > carbon dioxide+water+energy

Question 12

symbol equation for respiration

Answer 12

C6H12O6+6O2 > 6CO2+6H2O+ATP

Question 13

what is respiration

Answer 13

-process by which energy in organic molecules is made available for an organism to do work
-produces ATP

Question 14

which chemical reaction has a similar equation to respiration

Answer 14

-combustion

Question 15

what is combustion

Answer 15

-energy released from fuels through the addition of exygen releasing CO2 and water