Aqa Biol4 2.1 - Energy And Atp

Front 1

What is energy measured in?

Back 1

Joules

Front 2

What do organisms need energy for?

Back 2

Metabolism, movement, AT, maintenance, repair and division, production of e.g. enzymes and hormones, maintenance of body temperature (WBA)

Front 3

ATP + H₂O -->

Back 3

ADP + Pi + Energy

Front 4

Splitting of ATP to ADP is a condensation/hydrolysis reaction

Back 4

Hydrolysis

Front 5

What are the three ways of synthesising ATP?

Back 5

Photophosphorylation, oxidative phosphorylation, substrate-level phosphorylation

Front 6

When and where does photophosphorylaton take place?

Back 6

In chlorophyll-containing plant cells during photosynthesis

Front 7

When and where does oxidative phosphorylation take place?

Back 7

In the mitochondria of plant and animal cells during the process of ELECTRON TRANSPORT

Front 8

When and where does substrate-level phosphorylation take place?

Back 8

In plant and animal cells when phosphate groups are transferred from donor molecules to ADP to make ATP

Front 9

Why is ATP better as an immediate energy source than glucose?

Back 9

Each ATP molecule releases less energy than each glucose molecule (less wastage)

Hydrolysis of ATP to ADP is a single step process - immediate and rapid

Front 10

ATP is NOT a high-energy substance, it is a ____________

Back 10

Intermediate energy substance that is used to transfer energy

Front 11

ATP is the source of energy for:

Back 11

Metabolic processes (e.g. making polysaccharides, polypeptides and DNA/RNA from nucleotides)

Movement

AT

Secretion (ATP needed for lysosome formation)

Activation of molecules (e.g. in glycoloysis)