Metabolism and Survival

A metabolic pathway consists of ...

• a series of reactions

• a series of enzymes

• a series of enzyme-controlled chemical reactions

• a series of biological reactions

Which organelles contain cell compartments where metabolic reactions occur?

• Cell membranes

• Mitochondria and chloroplasts

• Nucleus and ribosomes

• Endoplasmic reticulum and Golgi apparatus

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the advantage of having enzymes in organelles?

• Increased surface area

• Higher reaction rates

• Flexible cell membranes

• Increased ATP production

What are the two forms of metabolic reactions?

• Anabolic and catabolic

• Catabolic and reversible

• Irreversible and alternative

• Alternative and anabolic

As part of a metabolic pathway substrate X is converted into product Y.

Substrate X ---------> Product Y

Under what circumstances would this reaction be reversed?

• An increase in concentration of both X and Y

• A decrease in concentration of both X and Y

• An increase in concentration of X and removal of Y

• An increase in concentration of Y and removal of X

Two features of catabolic reaction sequences are...

• the breakdown of molecules & requirement for energy

• the breakdown of molecules & release of energy

• the build up of molecules & release energy

• the build up of molecules & the requirement for energy

Tags

NGSS.HS-LS1-7

Two features of anabolic reaction sequences are...

• the breakdown of molecules & requirement for energy

• the breakdown of molecules & release of energy

• the build up of molecules & the release of energy

• the build up of molecules & requirement for energy

Which type of reaction is involved in ATP synthesis?

• anabolic

• catabolic

The energy required to start off an enzyme reaction is called the ......

• Reaction energy

• Activation energy

• Metabolic energy

• Optimum energy

This is high between active site and substrate and low between active site and product

• orientation

• activation energy

• induced fit

• affinity