regulatory mechanisms questions biology homework help

1. feedback inhibition: product inhibits its own production
2. competitive inhibitor: binds to the active site of the enzyme
3. enzyme modification: enzyme gains or loses a functional group
4. substrate availability: more substrate increases enzyme activity (until it reaches saturation)
5. All are correct

1. structural proteins encoded by genes regulate metabolic pathways
2. enzymes encoded by genes regulate metabolic pathways
3. DNA regulates metabolic pathways directly

1. the size of the active site of the enzyme.
2. the manner of binding of the inhibitor to the enzyme.
3. the manner of binding of the substrate to the enzyme.

1. Hunger increases and the metabolic rate goes down.
2. Hunger decreases and the metabolic rate goes up.
3. Hunger increases and the metabolic rate goes up.

1. Adaptation
2. Reproduction
3. Homeostasis
4. Metabolism

1. Short term: glucose. Medium term: glycogen. Long term: fat.
2. Short term: fat. Medium term: glycogen. Long term: glucose.
3. Short term: glycogen. Medium term: glucose. Long term: fat.

1. Our normal responses of appetite and metabolism ensure that adults remain at a given normal body weight. Any change from this normal weight sets in motion responses that return the body to its normal weight.
2. Our normal responses of appetite and metabolism tend to cause weight gain in modern societies, and they also tend to make weight loss difficult.

What would be a typical regulatory system in a metabolic pathway?

In a metabolic pathway, a typical control mechanism is to have: ________