Question 8 (1 point) Choose all of the following that are characterstics of a gi

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Question 8 (1 point)

Choose all of the following that are characterstics of a given enzyme

Question 8 options:

an enzyme increases rate of a chemical reaction

all proteins are enzymes

an enzyme binds substrate and releases product

an enzyme is typically a protein

a typical enzyme can catalyze any reaction

interactions between enzyme and substrate are weak

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Question 9 (1 point)

Choose all of the following that correctly characterize the interaction of a protein with a ligand

Question 9 options:

the ligand binds to a specific 3D structure of the protein

is independent of the shape of the ligand

stability depends on the number of weak interactions

a ligand binds stably to any protein binding site

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Question 10 (1 point)

Choose all of the following that are characteristics of weak interactions

Question 10 options:

weak interactions form biological membranes

weak interaction occur between the subunits of the glycogen molecule

multiple weak interactions are required for stable interaction between a protein and its ligand

each weak interaction between strands of DNA is stable

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Question 11 (1 point)

A glucose A1C test shows that person X has an average blood glucose of 100 mg/dl. A response to hyperglycemia is triggered by blood glucose of 120 mg/dl. A hypoglycemic response is triggered by 80 mg/dl. Which of the following are consistent with the homeostasis of blood glucose with respect to person X.

Question 11 options:

both alpha and beta cells of pancreas secrete hormone when blood glucose is above 120 mg/dl

100 mg/dl glucose causes alpha cells of the pancreas to secrete glucagon

100 mg/dl is the equilibrium concentration of blood glucose

100 mg/dl is the set point for reflex response

during a period of time in which blood glucose goes from 70 mg/dl to 140 mg/dl, hormone release by both alpha and beta cells of the pancreas change

1)

an enzyme increases rate of a chemical reaction

2)

all proteins are enzymes

3)

an enzyme binds substrate and releases product

4)

an enzyme is typically a protein

5)

a typical enzyme can catalyze any reaction

6)

interactions between enzyme and substrate are weak

Explanation / Answer

Q 8 answer is option 1,3,4,6

An enzyme increase the rate of a chemical reaction is a true statement, the main function of the enzyme is to decrease the activation energy and increase in the reaction rate, all the enzymes are mainly proteins but some enzymes are also rna like ribozyme , all proteins are not enzyme, interaction between the enzyme and substrate is very weak its for very short interval and it have very weak bond between them.

Q 9 protein ligand interaction , the Legend bind to specific structure of the protein it's not bind anywhere in the protein.

It's depend on the shape of ligand , a ligand does not bind to any protein sites,

Q 10 multiple weak interaction is required in between the protein and its ligand. In the biological membrane and in between the DNA strands and in between the subunits of glycogen there is strong interaction occur no weak interaction.

Q 11 both option c and e are correct, 100mg/dl is the equilibrium concentration of blood glucose,

During a period of time in which blood glucose goes from 70 to 140 harmone released by both alpha and beta cells of pancreas is changed because at level of 70 there is release of glucagon from Alpha cells while at level or above 120 there is release of insulin from beta cell.

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