MCQs of Biochemistry – Enzymes

Enzyme + coenzyme constitutes:

Multiienzyme complex in human:

Hexokinase is a:

Key glycolytic enzymes:

Coenzyme responsible for single carbon transfer is:

Benzidine test is positive with the enzyme:

Michaelis-Menten hypothesis states that:

Dehydrogenase used as coenzymes all of the following, except:

Muscle glycogen, which cannot contribute to blood glucose due to the absence of which enzymes?

Which of the following is correct of the pyruvate dehydrogenase enzyme complex?

Elevated levels of serum glutamic oxaloacetic transaminase in indicative of:

Competitive enzyme inhibition will cause:

The enzyme that is specifically increased in obstructive jaundice is:

The deficiency of thiamine can be identified by measuring the red cell:

Acetyl Co-A acts as a substrate for all the enzymes except:

The activity of the following enzyme is affected by biotin deficiency

Km of an enzyme is:

Enzymes help by:

A material that speeds up a chemical reaction without chemically becoming involved is called:

The main site of fluoride inhibition in the Embden Meyerhof pathway of acid:

Fraction of CPK is an enzyme that is elevated in a myocardial infarct is:

Muscle glycogen cannot contribute directly to blood glucose level because:

Enzymes are classified according to:

Enzymes involved in degradation of epinephrine:

The activity of this plasma enzyme is responsible virtually for all plasma cholesterol esters in humans:

In mycocarrdial infarction the first enzyme to rise:

Enzyme that catalyses the transfer of a molecule group from one molecule to another is:

The enzymes that catalyses the same reaction but differ in physical properties are called as:

Pick the odd one out:

The enzyme that splits hydrogen peroxide into water and oxygen is:

An enzyme that makes a double stranded DNA copy from a single stranded RNA template molecule is known as:

Serum alkaline phosphatase level increase in:

An example of layses is:

Enzymes concerned with the citric acid cycle are found in:

Which of the following is a membrane bound enzyme that catalyzes the formation of cyclic AMP from ATP?

The most common enzyme deficiency in man is:

The combination of main supporting enzyme is called:

Coenzyme, in an enzymatic reaction usually functions to:

Lactate dehydrogenase is:

When the prosthetic group of an enzyme is an inorganic ion, it is called a:

Enzymes stored in muscle is:

Megnesium is needed for the activity of which enzymes?

Iron is present in all of the following except:

The enzyme phosphofructo kinase-1 is strongly activated by:

Inactive precursors of enzymes are known as:

One of the earliest symptoms of Vit. A deficiency is:

Cofactor required for lipoprotein lipase activity is:

LDH has following number oflsoenzymes

Mutation in the oxidative enzymes (peroxisomes) could lead to:

A example of a preventive antioxidant is:

Biotin is required for the activity of:

Which of the following is NOT a characteristic feature of allosteric enzymes?