MCQ on Enzymes

If the Km of an enzyme for substrate A is 1 x 10^-6 and for substrate B, is 4 x 10^-8 , it means

Which enzyme is used in the estimation of glucose from the blood sample using biosensors?

Enzymes accelerate the rate of a reaction by:

Enzymes in an enzymatic reaction do not interfere with:

Multiple forms of enzymes with the same catalytic activity but with different structures are called:

An organic substance bound to an enzyme and essential for its cavity is called:

Which of the following is an example for a ribozyme?

Which of the following is commonly known as the Complex II of the electron transport system of mitochondria?

Enzymes act by:

Thomas was purifying an enzyme from a homogenate of muscle cells. He went through seven steps of purification and fond that the enzyme activity was the same as the homogenate value. On the eight step, when the protein was highly pure, the enzyme activity rose to five times that of the homogenate value. Can you suggest a possible reason?

Two students independently isolated lactate dehydrogenase from chicken heart and measured its activity as a function of substrate concentration, each determining Vmax and Km of their own preparation. They both got the same Km but different Vmax. One student said they had isolated different forms of the same enzyme, the other said they had isolated the same form. To resolve their argument they must:

Which of the following element plays an important role in nitrogen fixation?

A competitive inhibitor of an enzyme

Which statement is NOT true about E. coli DNA ligase?

The enzyme used for the synthesis of cDNA: