MCQ-Practice Test -Chapter 9-Biomolecules

For RNA-interference, two scientists got Nobel prize in 2006. In which organism these scientists discovered this process?

Which one of the following is an example of an enzyme group called transferase

On plotting a graph between substrate concentration and time, a scientist found a sigmoid curve. The enzyme is

A test tube contains 4000 substrate moles along with its corresponding enzyme whose TON is 20. After 10 minutes if 40% of the substrate is left in the test tube, then how many enzyme molecules are involved in the reaction?

Arrange the following compounds in descending order on the basis of number of carbon atoms present in them.

Which of the following elements are present in all proteins?

Which of the following statements are true?

Enzymes functional in a cell are

In the study of enzymes, a sigmoidal plot of substrate concentration(S) versus the reaction velocity(V) indicates

Which biomolecule is correctly characteristed?

Reverse transcription was discovered by which of the following scientist?

The formation of phosphodiester bonds between two nucleotides can be considered as

Which of the following is a false statements

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is?

When hydrogen peroxide is applied on the wound as a disinfectant, there is frothing at the site of injury. which is due to the presence of an enzyme in the skin that uses hydrogen peroxide as a substrate to produce.

Formation of both peptide and glycosidic bonds involves

The term feedback refers to the effect of

An enzyme which brings about change inside a group without altering the composition is

The way enzyme helps a substrate to be attacked by reagent effectively is :