Practice free Biomolecules (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which one is not gain by the hydrolysis of nucleoside? [DPMT 1996]
Nucleoside on hydrolysis yields nitrogen bases (purine, pyrimidine) and pentose sugar (ribose, deoxyribose)
The pair of nitrogen base in DNA is conjugated with [PB PMT 1997]
Base pairs occur when nitrogenous bases make hydrogen bonds with each other. Each base has a specific partner: guanine with cytosine, adenine with thymine (in DNA) or adenine with uracil (in RNA)
Enzyme speed up rate of reaction by [C.B.S.E. 2000]
Enzymes speed up the rate of reaction by lowering the activation energy required for the reaction to proceed. They do this by providing an alternative reaction pathway with a lower activation energy. This does not change the equilibrium of the reaction, but it allows the reaction to reach equilibrium faster.
The catalytic efficiency of two different enzymes can be compared by the
The Km value (Michaelis constant) is used to compare the catalytic efficiency of different enzymes. It represents the substrate concentration at which the reaction rate is half of its maximum value (Vmax). A lower Km value indicates higher affinity of the enzyme for the substrate, meaning the enzyme is more efficient at lower substrate concentrations.
Enzyme which help in electron transfer are: [B.H.U. 1998]
Cytochromes are proteins that play a key role in the electron transport chain, which is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions. This process is essential for the production of ATP in cellular respiration.
Enzyme involved in hydrolysis of starch to maltose is called: [PMT 1999]
Amylase is an enzyme that catalyzes the hydrolysis of starch into sugars, primarily maltose. It is present in saliva and pancreatic juice and helps in the digestion of dietary starches.
the packaging of chromosome at higher levels require a set of proteins that ae collectively referred to as
fact
choose the correct match given below.
| Column 1 | Column 2 |
| P. mg 2+ ion | rubisco |
| Q. zn 2+ ion | pepcase |
| R. Mo2+ ion | alcohol dehydrogenase |
| S. phosphorous | chlorophyll |
Zn2+ is an activator of alcohol dehydrogenase
mo is an activator of nitrogenase
mg is present in chrophyll
P is a constituent of ATP
Which enzymes converts Monoglyceral-dehydes into fatty acids and glyecrol ?
Which gland in our digestive system has compound racemose structure ?
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Biomolecules question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.