Practice free Chemistry NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
which sugar is not present in vegetable ?
Lactose is not present in vegetables. Lactose is a disaccharide sugar that is found in milk and dairy products. It is composed of one molecule of glucose and one molecule of galactose. Vegetables typically contain sugars such as glucose, sucrose, and sometimes maltose but not lactose.
which substance in animal body can be Converted in glucose and also gives energy when required ?
Glycogen is a polysaccharide that serves as a form of energy storage in animals. It can be converted into glucose when needed to provide energy. Sucrose and cellulose are not stored in the body in this way, and starch is primarily a plant storage form of glucose.
___________ is not a cellulose .
Nylon fiber is a synthetic polymer and not derived from cellulose. Linen, rayon, and acetate fiber are derived from cellulose, making nylon fiber the correct answer.
protein is/are____ ___
Proteins serve multiple functions in the body. They act as enzymes to catalyze biochemical reactions, as hormones to transmit signals, and as antibodies to protect against pathogens. Thus, proteins can be enzymes, hormones, and antibodies.
what are the names of scientist, who had obtained many amino acid from hydrolysis of protein ?
Emil Fischer is well-known for his work on the chemistry of proteins, including obtaining amino acids through the hydrolysis of proteins. His pioneering research in the late 19th and early 20th centuries laid the foundation for our understanding of protein structure and metabolism.
which amino acid is known as C-terminal residue in alanyl glycyl phenylalanine ?
molecular mass of polypeptid is
molecular mass of protein _ __
Proteins are large biomolecules, and their molecular masses are typically greater than 10,000 Daltons (Da). For instance, the molecular mass of the protein hemoglobin is approximately 68,000 Da. Therefore, the correct answer is option o4: > 10000.
the polypeptide chains run parallel and are held together by ___ bonds
Polypeptide chains in proteins can be held together by various types of bonds. In the case of parallel polypeptide chains, disulphide bonds (S-S bonds) are one of the key stabilizing forces. These bonds form between the thiol groups of cysteine residues in the chains. Hence, the correct answer is option o1: disulphide.
By which bond the polypeptide chains are held together in fibrous protein ?
In fibrous proteins, polypeptide chains are primarily held together by hydrogen bonds and disulphide bonds. Hydrogen bonds provide stability to the protein's secondary structure, while disulphide bonds confer additional strength and rigidity. Therefore, the correct answer is option o4: 1 & 3.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Chemistry 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.