Q.1. Biomolecules Chapter Exam Instructions. These are lightest elements that are capable of forming covalent bonds. What is the RDA for vitamin B1? (d) unbranched chain of glucose molecules linked by a-1, 4 glycosidic bond. In which of the following groups are all polysaccharides? Please Like and share on Facebook. (a): Minor element are those which are required in quantity of less than milligram/gram of dry matter but they are essential for proper growth and development of an organism e.g., CI, Mn, B, Zn, Cu, Mo etc. (b): Cellulose is the most abundant carbohydrate. Answer: (i) Peptide linkage: A peptide linkage is an amide linkage formed between – COOH group of one α-amino acid and NH 2 group of the other a-amino acid by loss of a molecule of water. Aminoacids have many functional groups in their structure. (a): The bases are of two types-purines and pyrimidines. Short Questions: 26 Short Questions With Answers on “Organism and Populations” 15 Short Questions With Answers on “Food Production” 24 Short Questions With Answers on “Ecosystem” ADVERTISEMENTS: 25 Short Questions With Answers on “Use of Microbes Biology Important Questions Class 11 are given below. It is a fibrous glucosan homopolysaccharide of high tensile strength. The heme group is a highly conjugated ring system (which means its electrons are very mobile) surrounding a metal ion, which readily interconverts between the oxidation states. Here is the Huge Collection of Biology Questions, Multiple Choice Questions (MCQs), Short Questions with Answers for Biology Students. Email. ... Short term energy. 15. These non polar proteins give them water repellent or hydrophobic property. (a): Glycoproteins are proteins that contain sugars like carbohydrates as prosthetic group. Carbohydrates - absolute configuration, epimers, common names. Cytochromes are thus capable of performing oxidation and reduction. As C, H, O and N are lightest elements so the bonds they form are the strongest covalent bonds. Biomolecules Class 12 Important Questions Short Answer Type SA-I. (d): Water is the most abundant substance of living beings. It is the major store of carbohydrate energy in animal cells. 8. Smaller quantities of the elements required are Na, K, Mn, Ca, Fe, Mg, CI, Mg, CI, I, Co, Bo. You also get idea about the type of questions and method to answer in your Class 11th examination. 12. Living organisms have more gold in them than inanimate objects, b. In the table below, use an X to indicate if there are homopolymer or heteropolymer examples for each of the four types of biomolecules. For many cytochromes the metal ion present is that of iron, which interconverts between Fe2+ (reduced) and Fe3+ (oxidized) states (electron-transfer processes) or between Fe2+ (reduced) and Fe3+ (formal, oxidized) states (oxidative processes). Cellulose, the most important constituent of plant cell wall is made up of, (a) branched chain of glucose molecules linked by (3-1, 4 glycosidic bond in straight chain and a-1, 6 glycosidic bond at the site of branching, (b) unbranched chain of glucose molecules linked by (3-1, 4 glycosidic bond, (c) branched chain of glucose molecules linked by a-1, 6 glycosidic bond at the site of branching. 25 Questions Show answers. Galactose is a reducing sugar. 26. World’s Largest Collection of Essays! Short Answer Type Questions. ATP is a nucleotide as it is composed of adenine, ribose sugar and phosphoric acid. (a): All those sugars which have free aldehyde or ketone group are called reducing sugars. Tags: Question 28 . 29. 1 Biomolecules: MCQs Quiz - 01 1 answer. 7. In double helix of DNA, the two DNA strands are (a) coiled around a common axis ADVERTISEMENTS: (b) coiled around each other (c) coiled differently (d) coiled over protein sheath. Check important questions and answers for Class 12 Chemistry Board Exam 2020 from Chapter 14 - Biomolecules. How are prosthetic groups different from co-factors? Glycine and Alanine are different with respect to one substituent on the α -carbon. The complex formed is called emulsions. Equal to the number of branches plus one, d. Two, one on the left side and another on the right side, Enzymes are bio catalysts. About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and. Reaction given below is catalysed by oxidoreductase between two substrates A and A’, complete the reaction. These short solved questions or quizzes are provided by Gkseries. For many enzymes, activity is influenced by surrounding pH. (d): Amino acids are mostly synthesized from a-ketogluaric acid. Choose your answers to the questions and click 'Next' to see the next set of questions. 22. SURVEY . A five carbon compound formed during kreb’s cycle is a a-ketoglutaric acid which is the first diearboxylic acid formed. More answer short questions will be updated from recent exams. Multiple Choice Questions (Type-I) Proteins are long chains of aminoacids linked to each other by peptide bonds. Stores genetic information. The water content of actively living cells varies between 60-95%. (a): Lactose is popularly known as milk sugar. 1. A nucleotide is formed of 95% water. Many organic substances are negatively charged e.g., acetic acid, while others are positively charged e.g., ammonium ion. a. Polysaccharide ___________________________. (c): Proteins show enormous diversity because of different proportions and sequences of twenty amino acid within the protein molecule. Pyruvic acid converted into alanine, a-ketoglutaric acid into glutamic acid, OA’A into aspartic acid. Carbohydrates - naming and classification. Biomolecules have a wide range of sizes and structures and perform a vast array of functions. 26. 20. The pyrimidine, cytosine is same in both while the other pyrimidine thymine of DNA is replaced by uracil in RNA. 20. Biomolecules and the Chemistry of Life Answers. a. 10. Proteins, polysaccharides and nucleic acids are insoluble in mineral acid and get precipitated. 28. Here you can get Class 12 Important Questions Chemistry based on NCERT Text book for Class XII.Chemistry Class 12 Important Questions are very helpful to score high marks in board exams. C, H, O, N, P, S. These elements contribute to the structural organization of living organisms. Publish your original essays now. In general they reduce activation energy of reactions. Nitrogen forms DNA base pairs. It is a long, double” chain of deoxyribonucleotide, or deoxyribotide, units. Nucleic acids exhibit secondary structure. In most glycoproteins, the linkage is between asparagine and N- acetyl-D-glucosamine. Describe the other steps till the formation of product. Cytochrome, phytochrome. Section 391 of Code of Criminal Procedure, 1973 (Cr.P.C.) None of these. In the table below, use an X to mark the types of atoms found in the four types of biomolecules. Nucleic acids exhibit secondary structure, justify with example. Polymerization of such amino acids results into formation of proteins. 14. Some examples of enzyme mediated reactions are given below. The functional groups in amino acids are weak bases and acids chemically, the ionization is … Animals obtained these by eating plants and drinking water. They are common to both DNA and RNA. Nucleotides are building blocks of nucleic acids. Short Answer Questions for Biomolecules - CBSE Class 12-science Chemistry on Topperlearning. proteins. Question 26. Movement. In the given question there are 4 pyrimidines as 2 cytosine and 2 thymine in optional. Amino acids are mostly synthesised from. Chloride ion enhances activity of salivary amylase. 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