Tag: test for nutrients
Questions Related to test for nutrients
Oil is obtained from the plant and animal sources can be detected by
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Oil paper test
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Starch
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Calcium sulphate solution
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Iodine solution
Which of the following helps in nutrient conservation?
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Leaching
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Mineralisation
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Nitrification
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Immobilisation
A.Leaching - the loss of water-soluble plant nutrients from the soil. It does not help in nutrient conservation.
B.Mineralisation – The process of formation of minerals from the organic compounds is called mineralisation. It helps in nutrient conservation.
C.Nitrification – Formation of nitrites or nitrates from ammonia or nitrogenous compounds is called Nitrification. It also helps in nutrient conservation.
D. Immobilisation – elements, cannot be transported from one place to another place in the body is called Immobilisation and the elements are called Immobilised elements.
So, the correct option is ‘Mineralisation or Nitrification’.
Which of the following is made up of amino acids?
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Amylase
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Glycogen
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Phospholipid
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Polysaccharide
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Ribonucleic acid
Amylase is a protein enzyme, a polymer of amino acids. Glycogen is homopolysaccharide of D-glucose with highly branched structure (every 8-12 residues as compared to presence of branches in starch for every 24-30 residues). Phopholipids have phosphate and lipids (carbon and hydrogen atoms) while polysaccharides are polymer of simple sugars. RNA is polymer of ribonucleotides.
The different amino acids are joined together by peptide bonds to form
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Lipids
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Proteins
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Carbohydrates
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Nucleic acids
Proteins are the building blocks, which takes part in several metabolic reaction. They have four different levels of structure primary, secondary, tertiary and quaternary. There are 20 different standard L-α-amino acids used by cells for protein construction. Amino acids contain both a basic amino group and an acidic carboxyl group. This difunctionality allows the individual amino acids to join together in long chains by forming peptide bonds: amide bonds between the -NH2 of one amino acid and the -COOH of another. Sequences with fewer than 50 amino acids are generally referred to as peptides, while the terms protein or polypeptide are used for longer sequences. A protein can be made up of one or more polypeptide molecules. The end of the peptide or protein sequence with a free carboxyl group is called the carboxy-terminus or C-terminus. The terms amino-terminus or N-terminus describe the end of the sequence with a free α-amino group. The amino acids differ in structure by the substituent on their side chains. These side chains confer different chemical, physical and structural properties to the final peptide or protein.
So, the correct answer is option B.
Choose the correct answer from the alternatives given:
Amino acids are building blocks of
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Carbohydrates
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Nucleic acids
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Lipids
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Proteins
Amino acids are the building blocks of polypeptide chain or proteins. These are encoded by the triplet codons of mRNA. Each codon synthesizes a specific amino acid. Example: AUG for methionine, UUU for phenylalanine and so on. Amino acids are connected via the peptide bonds to form the proteins.
Which one of the following will be largely different in various animal species?
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Carbohydrates
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Fats
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Proteins
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Enzymes
Proteins are the polymers of amino acids linked with peptide bonds and perform various functions like carrier, enzyme or hormone. It is considered the most diverse molecule and differs from animal to animal. The diversity in proteins occurs due to the R group present which changes with the change in the amino acid.
Which ones are not true?
(a) Glycerol is a 3-carbon alcohol with 3-$OH$ groups as binding sites
(b) Waxes are esters of long chain alcohol and saturated fatty acids
(c) The term protein was coined by Mulder
(d) Agar is an indispensable polysaccharide being a complex polymer of glucose and sulphur containing carbohydrates
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a and c only
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d only
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a and d only
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a, b and d only
a) Glycerol has chemical formula of C$ _3$H$ _8$O$ _3$. 3 OH groups act as binding site. The carboxyl end of the fatty acid combines with the three -OH groups of the glycerol to form ester. The statement is true.
Proteins are a polymerisation product of
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Monosaccharides
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Muramic acid
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Amino acids
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All the above.
Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues. Amino acids are Linked by peptide bonds to form polypeptide chains. Proteins are linear polymers formed by linking the α-carboxyl group of one amino acid to the α-amino group of another amino acid with a peptide bond (also called an amide bond).
Select the correct option:
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Aspartic acid, glutamic acid
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Lysine, arginine
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Glycine, alanine
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Both (a) and (b)
An amino acid is the structural and functional unit of protein and are made up of carbon, hydrogen, oxygen, nitrogen and sometimes sulphur. These are organic acids with a carboxyl group and one amino group. Amino acid acts as a buffer.
Sugars are not as good as fats as a source of energy for cellular respiration, because sugars.
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Produce toxic amino groups when broken down
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Contain more hydrogen
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Usually bypass glycolysis and the Krebs cycle
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Contain fewer hydrogen atoms and electrons
Sugars, when broken down, produces toxic amino groups. During Cellular Respiration, sugar is broken down to CO$ _2$and H$ _2$O, and in the process, ATP is made that can then be used for cellular work. Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most. In glycolysis, the 6-carbon sugar, glucose, is broken down into two molecules.