Biomolecules Test 9

Lipids are actually triglycerides. A triglyceride consists of glycerol and fatty acids which are held together by ester linkages.

Arachidonic acid (ARA) is a 20-carbon chain fatty acid with four methylene-interrupted cis double bonds, the first with respect to the methyl end (omega, ω or n) is located between carbon 6 and 7. Hence, ARA belongs to the omega-6 (n-6) polyunsaturated fatty acids (PUFA), is designated as 20:4ω-6, with a biochemical nomenclature of all-cis-5,8,11,14-eicosatetraenoic acid.

The acid soluble pool has a roughly similar composition as that of cytoplasm. Biomolecules with molecular weights in the range of 18 — 800 Daltons come in the acid- soluble fraction (with the exception of lipids). Though, the macromolecules from cytoplasm and organelles represent the acid-insoluble fraction.

Galactose is a monosaccharide. When combined with glucose (monosaccharide), through a condensation reaction, the result is the disaccharide lactose. The hydrolysis of lactose to glucose and galactose is catalyzed by the enzymes lactase and β-galactosidase.
Chemical formula: C₆H₁₂O₆
Solubility in water: 650 g/L (20 °C)

Co,Na,Si,Se are beneficial elements...so, Na is not of much importance in plants .....

Calcium is the most abundant mineral in our body. It is essential for the development and maintenance of strong bones and teeth, where about 99% of the body's calcium is found. Calcium also helps the heart, nerves, muscles, and other body systems work properly. 

Therefore, the correct answer is option C.

Nucleic acids like DNA and RNA are made up of polymers of nucleotides. Nucleotides consists of two groups: purine and pyrimidine.

Purine are adenine and guanine whereas pyrimidine are cytosine, thymine and uracil.

Fehling's solution is used to determine whether a carbonyl-containing compound is an aldehyde or a ketone. Fehling's test can be used as a generic test for monosaccharides. Fehling's can be used to screen for glucose in urine, thus detecting diabetes.

The purines in DNA are adenine and guanine, the same as in RNA. The pyrimidines in DNA are cytosine and thymine; in RNA, they are cytosine and uracil. Purines are larger than pyrimidines because they have a two-ring structure while pyrimidines only have a single ring.

Maltose has a free aldehyde group which can be oxidized to the acidic groups. Hence, maltose is a reducing sugar. Starch and Cellulose are polysaccharides.
They are comprised of multiple units of glucose linked together. The glucose in starch and cellulose does not contain a free aldehyde group and hence, starch and cellulose do not act as reducing sugars.
Similarly, sucrose is a disaccharide in which the aldehyde group of glucose is used up in forming a bond between glucose and fructose.
Hence, sucrose is also not a reducing sugar.

A nucleoside is a compound which contains nitrogen bases i.e., purines and pyrimidines attached with the sugar molecule. When nucleoside attached with phosphate ion is called as a nucleotide. Thus, the correct answer is option A.

ATP stands for adenosine triphosphate. The energy released by oxidation of organic molecules is transferred into high energy phosphate bonds of ATP, which can be readily utilised when a cell needs energy. One of the three phosphates of ATP is broken down to release energy. Thus, ATP is the intermediate energy transferring compound.