Question # 1

Chemical nature of most cellular secretions is.

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Proteins

Lipids

Glyco proteins

Carbohydrates

Keratin is an example of Fibrous protein present in

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Nails and Hair

Blood

Muscles

Bones

Which is the following is lipid.

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Chitin

Rubber

starch

Sucrose

80% of total RNA in the cell comprises of.

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mRNA

tRNA

rRNA

RNA -DNA Hybrid

The most abundant carbohydrates in nature

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Starch

Maltose

Cellulose

Glucose

Human tissues have 85% water is cells of

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Bone

Blood

Brain

Liver

Monosaccharide which are rare in nature and occur in some bacteria is

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Trioses

Tetroses

Hexoses

Pentoses

Glycogen is an example of a

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Polysaccharide only

Carbohydrate only

Phospholipid

Both a polysaccharide and a carbohydrate

Hemoglobin is a

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Fibrous proteins

Coiled proteins

Globular proteins

double coiled proteins

Helical shape of polypeptide is due to present within molecule.

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Covalent bond

Hydrogen bond

Disulphide bond

Peptide bond

Human tissues contains about 20% water in.

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Brain cells

Bone cells

Kidney cells

Skin cells

The melting point of palmitic acid is

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-8 ^oC

34 ^oC

63.1 ^oC

55.6 ^oC

The percentage of ribosomal RNA in the cell is.

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4%

20%

50%

80%

Keratin is an example of Fibrous protein present in.

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Muscles

Blood

Bones

Nails ad Hair

Which one of the following kinds of atom does not occur in carbohydrates

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Carbon

Hydrogen

Nitrogen

Oxygen

Number of amino acids in each turn of a helix. is.

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3.6

4.6

5.6

6.6

Animal obtain carbohydrates mainly from

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Glycogen

Cellulose

Glucose

Amino acids

In free state, glucose is present in.

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Amylose

Dates

Cellulose

Glycogen

The molecule formed by two amino acids called.

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Peptide linkage

Dipeptide

Peptide bond

Botha a and c

Amino acids are arranged in proper sequence during protein synthesis according to the instruction transcribed on

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Transfer RNA

Ribosomal RNA

Messenger RNA

DNA

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