Dr. Tarek El Sewedy Department of Medical Laboratory Technology Faculty of Allied Medical Sciences Faculty of Allied Medical Sciences

Mid term Revision

A.Choose the best answer: Biochemistry can be defined as the science concerned with 1.Chemical basis of life. 2.Studying chromosomes. 3.Studying effect of drugs on cancer cells. 4.Studying composition of blood cells. Biochemistry is concerned with the study of chemical reactions in: 1.Human. 2.Viruses. 3.Plant. 4.All of the above.

The monomers of Proteins are called: 1.DNA 2.Fatty acids. 3.Amino Acids 4.Enzymes. Which of the following is measured in serum and used for disease diagnosis: 1.DNA 2.Enzymes. 3.RNA 4.Cellulose.

The basic monomers of DNA are: 1.Fatty Acids. 2.RNA. 3.Amino Acids. 4.Nucleotide bases In carbohydrates, For every carbon there is: 1.2 hydrogen atoms and 1 oxygen atom. 2.2 oxygen atoms and 1 hydrogen 3.2 hydrogen atoms and 2 oxygen 4.1 oxygen atom and 1 hydrogen

Complex carbohydrates are: 1.Carbohydrates with monomers of the same type 2.Carbohydrates with monomers of different type 3.Carbohydrate joined to non-carbohydrate molecules. 4.None of the above. Sucrose is an example of : 1.Monosaccharide 2.Disaccharide 3.Polysaccharide 4.Oligosaccharide

Glycogen is a polysaccharide formed of monomers of: 1.Galactose 2.Cellulose 3.Glucose 4.Maltose The most common storage polysaccharide in plants is: 1.Maltose 2.Lactose 3.Fructose 4.Starch

Which of the following is known as animal starch: 1.Glycogen. 2.Galactose 3.Lactose 4.None of the above Write the four major classes of biomolecules: Write 3 major functions of carbohydrates:

The monomers of Lipids are called: 1.DNA 2.Fatty acids. 3.Amino Acids 4.Nucleotide bases. Which of the following is measured in serum and used for disease diagnosis: 1.DNA 2.Enzymes. 3.RNA 4.Cellulose.

1.In carbohydrates, For every carbon there is: 2.1 hydrogen atoms and 1 oxygen atom. 3.2 oxygen atoms and 1 hydrogen 4.2 hydrogen atoms and 2 oxygen 5.1 oxygen atom and 2 hydrogen 1.Glycolipids are example of : 2.Polysaccharides. 3.Carbohydrates with monomers of different type. 4.Complex carbohydrates. 5.None of the above.

Fructose is an example of : 1.Aldose 2.Ketose 3.Polysaccharide 4.None of the above Excess glucose is stored in human liver in the form of 1.Amylopectin 2.Amylose 3.Glycogen 4.Starch

A.True or False: 1.Lipids are Hydrophylic in nature ( true-False) 1.A triglyceride is a lipid molecule (true-false) 1. All 20 amino acids are biologically essential (True – False)

Write 3 major functions of Amino acids: Write 3 major functions of Lipids Mention the reason why glycogen is highly branched than starch

Principles of Biochemistry, Donald J. Voet, Judith G. Voet, Charlotte W. pratt; Willey, 3 rd ed.