F.Sc Part 1 Biology Test Chapter 02: Editable

 F.Sc Part 1 Biology Test Chapter 02: Editable

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Chapter 02: Biochemistry

1st Year 2021

TEST BIOLOGY 1ST YEAR DATED 15TH FEB 2021 (TEST NO.2)

Q#1. Encircle the correct Answer. 6

1. Those reactions in which simpler substances are combined to form complex substances are called:

a. Anabolic reactions      b. Biochemistry  c. Catabolic reactions       d. Redox reactions

2. Lipids made up ______ % of total  cell bacterial weight:

a. 70        b. 4      c. 15      d. 2

3. Which one is not included in examples of carbohydrates?

a. cotton and paper      b. starches present in cereals        c. enzymes        d. glycogen

4. All  enzymes  are _________ and  in  this  way  they  control  the  whole  metabolism  of  the  cell.

a. Carbohydrates      b. Lipids       c. Proteins     d. Nucleic Acids

5. The  helical structure  is  kept  by  the  formation  of ___________  among  amino  acid  molecules  in  successive turns  of  the  spiral.

a. hydrophobic interactions          b. ionic  bonds        c. disulfide bonds         d. hydrogen bonds

6. The  compound  formed  by  combination  of  a  base  and  a  pentose  sugar  is  called:

a. nucleoside          b. nucleotide          c. peptide  bond         d. Primary  structure

Q#2. Attempt all short questions with suitable examples, where necessary.                                   (7*2=14)

1. Chemical  composition  of  a  Bacterial  and  a  Mammalian  cell?

2. Define nucleoside.      3. Define Quaternary  structure of protein.      4. peptide  bond?         5. Why lipids store double amount of energy as compared to the same amount of any carbohydrate?     6. Anabolism?

7. Structure of amino Acid.

Q#3   Long questions (Attempt All) (5*2=10)

1. Detail note on IMPORTANCE OF WATER.   (5)

2. Explain Primary  structure of proteins. (5)

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