Biological Molecules Mcqs Online Test 1

Instructions for Chapter Biological Molecules Online Test Mdcat-2023:

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Test Details:

Subject: Biology
Class: 1st year or 11
Chapter name: Biological Molecules
Test: MDCAT 2023
Book: Sindh Textbook
Total No. Of MCQS: 50
Time Allowed: 50 Minutes

1379

Created on July 13, 2023 By

medicoengineer.com

Mdcat Biology XI Biomolecules Mcqs test 1

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NameEmailPhone Number

1 / 50

1. Which one of the following is purine:

a) cytosine

b) uracil

c) guanine

d) thymine

2 / 50

2. Which one of the following correct sequence from primary to quaternary structure of protein:

a) insulin--spider web-- hemoglobin -- myoglobin

b) insulin--spider web-- muscle hemoglobin --hemoglobin

c) hemoglobin -- myoglobin --spider web --insulin

d) none of these

3 / 50

3. Steroid consist of ----- 6 member carbon ring and one 5 member carbon ring:

a) 1

b) 2

c) 3

d) 4

4 / 50

4. Ribose and ribulose are examples of class:

a) Pentose

b) hexose

c) heptose

d) triose

5 / 50

5. Which of the following is true:

a) glucose+fructose= maltose

b) glucose+ galactose= sucrose

c) glucose +glucose = maltose

d) glucose+glucose= lactose

6 / 50

6. The formula of glyceraldehyde is:

a) C3H603

b) C3H604

c) C6H605

d) C6H1206

7 / 50

7. A lipid molecule is composed of glycerol and fatty acid in ratio of:

a) 1:1

b) 1:3

c) 3:2

d) 1:2

8 / 50

8. Name of protein given by :

a) G J murlder

b) J J Berzelius

c) kunhi

d) Fischer

9 / 50

9. Bond present in amylose:

a) beta 1,4 glycosidic

b) alpha 1,4 glycosidic

c) alpha 1,6 glycosidic

d) none of these

10 / 50

10. Most abundant disaccharide is:

a) sucrose

b) galactose

c) lactose

d) maltose

11 / 50

11. How many carbons atom in steroid nucleus?

a) 15

b) 16

c) 17

d) 18

12 / 50

12. If 25% of adenine found in DNA what is percentage of uracil in DNA:

a) 25%

b) 50%

c) 35%

d) none of these

13 / 50

13. Which one of the following don't have glycosidic linkage:

a) sucrose

b) cellulose

c) glucose

d) glycogen

14 / 50

14. Glucose + fructose=

a) lactose

b) galactose

c) sucrose

d) sucrose + H2O

15 / 50

15. In one amino acid at least carbon ---- and nitrogen number --- respectively.

a) 2 and 1

b) 1 and 2

c) 1 and 1

d) 2 and 3

16 / 50

16. In sickle cell anemia which chain of hemoglobin will be effected:

a) alpha

b) beta

c) Gamma

d) alpha 2

17 / 50

17. Hemoglobin relative which category of protein structure:

a) secondary

b) primary

c) tertiary

d) quaternary

18 / 50

18. Carbohydrates are organic molecules and contain three elements:

a) C,H2O, O

b) C,N,H

c) Ca,S,H

d) C,H,O

19 / 50

19. What is average percentage of protein in bacterial cell:

a) 18

b) 15

c) 50

d) 4

20 / 50

20. Which one of the following is common in both DNA and RNA

a) uracil

b) Pentose sugar

c) nitrogenous base

d) acid

21 / 50

21. Cellular secretion mainly in form of:

a) glycolipid

b) protein

c) glycoprotein

d) none of these

22 / 50

22. Nitrogenous base of DNA is (AGTA) if transcription occur then strand is formed of:

a) AGTA

b) UCAU

c) UTTG

d) UCGU

23 / 50

23. In DNA Adenine and thymine held by

a) single hydrogen bond

b) double hydrogen bond

c) triple hydrogen bond

d) phosphodiester bond

24 / 50

24. How many numbers of nitrogenous base in each turn of DNA:

a) 20

b) 10

c) 25

d) 40

25 / 50

25. Two monosaccharides linked by each other :

a) peptide linkage

b) glycosidic linkage

c) ester

d) phospho Di ester bond

26 / 50

26. Which one the following is peptide bond is

a) -C-N

b) -C-S

c) -N-P

d) -C-P

27 / 50

27. Which one of the following biomolecule percentage more in bacterial cell as compare to mammals

a) protein

b) carbohydrates

c) dextrin

d) RNA

28 / 50

28. which one of the following nitrogenous base absent in DNA

a) thymine

b) uracil

c) cytosine

d) adenine

29 / 50

29. the step of protein synthesis in which the information contained specific segment of DNA is copied into RNA

a) transduction

b) translation

c) transformation

d) transcription

30 / 50

30. NAD is example of

a) mononucleotide

b) dinucleotide

c) coenzyme

d) both B and C

31 / 50

31. It is estimated that a person of average size contains 16 Kg of fat which equivalent to:

a) 244000K.cal

b) 164000 K.cal

c) 144000 K.cal

d) 188000 K.cal

32 / 50

32. Animals store the glycogen in:

a) liver

b) muscle

c) both of these

d) none of these

33 / 50

33. In RNA the nitrogenous base that take place of thymine is:

a) adenine

b) uracil

c) cytosine

d) guanine

34 / 50

34. hormone is example of functional class of protein

a) contractile

b) structural

c) regulatory

d) transportive

35 / 50

35. The sum of all chemical reaction occur in body is known as:

a) catabolism

b) metabolism

c) Anabolism

d) all of these

36 / 50

36. Each of the 20 naturally occurring amino acid has a different

a) NH2 group

b) -COOH group

c) -OH group

d) R group

37 / 50

37. In amino acid R group replace by H group the amino acid is called:

a) Alanine

b) glycine

c) valine

d) leucine

38 / 50

38. dextrin contain monosaccharide Number:

a) 2-10

b) 3-10

c) 2-9

d) 2-12

39 / 50

39. Nucleotide have a nitrogenous base attached to sugar at:

a) 1 carbon

b) 2 carbon

c) 3 carbon

d) 4 carbon

40 / 50

40. The six bio elements that make up 98% of protoplasm:

a) C,H,O,N,Mg+,K+

b) C,H,O,N,Mg+,Na+

c) C,H,O,N,P,S

d) C,H,O,Cl- ,K

41 / 50

41. plants and animals store the carbohydrates in the form respectively

a) glycogen, cellulose

b) glycogen , starch

c) starch, glycogen

d) starch, cellulose

42 / 50

42. general formula of monosaccharides is

a) C2H2O2

b) CH2O

c) (CH2O)n

d) none of these

43 / 50

43. percentage of water found in cell is:

a) 70-90

b) 90-95

c) 50-60

d) 40-70

44 / 50

44. which one of the following is mismatch:

a) protein.. Peptide bond

b) carbohydrates.. Glycosidic linkage

c) water..hydrogen bond

d) ester.. Phosphodiester bond

45 / 50

45. Carbon is:

a) monovalent

b) divalent

c) trivalent

d) tetravalent

46 / 50

46. One amino acid different from other due to:

a) alpha carbon

b) R group

c) carboxyl group

d) amine group

47 / 50

47. Dry weight of protein in cell of mammals

a) 18%

b) 50%

c) 15%

d) none of these

48 / 50

48. Most abound organic molecule in any type of cell is.

a) water

b) lipid

c) protein

d) carbohydrate

49 / 50

49. Living portion of cell is

a) protoplasm

b) nucleus

c) cytoplasm

d) all of these

50 / 50

50. Dry weight of cell mainly constant of which element.

a) oxygen

b) Nitrogen

c) carbon

d) water

Your score is

The average score is 63%

Instructions for Chapter Biological Molecules Online Test Mdcat-2023:

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