Biology Practice Test 2




Biology Practice Test 2

Biology Practice Test 2 is designed to help students strengthen their understanding of key biological concepts, theories, and processes for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from molecular biology, cell division, human physiology, plant physiology, and more, helping students improve accuracy and retention.

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Biology Practice Test 2

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1 / 100

Category: Biology Ch 3 Class 11

The effect of competitive inhibitor on enzyme activity is such that it affects which of the following?

PMC Sample 2
Biology
Enzymes
Elimination Tool:

2 / 100

Category: Biology Ch 5 Class 11

Which of the following is NOT TRUE about Human Immunodeficiency virus (HIV)?

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

3 / 100

Category: Biology Ch 2 Class 12

Tendon is made up of:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

4 / 100

Category: Biology Ch 7 Class 12

Gametes in animals are produced by which of the following?

PMC Practice 2
Biology
Cell Cycle
Elimination Tool:

5 / 100

Category: Biology Ch 11 Class 11

Immediate source of energy for cellular respiration is:

NUMS 2016
Biology
Bioenergetics
Elimination Tool:

6 / 100

Category: Biology

Q.60 The part of spinal cord where interneurons present is called:

7 / 100

Category: Biology Ch 3 Class 12

Chlorosis, i.e., yellowish hue on the leaves results from

8 / 100

Category: Biology Ch 10 Class 11

Which group of organisms has the following features?

I. three pairs of jointed legs

II. three-part segmented body

III. one pair of antennae

NTS 2017
Biology
Kingdom Animalia
Elimination Tool:

9 / 100

Category: Biology Ch 5 Class 11

Virus is a _____ entity among living and non-living.

PMC Sample 2
Biology
Bio-diversity | Variety of Life
Elimination Tool:

10 / 100

Category: Biology Ch 3 Class 11

Which one forms the raw material for coenzymes?

11 / 100

Category: Biology Ch 6 Class 11

The DNA of the bacterium is present in a distinct region called:

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

12 / 100

Category: Biology Ch 6 Class 11

Tuberculosis is caused by?

NTS 2015 SMBBMC
Biology
Kingdom Prokaryote
Elimination Tool:

13 / 100

Category: Biology Ch 12 Class 11

Which type of mucosa cells secrete pepsinogen?

NUMS 2014
Biology
Nutrition
Elimination Tool:

14 / 100

Category: Biology Ch 9 Class 12

Cystic fibrosis patients lack a gene that codes for a transmembrane carrier of:

NTS 2017
Biology
Biotechnology
Elimination Tool:

15 / 100

Category: Biology Ch 12 Class 11

Midgut in cockroach is a short narrow tube called

16 / 100

Category: Biology Ch 1 Class 12

Which of the following structure in plant’s body is called excretophores?

17 / 100

Category: Biology Ch 4 Class 11

_______ organelles are involved in the synthesis of the plant cell wall.

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

18 / 100

Category: Biology

Q.66 Which one of the following is a non-protein group covalently bonded to a few respiratory enzymes among others?

19 / 100

Category: Biology Ch 6 Class 11

The size of Spirochete is

20 / 100

Category: Biology Ch 7 Class 12

In gametogenesis, which resultant product is non-functional?

NTS 2019
Biology
Cell Cycle
Elimination Tool:

21 / 100

Category: Biology

Q.30  Arterial blood contains ___________of CO2/100 ml of blood:

22 / 100

Category: Biology Ch 9 Class 11

Which type of leucoplasts store lipids?

NUMS 2020
Biology
Kingdom Plantae
Elimination Tool:

23 / 100

Category: Biology Ch 8 Class 11

Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called?

PMC Sample 2
Biology
Kingdom Fungi
Elimination Tool:

24 / 100

Category: Biology Ch 10 Class 12

On Galapagos island, among the birds, ____ caught much attention of Darwin in formulating his work, related to adaptations.

NUMS 2019 Reconduct
Biology
Evolution
Elimination Tool:

25 / 100

Category: Biology Ch 8 Class 12

If a heterozygous individual shows the complete effect of both alleles, the type of inheritance would be

26 / 100

Category: Biology

Q.65 How are flat worms not similar to round worms?

27 / 100

Category: Biology Ch 8 Class 12

Mendel concluded that each organism has two hereditary factors for each trait, now called:

NTS 2015 SMBBMC
Biology
Variation and Genetics
Elimination Tool:

28 / 100

Category: Biology Ch 3 Class 11

Enzymes work by which of the following?

PMC Practice 1
Biology
Enzymes
Elimination Tool:

29 / 100

Category: Biology Ch 5 Class 12

The only promoter of leaf senescence in the following plant hormones is?

PMC Sample 3
Biology
Growth and Development
Elimination Tool:

30 / 100

Category: Biology Ch 7 Class 11

Of the following which one has glassy shells?

31 / 100

Category: Biology

What type of virus is the smallpox virus?

NUMS Mock 1
Biology
Bio-diversity | Variety of Life

32 / 100

Category: Biology Ch 10 Class 12

Modification in the organization of the basic pentadactyl limb structure found in vertebrates provides good evidence for the principle of:

NUMS 2020
Biology
Evolution
Elimination Tool:

33 / 100

Category: Biology Ch 11 Class 11

Exposure to ______ light is effective in photosynthesis as it enables guard cells to take up K+ and opening of stomata.

NUMS 2019 Reconduct
Biology
Bioenergetics
Elimination Tool:

34 / 100

Category: Biology Ch 8 Class 12

Haemophilia occurs because of:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

35 / 100

Category: Biology

The rate of photosynthesis and respiration may equal one another at what time?

NUMS Mock 4
Biology
Bioenergetics

36 / 100

Category: Biology Ch 3 Class 11

The structure of an enzyme is altered by:

37 / 100

Category: Biology

The system responsible for fighting the pathogens is:

NUMS Mock 4
Biology
Transport

38 / 100

Category: Biology

Optimum pH for action of pepsin and salivary amylase is

NUMS Mock 2
Biology
Nutrition

39 / 100

Category: Biology Ch 4 Class 12

Example of ovoviviparous

 

40 / 100

Category: Biology Ch 10 Class 12

Mating with non-relatives is known as?

PMC Sample 2
Biology
Evolution
Elimination Tool:

41 / 100

Category: Biology Ch 4 Class 12

In biennials and perennials, low temperature stimulus is not received by

42 / 100

Category: Biology Ch 8 Class 12

A monohybrid cross yielded 3:1 in F2. What could be mode of inheritance?

43 / 100

Category: Biology Ch 9 Class 12

In the commercial manufacture of insulin, a human gene is inserted into which one of the following?

NTS 2013
Biology
Biotechnology
Elimination Tool:

44 / 100

Category: Biology

Among the following, which cellular organelle contains circular DNA, similar to those found in bacteria?

NUMS Mock 1
Biology
Cell Structure and Function

45 / 100

Category: Biology Ch 7 Class 12

Chance of a cross over between two loci is directly proportional to their

UHS 2018
Biology
Cell Cycle
Elimination Tool:

46 / 100

Category: Biology Ch 11 Class 11

FADH2 is produced during which step of Krebs cycle?

NUMS 2015
Biology
Bioenergetics
Elimination Tool:

47 / 100

Category: Biology Ch 6 Class 11

Some bacteria ranging occasionally a size of 500 ?m in length are

48 / 100

Category: Biology Ch 8 Class 12

The trait “Kernel colour in corn” in controlled by how many pairs of genes

49 / 100

Category: Biology Ch 4 Class 12

Referring to sexual reproduction, humans are:

NTS 2018
Biology
Reproduction
Elimination Tool:

50 / 100

Category: Biology Ch 7 Class 12

Which statement is incorrect?

51 / 100

Category: Biology

Most enzymes have an optimum temperature of around:

NUMS Mock 4
Biology
Enzymes

52 / 100

Category: Biology Ch 3 Class 12

All of the following hormones are secreted from anterior lobe of pituitary gland BUT:

NUMS 2019 Reconduct
Biology
Coordination and Control
Elimination Tool:

53 / 100

Category: Biology Ch 5 Class 11

The shape of the tobacco mosaic virus is:

NUMS 2016
Biology
Bio-diversity | Variety of Life
Elimination Tool:

54 / 100

Category: Biology Ch 3 Class 12

Hepatic and Pancreatic secretions are also stimulated by a hormone called:

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

55 / 100

Category: Biology Ch 9 Class 11

Which one of the following is not in the group of Gymnosperm?

NTS 2012
Biology
Kingdom Plantae
Elimination Tool:

56 / 100

Category: Biology Ch 8 Class 12

The law of dominance is illustrated in the garden pea by:

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

57 / 100

Category: Biology

Q.27 During which of the following levels of biological organization can natural selection occur?

58 / 100

Category: Biology

Pick the correct option about Drosophila.

NUMS Mock 3
Biology
Variation and Genetics

59 / 100

Category: Biology

Q.32 Lymphocytes are found in:

60 / 100

Category: Biology

The autonomic nervous system controls all of the following activities except:

NUMS Mock 1
Biology
Coordination and Control

61 / 100

Category: Biology

Q.59 NADH produced during glycolysis and Krebs cycle will oxidized by:

62 / 100

Category: Biology Ch 8 Class 12

The position of a gene on chromosome is called

63 / 100

Category: Biology Ch 4 Class 11

Which of the following is NOT the function of cell membranes?

NTS 2018
Biology
Cell Structure and Function
Elimination Tool:

64 / 100

Category: Biology Ch 4 Class 11

Autophagosomes are

65 / 100

Category: Biology Ch 10 Class 11

The function of coelom is

66 / 100

Category: Biology Ch 14 Class 11

Choose the correct pathway for the flow of blood:

NUMS 2020
Biology
Transport
Elimination Tool:

67 / 100

Category: Biology Ch 11 Class 11

Carbon dioxide joins the photosynthetic pathway at:

NTS 2018
Biology
Bioenergetics
Elimination Tool:

68 / 100

Category: Biology

Which of the following basic structural level of proteins is indicated by an association of two alpha and two beta chains in the haemoglobin molecule?

NUMS Mock 2
Biology
Biological Molecules

69 / 100

Category: Biology Ch 2 Class 12

The number of muscles in a human body is about:

NTS 2012
Biology
Support and Movement
Elimination Tool:

70 / 100

Category: Biology Ch 8 Class 12

Baldness is most frequent in

71 / 100

Category: Biology Ch 10 Class 11

Coelom that develops from the archenteron as outpouching is

72 / 100

Category: Biology

Q.23 During inspiration, the diaphragm:

73 / 100

Category: Biology Ch 4 Class 11

Which property of water helps to maintain the integrity of lipid-containing membranes?

PMC 2020
Biology
Cell Structure and Function
Elimination Tool:

74 / 100

Category: Biology Ch 4 Class 12

Only one ovary is functional at a time in:

NUMS 2015
Biology
Reproduction
Elimination Tool:

75 / 100

Category: Biology Ch 4 Class 11

Magnifying power of electron microscope as compared to eye is

76 / 100

Category: Biology Ch 11 Class 11

Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.

77 / 100

Category: Biology

5 different amino acids, numbered 1, 2, 3, 4, and 5, below from the following sequence in the path of a polypeptide chain:

1-2-3-4-2-5-3

Messenger RNA codon, which correspond to the amino acids, are:
amino acid 1 UGU

amino acid 2 GAU

amino acid 3 CAC

amino acid 4 UAG

amino acid 5 AAG

Which one of the following DNA bases sequences could provide the code for the given section of the polypeptide?

NUMS Mock 2
Biology
Biological Molecules

78 / 100

Category: Biology

Erythroblastosis foetalis occurs when:

NUMS Mock 2
Biology
Variation and Genetics

79 / 100

Category: Biology Ch 6 Class 11

When was the bacteriophage phenomena rediscovered by D’Herelle?

PMC Practice 4
Biology
Kingdom Prokaryote
Elimination Tool:

80 / 100

Category: Biology Ch 13 Class 11

Breathing is considered as a:

PMC Practice 1
Biology
Gaseous Exchange
Elimination Tool:

81 / 100

Category: Biology Ch 5 Class 12

Germ layers are formed in which stage of development?

NUMS 2020
Biology
Growth and Development
Elimination Tool:

82 / 100

Category: Biology Ch 3 Class 11

A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called

83 / 100

Category: Biology Ch 2 Class 11

Cell wall is made up of:

NUMS 2016
Biology
Biological Molecules
Elimination Tool:

84 / 100

Category: Biology Ch 6 Class 12

Central dogma is

85 / 100

Category: Biology Ch 3 Class 12

Which of the following is not the function of the cerebrum?

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

86 / 100

Category: Biology Ch 14 Class 11

Which of the following is NOT a part of the immune system?

NTS 2018
Biology
Transport
Elimination Tool:

87 / 100

Category: Biology Ch 4 Class 11

Which of the following cells does not have nucleus?

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

88 / 100

Category: Biology Ch 4 Class 11

What is the role of cholesterol in the cell membrane?

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

89 / 100

Category: Biology Ch 4 Class 11

Strengthening material of prokaryotic cell wall is

90 / 100

Category: Biology

Q.52 The plasma pool of antibodies is synthesized from:

91 / 100

Category: Biology Ch 5 Class 11

Viral disease that is widely spread and caused by enveloped RNA virus is:

NUMS 2015
Biology
Bio-diversity | Variety of Life
Elimination Tool:

92 / 100

Category: Biology Ch 12 Class 12

End of earth’ is related to

93 / 100

Category: Biology

Hemoglobin carries more oxygen than plasma by:

NUMS Mock 1
Biology
Gaseous Exchange

94 / 100

Category: Biology Ch 5 Class 11

Five steps of the lytic cycle of a T4 stage are given below:

The T4 phage uses its tails to stick to specific receptor
The cell’s metabolic machinery, directed by phage DNA, produces phage proteins and nucleotides from the cells degraded DNA are used to make copies of the phage genome.
The phage then directs production of an enzyme that digests the cell.
The empty capsid of the phage is left as a ghost outside the cell
The sheath of the tail contracts, thrusting a hollow core through the wall and membrane of the cell.
Which of the following is the correct sequence of the cycle?

NTS 2015 SMBBMC
Biology
Bio-diversity | Variety of Life
Elimination Tool:

95 / 100

Category: Biology Ch 5 Class 11

The size of poxvirus is:

96 / 100

Category: Biology

The hormone which controls the uptake of Sodium ions in kidney and its maintenance in blood plasma is:

NUMS Mock 2
Biology
Coordination and Control

97 / 100

Category: Biology

The smaller (40S) of ribosome combines with larger subunit (60S) in the presence of Mg2+ ion to form _____ particle.

NUMS Mock 3
Biology
Cell Structure and Function

98 / 100

Category: Biology

Which vertebrae together are called pelvic vertebrae?

NUMS Mock 2
Biology
Support and Movement

99 / 100

Category: Biology Ch 6 Class 12

A fern has _____ pairs of chromosomes.

NTS 2012
Biology
Chromosomes and DNA
Elimination Tool:

100 / 100

Category: Biology Ch 13 Class 12

Endangered species are

Your score is

The average score is 57%

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Structured Practice for Best Entry Test Preparation

This topic-wise and chapter-wise practice test allows students to focus on individual biology concepts, including diagrams, processes, and conceptual questions. Regular practice enhances understanding, sharpens problem-solving skills, and builds confidence to tackle both board and competitive exam questions efficiently.

Free Resources for Best Entry Test Preparation

Students can access free Biology Practice Test 2 to systematically improve knowledge, recall, and problem-solving abilities. This test is suitable for FSC Board Exams as well as major entry tests, helping students perform better in the biology section. PLS Academy provides these resources to support students in their preparation.

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