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

Some enzymes require the presence of a non protein molecule to behave catalytically. An enzyme devoid of this molecule is called a(n):

NUMS Mock 1
Biology
Enzymes

2 / 100

Category: Biology Ch 5 Class 12

Germ cells give rise to:

NTS 2012
Biology
Growth and Development
Elimination Tool:

3 / 100

Category: Biology Ch 5 Class 11

Chicken pox is caused by:

NTS 2011
Biology
Bio-diversity | Variety of Life
Elimination Tool:

4 / 100

Category: Biology Ch 2 Class 11

When the hydroxyl group, -OH, of the carboxyl group, -COOH, of an amino acid is linked with the hydrogen of the amino group, -NH2, of another amino acid, ______ is released and a peptide bond is formed.

NUMS 2019 Reconduct
Biology
Biological Molecules
Elimination Tool:

5 / 100

Category: Biology Ch 9 Class 11

Which of the following is true in angiosperm life cycle?

NTS 2014
Biology
Kingdom Plantae
Elimination Tool:

6 / 100

Category: Biology

Q.21 When was the Tobacco mosaic virus successfully crystalized?

7 / 100

Category: Biology Ch 3 Class 11

The following statements are about enzymes:

1. They are globular proteins

2. They can be inhibited by competitive inhibitors

3. They are formed in the smooth endoplasmic reticulum

4. There are only found attached to Plasma membranes in the cell

Which statements are correct for all enzymes?

NTS 2015 DUHS and JSMU
Biology
Enzymes
Elimination Tool:

8 / 100

Category: Biology Ch 13 Class 12

Process ensuring the survival of species over long periods of time, even though individual members of the species die.

UHS 2018
Biology
Man and His Environment
Elimination Tool:

9 / 100

Category: Biology Ch 3 Class 11

If we add more substrate to an already occurring enzymatic reaction and it has no affect on the rate of reaction, the process is called?

PMC Practice 2
Biology
Enzymes
Elimination Tool:

10 / 100

Category: Biology Ch 2 Class 12

Which vertebrae together are called pelvic vertebrae?

NUMS 2020
Biology
Support and Movement
Elimination Tool:

11 / 100

Category: Biology Ch 3 Class 11

The type of energy, reduced by the enzymes, for biological reactions to occur is called the:

UHS 2019
Biology
Enzymes
Elimination Tool:

12 / 100

Category: Biology Ch 4 Class 11

Magnifying power of electron microscope as compared to eye is

13 / 100

Category: Biology Ch 7 Class 12

If a person has 44 autosomes + XXY, he will suffer from

UHS 2012
Biology
Cell Cycle
Elimination Tool:

14 / 100

Category: Biology Ch 8 Class 12

When both the alleles of a gene pair are same, the organism is said to be:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

15 / 100

Category: Biology Ch 8 Class 11

A plant disease which is not caused by a fungus is:

NUMS 2015
Biology
Kingdom Fungi
Elimination Tool:

16 / 100

Category: Biology Ch 13 Class 11

The voice box leads to the trachea which is also called

PMC Practice 1
Biology
Gaseous Exchange
Elimination Tool:

17 / 100

Category: Biology Ch 9 Class 12

Natural extrachromosomal circular DNA molecules earrying genes for antibiotic resistance and fertility

18 / 100

Category: Biology Ch 13 Class 11

Oxygen, released into the atmosphere, comes from:

NUMS 2020
Biology
Gaseous Exchange
Elimination Tool:

19 / 100

Category: Biology Ch 3 Class 12

Nissl’s granules are present in which part of the neuron?

20 / 100

Category: Biology Ch 8 Class 11

Lichen is a symbiotic mutualistic association of fungi with

21 / 100

Category: Biology Ch 2 Class 12

Joints found at the vertebrates are:

NTS 2014
Biology
Support and Movement
Elimination Tool:

22 / 100

Category: Biology Ch 6 Class 11

Cyanobacteria help in nitrogen fixation because they have:

PMC 2021 Tested
Biology
Kingdom Prokaryote
Elimination Tool:

23 / 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

24 / 100

Category: Biology Ch 8 Class 12

What is the risk of color blind baby boy in a family when mother is color blind but father is normal?

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

25 / 100

Category: Biology Ch 11 Class 11

At which times there is no net gaseous exchange between leaves and the atmosphere.

26 / 100

Category: Biology

The idea that opposed the idea of abiogenesis was proposed by?

NUMS Mock 4
Biology
Cell Structure and Function

27 / 100

Category: Biology Ch 12 Class 12

Temperature of temperate deciduous forests is

28 / 100

Category: Biology Ch 12 Class 11

Milk drinking babies have an additional enzyme called:

NUMS 2016
Biology
Nutrition
Elimination Tool:

29 / 100

Category: Biology Ch 11 Class 11

Which of the following processes does NOT need Pyruvic Acid as a substrate?

PMC 2020
Biology
Bioenergetics
Elimination Tool:

30 / 100

Category: Biology Ch 2 Class 11

Human cells maintain concentration gradients across their plasma membranes, such that there is a high sodium concentration outside the cell and a high potassium concentration inside the cell.

Suppose that within the cell membrane are sodium leak channels or carrier proteins. These channels would allow sodium to:

NTS 2017
Biology
Biological Molecules
Elimination Tool:

31 / 100

Category: Biology Ch 7 Class 12

During the formation of an ovum nondisjunction of the sex chromosomes occurred the ovum was then fertilized by a normal Y-bearing sperm cell which one of the following shows the sex chromosome complement of the resulting zygote?

NTS 2015 DUHS and JSMU
Biology
Cell Cycle
Elimination Tool:

32 / 100

Category: Biology Ch 13 Class 11

The passageways of the respiratory system mucous secreting cells called:

NTS 2019
Biology
Gaseous Exchange
Elimination Tool:

33 / 100

Category: Biology Ch 1 Class 12

Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of:

34 / 100

Category: Biology Ch 10 Class 12

According to the theory of natural selection, organisms produce:

UHS 2019
Biology
Evolution
Elimination Tool:

35 / 100

Category: Biology Ch 6 Class 11

Rod-shaped bacteria are known as _______

UHS 2018
Biology
Kingdom Prokaryote
Elimination Tool:

36 / 100

Category: Biology

Cardiac output is increased by all of the following EXCEPT:

NUMS Mock 2
Biology
Transport

37 / 100

Category: Biology

Lecithin is formed by combining phosphatidic acid with ______:

NUMS Mock 1
Biology
Biological Molecules

38 / 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:

39 / 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

40 / 100

Category: Biology Ch 4 Class 11

Which of the following is NOT a difference that would allow one to distinguish between a prokaryotic and a eukaryotic cell?

Presence of absence of the nucleus
Presence or absence of the cell wall
Membrane bound versus no membrane bound organelles
NTS 2013
Biology
Cell Structure and Function
Elimination Tool:

41 / 100

Category: Biology Ch 13 Class 11

As pH of blood decreases, H+ ions increases, which combine the proteins part of hemoglobin, to decrease its ability to bind with:

NUMS 2019 Reconduct
Biology
Gaseous Exchange
Elimination Tool:

42 / 100

Category: Biology Ch 9 Class 12

A genomic library is a collection of

43 / 100

Category: Biology Ch 5 Class 11

The size of smallest virus is:

44 / 100

Category: Biology Ch 10 Class 12

The ultimate source of all changes is:

NUMS 2015
Biology
Evolution
Elimination Tool:

45 / 100

Category: Biology Ch 2 Class 12

Dermal and denticle scales of fishes are called:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

46 / 100

Category: Biology Ch 6 Class 12

The phenomenon known as crossing-over occurs during:

NTS 2017
Biology
Chromosomes and DNA
Elimination Tool:

47 / 100

Category: Biology

Which of the following single membranous organelle is absent in plant cells?

 

48 / 100

Category: Biology Ch 10 Class 12

Which condition can be explained by Lamarckism?

PMC Sample 1
Biology
Evolution
Elimination Tool:

49 / 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:

50 / 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

51 / 100

Category: Biology Ch 1 Class 11

A series of hypothesis supported by the results of many tests is called

52 / 100

Category: Biology Ch 2 Class 11

Carbon atom is

53 / 100

Category: Biology Ch 13 Class 12

Driving force for all the cycles in ecosystem is

54 / 100

Category: Biology Ch 3 Class 11

When inhibitor binds to enzyme other than active site and alters its structure, then it is called:

NUMS 2020
Biology
Enzymes
Elimination Tool:

55 / 100

Category: Biology

Q.6 Outbreeding increases which of the following?

56 / 100

Category: Biology

Q.25  The substrate of the trypsin is:

57 / 100

Category: Biology Ch 4 Class 11

The most abundant organic compounds in a mammalian cell are:

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

58 / 100

Category: Biology Ch 3 Class 12

The spinal nerves are functionally:

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

59 / 100

Category: Biology Ch 14 Class 11

The only vein in the human body carrying oxygenated blood is:

NUMS 2020
Biology
Transport
Elimination Tool:

60 / 100

Category: Biology Ch 8 Class 12

The disease, which is caused by defect in a single gene or pair of genes is referred to as:

NTS 2016 SMBBMC
Biology
Variation and Genetics
Elimination Tool:

61 / 100

Category: Biology Ch 6 Class 11

Select a method which causes the oxidation of chemical constituent of a bacterial cell:

PMC 2020
Biology
Kingdom Prokaryote
Elimination Tool:

62 / 100

Category: Biology

Which of the following diseases is sexually transmitted?

NUMS Mock 1
Biology
Bio-diversity | Variety of Life

63 / 100

Category: Biology Ch 5 Class 12

Cytoplasmic localization is a consequence of:

NTS 2011
Biology
Growth and Development
Elimination Tool:

64 / 100

Category: Biology Ch 5 Class 12

In multicellular plants cell division occur by

65 / 100

Category: Biology

Q.19 Darwins theory mainly focuses o

66 / 100

Category: Biology Ch 9 Class 12

Passive immunity is used against:

UHS 2015
Biology
Biotechnology
Elimination Tool:

67 / 100

Category: Biology Ch 12 Class 11

In human gut, chylomicrons are formed by the combination of:

NUMS 2020
Biology
Nutrition
Elimination Tool:

68 / 100

Category: Biology Ch 5 Class 11

Which of the following category is most general with its members lest resembling with each other than the other categries:

69 / 100

Category: Biology Ch 2 Class 12

Select a sessile zooflagellate:

NUMS 2020
Biology
Support and Movement
Elimination Tool:

70 / 100

Category: Biology Ch 3 Class 12

Which type of sensory structures carry deep pressure and vibration sensations?

71 / 100

Category: Biology Ch 13 Class 11

Gaseous exchange through the skin is known as ______ respiration.

72 / 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:

73 / 100

Category: Biology

Q.12 An enzyme without its cofactor is called.

74 / 100

Category: Biology Ch 9 Class 11

The release of droplets of water from hydathodes is called:

PMC 2021 Tested
Biology
Kingdom Plantae
Elimination Tool:

75 / 100

Category: Biology Ch 4 Class 12

Gametes in animals are produced by

76 / 100

Category: Biology Ch 3 Class 12

Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?

PMC 2020
Biology
Coordination and Control
Elimination Tool:

77 / 100

Category: Biology Ch 7 Class 11

Radiolarians belong to which of the following protozoal group?

78 / 100

Category: Biology Ch 5 Class 11

Which of the following is NOT a viral disease?

NTS 2018
Biology
Bio-diversity | Variety of Life
Elimination Tool:

79 / 100

Category: Biology Ch 3 Class 12

The 1st human hormone produced by recombinant DNA technology was:

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

80 / 100

Category: Biology Ch 3 Class 12

The _____ may be a cell, neuron ending or an organ that receives the stimulus.

NUMS 2019 Reconduct
Biology
Coordination and Control
Elimination Tool:

81 / 100

Category: Biology Ch 3 Class 12

Which one of the following is a neurotransmitter?

NUMS 2020
Biology
Coordination and Control
Elimination Tool:

82 / 100

Category: Biology Ch 13 Class 11

Lungs are spongy due to the presence of million of

83 / 100

Category: Biology

It is the smallest eukaryote:

NUMS Mock 2
Biology
Kingdom Protista

84 / 100

Category: Biology

Erythroblastosis foetalis occurs when:

NUMS Mock 2
Biology
Variation and Genetics

85 / 100

Category: Biology Ch 4 Class 12

Which of these cycles operate in human females?

PMC Sample 2
Biology
Reproduction
Elimination Tool:

86 / 100

Category: Biology Ch 6 Class 11

Which of the following structure provides greater pathogenicity to the bacteria?

87 / 100

Category: Biology Ch 9 Class 12

DNA fingerprinting is basically done for:

NUMS 2015
Biology
Biotechnology
Elimination Tool:

88 / 100

Category: Biology Ch 7 Class 12

From each pair of centrioles ________ sets of microtubules originate

89 / 100

Category: Biology Ch 12 Class 12

Productivity of an ecosystem is indicated by

90 / 100

Category: Biology Ch 3 Class 11

Upon increasing the temperature the shape of enzyme’s active site?

PMC Sample 2
Biology
Enzymes
Elimination Tool:

91 / 100

Category: Biology Ch 3 Class 12

On land, frogs are:

NUMS 2014
Biology
Coordination and Control
Elimination Tool:

92 / 100

Category: Biology

Q.22 Which of the following is false about conjugation?

93 / 100

Category: Biology Ch 1 Class 11

The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by

94 / 100

Category: Biology Ch 6 Class 12

The total of all the alleles in a population is called a:

NUMS 2014
Biology
Chromosomes and DNA
Elimination Tool:

95 / 100

Category: Biology Ch 3 Class 11

Enzymes binds with chemical reactant which is known as?

PMC Sample 3
Biology
Enzymes
Elimination Tool:

96 / 100

Category: Biology Ch 10 Class 12

Which animals support Darwin’s view of inheritance of desirable variations?

NTS 2019
Biology
Evolution
Elimination Tool:

97 / 100

Category: Biology

The dark reactions of photosynthesis are characterized by:

NUMS Mock 1
Biology
Bioenergetics

98 / 100

Category: Biology Ch 4 Class 11

The following are all features of eukaryotic cells:

I. chloroplast

II. peroxisome

III. lysosome

IV. mitochondrion

v. nucleus

Which of these have a double membrane?

NTS 2014
Biology
Cell Structure and Function
Elimination Tool:

99 / 100

Category: Biology Ch 10 Class 11

Which of the following phyla of Kingdom Animalia do humans belong to?

NTS 2018
Biology
Kingdom Animalia
Elimination Tool:

100 / 100

Category: Biology Ch 3 Class 11

A student of chemical engineering mistakenly engulfed the toxic compound “A” which was a potent inhibitor of a certain enzyme. He was immediately brought to a hospital where the doctor injected, intravenously, substrate “B” to minimize the toxic effect of Compound A. His life was saved from serious damage. The treatment method shows that compound A was a ______ inhibitor.

UHS 2019
Biology
Enzymes
Elimination Tool:

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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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