Biology Practice Test 3


0%
413
Created by Ali Durrani

MDCAT Practice Tests

Biology Practice Test 3

1 / 100

Category: Biology Ch 6 Class 11

The first simplest oxygen producing organism:

NUMS 2016
Biology
Kingdom Prokaryote
Elimination Tool:

2 / 100

Category: Biology Ch 13 Class 11

Four plants are present in different environmental conditions. Plant A is present in a warm climate with continuous rainfall, plant B is present in a cool forest, plant C is present in a warm climate with little breeze, while plant D is present in a warm climate with high wind speed. Which one of the above plants will have the highest rate of transpiration?

UHS 2019
Biology
Gaseous Exchange
Elimination Tool:

3 / 100

Category: Biology Ch 2 Class 11

Lecithin is formed by combining phosphatidic acid with ______:

NUMS 2020
Biology
Biological Molecules
Elimination Tool:

4 / 100

Category: Biology Ch 3 Class 12

Four events in the transmission of nerve impulses across synapses are:

I. depolarisation of the presynaptic membrane

II. propagation of postsynaptic action potential

III. reabsorption of the transmitter substance

IV. release of transmitter substance into the synaptic cleft

In which sequence do these events occur?

FIRST -> LAST

NTS 2014
Biology
Coordination and Control
Elimination Tool:

5 / 100

Category: Biology Ch 7 Class 11

Lime stone deposits are formed from

6 / 100

Category: Biology Ch 9 Class 11

Which one of the following types of cell are found in secondary xylem of angiosperms?

NTS 2015 DUHS and JSMU
Biology
Kingdom Plantae
Elimination Tool:

7 / 100

Category: Biology Ch 9 Class 11

Mosses are included in sub-division

8 / 100

Category: Biology Ch 2 Class 11

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?

NTS 2015 DUHS and JSMU
Biology
Biological Molecules
Elimination Tool:

9 / 100

Category: Biology

_____ are more common in human males and females.

NUMS Mock 3
Biology
Variation and Genetics

10 / 100

Category: Biology Ch 10 Class 12

Genetic equilibrium is a:

NTS 2019
Biology
Evolution
Elimination Tool:

11 / 100

Category: Biology Ch 7 Class 11

Brown algae are also known as

12 / 100

Category: Biology

The system involved in preparing our body in condition of stress and emergency:

NUMS Mock 2
Biology
Coordination and Control

13 / 100

Category: Biology Ch 8 Class 11

Yeasts, the unicellular fungi belongs mostly to the group:

UHS 2018
Biology
Kingdom Fungi
Elimination Tool:

14 / 100

Category: Biology Ch 3 Class 11

Which of the following statements is incorrect?

PMC Sample 1
Biology
Enzymes
Elimination Tool:

15 / 100

Category: Biology Ch 6 Class 11

Gram negative bacteria are stained pink by the use of:

NUMS 2016
Biology
Kingdom Prokaryote
Elimination Tool:

16 / 100

Category: Biology Ch 14 Class 11

The cells which play a very important role in developing immunity are:

NUMS 2020
Biology
Transport
Elimination Tool:

17 / 100

Category: Biology

Photosystems are located in _

18 / 100

Category: Biology

Q.8 The neurons responsible for everything various external stimuli that come from the environment into corresponding internal stimuli is called:

19 / 100

Category: Biology

Enzymes work by lowering the ______ of the reactions they catalyse:

NUMS Mock 4
Biology
Enzymes

20 / 100

Category: Biology

Q.61 Herbivores always occupy :

21 / 100

Category: Biology

The passageways of the respiratory system have mucous secreting cells called:

NUMS Mock 3
Biology
Gaseous Exchange

22 / 100

Category: Biology

Q.19 Sm0oth endoplasmic reticulum is abundant in which types of cells?

23 / 100

Category: Biology Ch 3 Class 11

An activated enzyme consisting of polypeptide chain and a cofactor is called:

24 / 100

Category: Biology Ch 4 Class 12

During birth, central nervous system of infants can be damaged by

PMC Sample 3
Biology
Reproduction
Elimination Tool:

25 / 100

Category: Biology Ch 5 Class 11

The viruses are:

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

26 / 100

Category: Biology Ch 5 Class 12

A bean seed contains all of the following except:

NTS 2012
Biology
Growth and Development
Elimination Tool:

27 / 100

Category: Biology Ch 4 Class 11

Fibers of the extracellular matrix are attached to ______ in the plasma membrane:

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

28 / 100

Category: Biology Ch 8 Class 12

Continuous variations in a population were first observed by:

NUMS 2015
Biology
Variation and Genetics
Elimination Tool:

29 / 100

Category: Biology

Nitrogen-cycle is facilitated by ______.

NUMS Mock 3
Biology
Ecosystem

30 / 100

Category: Biology Ch 8 Class 11

Which of the following group represent pathological fungi?

31 / 100

Category: Biology Ch 7 Class 12

From each pair of centrioles ________ sets of microtubules originate

32 / 100

Category: Biology Ch 7 Class 12

Interphase is a phase of the cell cycle defined only by the absence of _______.

NTS 2019
Biology
Cell Cycle
Elimination Tool:

33 / 100

Category: Biology

While working in a laboratory, before studying a sample under the microscope, it was immersed in a dye solution to obtain ______.

NUMS Mock 1
Biology
Biology and its Major Fields of Specialization

34 / 100

Category: Biology

Which of the following is correct in humans?

NUMS Mock 1
Biology
Reproduction

35 / 100

Category: Biology Ch 2 Class 11

When the concentration of the external medium is equal to the concentration of the internal medium of a cell, the situation is called:

NUMS 2017
Biology
Biological Molecules
Elimination Tool:

36 / 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:

37 / 100

Category: Biology Ch 3 Class 12

The directional movement toward or away from the stimulus is called:

PMC 2020
Biology
Coordination and Control
Elimination Tool:

38 / 100

Category: Biology

Which of the following blood transfusions can be made safely?

NUMS Mock 2
Biology
Variation and Genetics

39 / 100

Category: Biology Ch 4 Class 12

The primary oocyte in mammals has which of the following structures around it:

NUMS 2014
Biology
Reproduction
Elimination Tool:

40 / 100

Category: Biology Ch 4 Class 11

Percentage of proteins in cell membrane is

41 / 100

Category: Biology Ch 3 Class 11

Antibodies can be digested by using which of the following types of enzymes?

PMC Sample 3
Biology
Enzymes
Elimination Tool:

42 / 100

Category: Biology Ch 2 Class 12

The movement of plants in response to touch stimulus is called:

NTS 2012
Biology
Support and Movement
Elimination Tool:

43 / 100

Category: Biology Ch 8 Class 12

An Rh negative woman is married to an Rh positive man whose father was also Rh negative. What are the chances that their child will be affected?

NTS 2016 SMBBMC
Biology
Variation and Genetics
Elimination Tool:

44 / 100

Category: Biology Ch 13 Class 12

Conversion of ammonium into nitrates is:

UHS 2018
Biology
Man and His Environment
Elimination Tool:

45 / 100

Category: Biology Ch 1 Class 12

When a frog is kept in water for some time it sheds a thin covering of skin called ____

NUMS 2014
Biology
Homeostasis
Elimination Tool:

46 / 100

Category: Biology Ch 6 Class 12

Which of the following statements correctly describes homologous chromosomes?

NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
Elimination Tool:

47 / 100

Category: Biology Ch 1 Class 12

Which of the following statement about conifers is correct?

48 / 100

Category: Biology Ch 3 Class 11

If the concentration of enzyme is kept constant and amount of substrate is increased a point is reached where increase in substrates concentration does not affect the reaction rate because of

49 / 100

Category: Biology Ch 12 Class 11

Intrinsic factor is secreted by:

NUMS 2020
Biology
Nutrition
Elimination Tool:

50 / 100

Category: Biology

Q.57 Which of the following is paired correctly?

51 / 100

Category: Biology Ch 3 Class 11

Which statement is incorrect about Lock and Key Model?

52 / 100

Category: Biology

Q.50 The cluster of pouches opened from alveolar ducts is known as

53 / 100

Category: Biology

What is the size of Parvovirus?

NUMS Mock 4
Biology
Bio-diversity | Variety of Life

54 / 100

Category: Biology Ch 10 Class 11

Of the following which one is not the characteristic of Kingdom Animalia.

55 / 100

Category: Biology

Which processes are essential in making nitrogen from dead plant material available to growing plants?

ammonification
deamination
nitrification
nitrogen fixation
NUMS Mock 2
Biology
Man and His Enviornment

56 / 100

Category: Biology Ch 10 Class 11

Of the following which one is non-cellular in most cases in animals?

57 / 100

Category: Biology Ch 9 Class 11

Bryophtes are called amphiabians of plant world because

58 / 100

Category: Biology Ch 1 Class 12

Sunken stomata are found in:

NUMS 2014
Biology
Homeostasis
Elimination Tool:

59 / 100

Category: Biology Ch 5 Class 12

The disease that arises due to increasing age is:

NTS 2018
Biology
Growth and Development
Elimination Tool:

60 / 100

Category: Biology Ch 2 Class 12

Dermal and denticle scales of fishes are called:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

61 / 100

Category: Biology Ch 9 Class 11

Sporophyte is

62 / 100

Category: Biology Ch 3 Class 12

The prolactin hormone, responsible for the activation of mammary glands to start producing milk, is a hormone of the:

NTS 2010
Biology
Coordination and Control
Elimination Tool:

63 / 100

Category: Biology

Q.36   Parkinson’s disease is caused by cell death, which produces ____________.

64 / 100

Category: Biology Ch 10 Class 12

Consider the following statements about biological communities.

I. Their members share a common gene pool

II. The community remains stable even though some physical aspect of the environment may undergo a change

III. It consists of all the populations living in a particular area.

IV. A community interacts with a non-living environment and both function together to form an ecosystem

Which two of the above statements are true?

NTS 2014
Biology
Evolution
Elimination Tool:

65 / 100

Category: Biology Ch 9 Class 12

Vaccination can be done against:

NUMS 2015
Biology
Biotechnology
Elimination Tool:

66 / 100

Category: Biology Ch 12 Class 12

Which statement about profundal zone is correct?

67 / 100

Category: Biology Ch 3 Class 11

The inhibitor which closely resembles the substrate in its molecular structure and inhibits the enzyme activity by binding to the active site of the enzyme is called:

NTS 2013
Biology
Enzymes
Elimination Tool:

68 / 100

Category: Biology Ch 12 Class 11

Translocation of organic solutes in plants takes place through:

NUMS 2020
Biology
Nutrition
Elimination Tool:

69 / 100

Category: Biology Ch 13 Class 11

Smaller the animals:

NUMS 2014
Biology
Gaseous Exchange
Elimination Tool:

70 / 100

Category: Biology Ch 12 Class 11

71 / 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:

72 / 100

Category: Biology Ch 4 Class 11

70S sized ribosomes are found in the cytoplasm of:

PMC 2020
Biology
Cell Structure and Function
Elimination Tool:

73 / 100

Category: Biology Ch 11 Class 12

Diverse and stable community at the end of succession is

74 / 100

Category: Biology Ch 14 Class 11

The massive accumulation of blood with is a tissue is called as:

NTS 2011
Biology
Transport
Elimination Tool:

75 / 100

Category: Biology Ch 7 Class 12

In gametogenesis, which resultant product is non-functional?

NTS 2019
Biology
Cell Cycle
Elimination Tool:

76 / 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:

77 / 100

Category: Biology

Q.36 The ETC in plants consists of an electron carrier called?

78 / 100

Category: Biology Ch 2 Class 11

Reactions in which simple substances are combined to form complex substances are called:

79 / 100

Category: Biology Ch 8 Class 11

The ecological role of fungi as decomposers is paralleled only by

UHS 2010
Biology
Kingdom Fungi
Elimination Tool:

80 / 100

Category: Biology Ch 10 Class 12

Choose the correct combination:

NUMS 2019 Cancelled
Biology
Evolution
Elimination Tool:

81 / 100

Category: Biology Ch 2 Class 12

Vertebrae of the neck are called:

NUMS 2020
Biology
Support and Movement
Elimination Tool:

82 / 100

Category: Biology Ch 11 Class 11

Glucose → 2 pyruvic acid + 2H2O

2ADP + 2Pi → 2 ATP

2NAD + 4H → 2NADH + 2H+

These three reactions collectively constitute ______.

NTS 2012
Biology
Bioenergetics
Elimination Tool:

83 / 100

Category: Biology Ch 1 Class 12

The place of attachment of leaf with the shoot is called:

84 / 100

Category: Biology

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

85 / 100

Category: Biology

Q.27   The stimulus for the production of more gastrin hormone from the gastric endocrine lining is:

86 / 100

Category: Biology Ch 12 Class 11

The reaction involved in chemotrophic nutrition is:

NTS 2010
Biology
Nutrition
Elimination Tool:

87 / 100

Category: Biology Ch 10 Class 11

All the animals of the grade radiata are

88 / 100

Category: Biology Ch 7 Class 11

Kingdom protista includes ______ phyla

89 / 100

Category: Biology Ch 8 Class 11

Which one of the following is different from all the rest regarding the number of cells inits body?

90 / 100

Category: Biology Ch 6 Class 12

DNA contains

91 / 100

Category: Biology Ch 9 Class 11

Why do Bryophytes and ferns both require water for fertilization?

NUMS 2015
Biology
Kingdom Plantae
Elimination Tool:

92 / 100

Category: Biology Ch 6 Class 12

The number of base pairs in a complete helical turn is/are:

NUMS 2020
Biology
Chromosomes and DNA
Elimination Tool:

93 / 100

Category: Biology Ch 5 Class 12

Plasticity of cell wall increases during

94 / 100

Category: Biology

Lecithin is formed by combining phosphatidic acid with ______:

NUMS Mock 1
Biology
Biological Molecules

95 / 100

Category: Biology

Why cannot viruses replicate on their own?

NUMS Mock 2
Biology
Variety of Life

96 / 100

Category: Biology Ch 9 Class 12

Golden rice is a promising transgenic crop. When released for cultivation, it will help in

PMC Practice 11
Biology
Biotechnology
Elimination Tool:

97 / 100

Category: Biology

The element in basic structure of proteins which differentiate them from carbohydrates is?

NUMS Mock 1
Biology
Biological Molecules

98 / 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:

99 / 100

Category: Biology

Q48 Which statement is incorrect about Lock and Key Model?

100 / 100

Category: Biology Ch 2 Class 11

Which chemical component has the greatest contribution in the total mammalian cell weight?

Your score is

The average score is 62%

0%




,

Kindly share MCQs & Explanations Here

Open chat
Salam
Can we help you?