Biology Practice Test 2

Created by Ali Durrani

MDCAT Practice Tests

Biology Practice Test 2

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1 / 100

Category: Biology Ch 8 Class 11

Fungi store surplus food in the form of

UHS 2010
Biology
Kingdom Fungi
Elimination Tool:

A) Cellulose

B) Glycogen

C) Starch

D) Both B and C

2 / 100

Category: Biology

In genetics, the term locus refers to the ______ of the gene on the chromosome.

NUMS Mock 4
Biology
Chromosomes and DNA

A) Position

B) Frequency

D) Inversion

C) Copy

3 / 100

Category: Biology

Q.28 The vocal cords are stretched across:

A. Larynx

B. Glottis

C. Pharynx

D. Trachea

4 / 100

Category: Biology Ch 10 Class 12

Which of the following is not an evidence for evolution?

PMC Sample 3
Biology
Evolution
Elimination Tool:

A) Fossil record

B) Common ancestor organisms

C) Vestigial structures

D) none of these

5 / 100

Category: Biology

Q.55 The type of bronchitis that causes no permanent damage to the lungs and lasts for two weeks is known as

A. Acute bronchitis

B. Chronic bronchitis

C. Coastal bronchitis

D. Intercostal bronchitis

6 / 100

Category: Biology Ch 12 Class 11

Carbohydrates, fats & proteins are essential for:

Metabolic processes of an organism

Providing energy

Formation of sturctures

All of these

7 / 100

Category: Biology Ch 10 Class 12

Which condition can be explained by Lamarckism?

PMC Sample 1
Biology
Evolution
Elimination Tool:

A) How giraffes got their long neck

B) How humans lost their tail

C) How humans became bipedal

D) all of these

8 / 100

Category: Biology Ch 10 Class 12

A group of populations that have the potential to interbreed in nature is

Genus

Family

Species

Community

9 / 100

Category: Biology Ch 1 Class 12

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

Pith

Pit

Pulvinus

Ecdysone

10 / 100

Category: Biology Ch 4 Class 11

Suggest which among the following is not a function attributed to endoplasmic reticulum?

PMC 2020
Biology
Cell Structure and Function
Elimination Tool:

A) Detoxification of poisons and drugs

B) Digestion/egestion of foreign materials outside the cell

C) Manufacture of fat and lipid molecules

D) Biogenesis of membrane proteins

11 / 100

Category: Biology

The diagram represents two liquids, separated by a membrane through which osmosis can occur.

What movement of molecules will occur?

NUMS Mock 3
Biology
Transport

A) Molecules of dissolved substance move from left to right.

B) Molecules of dissolved substance move from right to left.

C) Overall, water molecules move from left to right.

D) Overall, water molecules move from right to left.

12 / 100

Category: Biology

Q.17 Teichoic acids are the characters of:

A. Gram Positive bacteria

B. Mycoplasma

C. Gram Negative bacteria

D. Archaeobacteria

13 / 100

Category: Biology Ch 2 Class 11

Which of the following processes is the reverse of condensation?

NTS 2016 SMBBMC
Biology
Biological Molecules
Elimination Tool:

A) Hydrolysis

B) Dehydration synthesis

C) Polymerization

D) Vapourization

14 / 100

Category: Biology

Q.60 Which of the following statements correctly describes how the host cell membrane is changed by viral replication?

A. Pores develop.

B. Glycocalyx layer is formed.

C. Membrane is resynthesized

D. Viral proteins are acquired

15 / 100

Category: Biology

Q.42 All of the following are paired facial bones except:

A. Maxilla

B. Lacrimal

C. Zygomatic

D. Mandible

16 / 100

Category: Biology Ch 10 Class 11

Which one of the following animals possesses an open circulatory system:

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

A) Amoeba

B) Earthworm

C) Grasshopper

D) Man

17 / 100

Category: Biology Ch 9 Class 12

The genetically Engineered vaccine is not available for which of the following?

PMC Practice 8
Biology
Biotechnology
Elimination Tool:

A) HAV

B) HBV

C) HCV

D) HDV

18 / 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:

B) Heterozygous tall x heterozygous tall

C) Homozygous tall x homozygous tall

D) Pure short x pure short

E) Homozygous tall x pure short

19 / 100

Category: Biology Ch 2 Class 11

Lecithin is formed by combining phosphatidic acid with ______:

NUMS 2020
Biology
Biological Molecules
Elimination Tool:

A) Serine

B) Choline

C) Inositol

D) Ethanolamine

20 / 100

Category: Biology Ch 6 Class 11

Vibrio cholera is an example of ______ type of bacteria.

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

A) Cocci

B) Bacilli

C) Spirilla

D) Commas

21 / 100

Category: Biology Ch 13 Class 11

Carbon dioxide is carried in the blood, mainly as:

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

A) Sodium bicarbonate

B) Potassium bicarbonate

C) Carbamino-haemoglobin

D) Dissolved gas in plasma

22 / 100

Category: Biology Ch 12 Class 11

Fear of getting obese is termed as:

NUMS 2019 Cancelled
Biology
Nutrition
Elimination Tool:

A) Bulimia nervosa

B) Anorexia nervosa

C) Dyspepsia

D) Obesity

23 / 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?

Rusts

Mushrooms

Molds

Yeasts

24 / 100

Category: Biology

Q.2 The set of all genes in any population is termed as?

A. population pool

B. species pool

C. gene pool

D. all of these

25 / 100

Category: Biology Ch 7 Class 12

Condensation of chromosomes reaches to the maximum during:

NUMS 2015
Biology
Cell Cycle
Elimination Tool:

A) Zygote

B) Pachytene

D) Diakinesis

C) Diplotene

26 / 100

Category: Biology Ch 2 Class 12

Dermal and denticle scales of fishes are called:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

A) Placoid scales

B) Ganoid scales

C) Ctenoid scales

D) Cycloid scales

27 / 100

Category: Biology Ch 9 Class 12

The DNA that has been altered and which now contains length of nucleotides from two different organisms is called a:

PMC 2020
Biology
Biotechnology
Elimination Tool:

A) Plasmid

B) Combined DNA

C) Vector

D) Recombinant DNA

28 / 100

Category: Biology Ch 11 Class 12

Study of relationship of organisms to their environment is

Ecology

Palaentology

Geology

None of these

29 / 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:

A) move out of the cell by simple diffusion

B) move into the cell by simple diffusion

C) move out of the cell by facilitated diffusion

D) move into the cell by facilitated diffusion

30 / 100

Category: Biology Ch 2 Class 12

Which of the following sets of bones does not included in the axial skeleton?

NUMS 2019 Cancelled
Biology
Support and Movement
Elimination Tool:

A) Cranium and facial bones

B) Sternum, ribs, vertebrae

C) Lumbar, Thoracic and pelvic bones

D) Pectoral girdles, pelvic girdle, and appendages

31 / 100

Category: Biology Ch 4 Class 12

In humans, ovaries after birth contain:

NUMS 2018
Biology
Reproduction
Elimination Tool:

A) Oogonia

B) Primary oocyte

C) Secondary oocyte

D) Ova

32 / 100

Category: Biology Ch 13 Class 12

Study of environmental relations is called:

NUMS 2018
Biology
Man and His Environment
Elimination Tool:

A) Physiology

B) Pulmonology

C) Morphology

D) Ecology

33 / 100

Category: Biology Ch 3 Class 11

Which one forms the raw material for coenzymes?

Vitamins

Carbohydrates

Proteins

Metals

34 / 100

Category: Biology Ch 6 Class 12

In DNA A.

A forms two bonds with T

G forms three bonds with C

A forms three bonds with T

Both a and b

35 / 100

Category: Biology Ch 12 Class 11

Bile is used in:

NUMS 2016
Biology
Nutrition
Elimination Tool:

A) Protein digestion

B) Starch digestion

C) Fat emulsification

D) Both A and B

36 / 100

Category: Biology Ch 2 Class 11

Haemoglobin exhibits a:

NUMS 2016
Biology
Biological Molecules
Elimination Tool:

A) Secondary structure

B) Primary structure

C) Quaternary structure

D) Tertiary structure

37 / 100

Category: Biology

Chest cavity is bounded by ribs and muscles on the sides, while the floor of chest cavity is called:

NUMS Mock 4
Biology
Gaseous Exchange

A) Pleura

B) Alveoli

C) Chest cage

D) Diaphragm

38 / 100

Category: Biology Ch 13 Class 12

In a forest, there are a lot of plants; trees, shrubs, and herbs. What will the Palm trees face if they grow in the same forest?

NTS 2019
Biology
Man and His Environment
Elimination Tool:

A) Intraspecific competition.

B) Interspecific competition

C) Environmental competition

D) All of the above

39 / 100

Category: Biology Ch 6 Class 12

Which of the following is NOT the part of RNA?

NTS 2018
Biology
Chromosomes and DNA
Elimination Tool:

A) Nitrogenous bases

B) Ribose Sugars

C) Deoxyribose Sugars

D) Phosphate groups

40 / 100

Category: Biology

How are new mitochondria formed by the pre-existing ones?

Mitosis

Fission

Conjugation

Budding

41 / 100

Category: Biology Ch 14 Class 11

Autoimmune diseases act at the principle of:

NUMS 2020
Biology
Transport
Elimination Tool:

A) Self against antigens

B) Antigen against self

C) Self against self

D) Antigen destroyed

42 / 100

Category: Biology

Q.56 Which of the following movements are possible in pivot joint?

A. Flexion and extension

B. Adduction and abduction

C. Rotation

D. Extension flexion and rotation

43 / 100

Category: Biology

Q.8 How many carbon atoms contribute to form glucopyranose?

3

5

4

6

44 / 100

Category: Biology Ch 5 Class 12

Microcephaly, the small sized skull is due to:

NUMS 2016
Biology
Growth and Development
Elimination Tool:

A) Nutritional causes

B) Skeleton causes

C) Hormonal causes

D) Genetic defects

45 / 100

Category: Biology Ch 12 Class 11

Midgut in cockroach is a short narrow tube called

Hepatic caeca

Gizzard

Stomach

Rectum

46 / 100

Category: Biology Ch 1 Class 11

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

Scientific law

Theory

Deduction

47 / 100

Category: Biology Ch 5 Class 11

Which of the following diseases is sexually transmitted?

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

A) Tuberculosis

B) AIDS

C) Dengue Fever

D) Cholera

48 / 100

Category: Biology Ch 2 Class 11

he molecule used by most of the animals for long-term energy storage is:

NUMS 2016
Biology
Biological Molecules
Elimination Tool:

A) Glycogen

B) Starch

C) Fat

D) Cholesterol

49 / 100

Category: Biology Ch 2 Class 12

Identify the bones in which the connecting joints are freely movable joints?

NTS 2015 DUHS and JSMU
Biology
Support and Movement
Elimination Tool:

A) Ankle

B) wrist

C) vertebrae

D) elbow

E) all of the above

50 / 100

Category: Biology Ch 1 Class 12

Sunken stomata are found in:

NUMS 2014
Biology
Homeostasis
Elimination Tool:

A) Mesophytes

B) Xerophytes

C) Halophytes

D) Hydrophytes

51 / 100

Category: Biology

Tails can be regenerated in:

NUMS Mock 3
Biology
Growth and Development

A) The larvae of amphibians

B) Lizards

C) Both lizards and the larvae of amphibians

D) None of the given options

52 / 100

Category: Biology Ch 11 Class 11

C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:

Photosynthesis

Aerobic respiration

Anaerobic respiration

Respiration

53 / 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:

A) It is a retrovirus

B) It is surrounded by an envelope

C) It does not cause AIDS

D) It causes deficiency of the human immune system

54 / 100

Category: Biology Ch 7 Class 11

Which of the following statement about Kingdom Protista is incorrect?

Their members have characteristics which separate them from other kingdoms

They only include unicellular aquatic eukaryotic organisms.

They do not develop from Blastula or embryo.

They contain ancestors for fungi plants & animals

55 / 100

Category: Biology Ch 6 Class 12

A fern has _____ pairs of chromosomes.

NTS 2012
Biology
Chromosomes and DNA
Elimination Tool:

A) 23

B) 40

C) 500

D) 13

56 / 100

Category: Biology

Q.6 The uterus of the female reproductive system opens into the?

A. placenta

B. birth canal

C. cervix

D. all of these

57 / 100

Category: Biology Ch 8 Class 11

Oyster mushroom is an example of predator fungi which attack on

Pin warms

Tape worms

Round worms

Platehelminthes

58 / 100

Category: Biology Ch 3 Class 11

Which of the following factors affect enzyme activity?

NTS 2011
Biology
Enzymes
Elimination Tool:

A) Temperature

B) pH

C) Concentration of substrate

D) Radiation

E) All of these

59 / 100

Category: Biology Ch 9 Class 11

Below the point at which the cotyledons are attached, the embryo axis is called _______.

NTS 2016 SMBBMC
Biology
Kingdom Plantae
Elimination Tool:

A) Radicle

B) Epicotyl

C) Hypocotyl

D) Coleoptile

60 / 100

Category: Biology Ch 8 Class 12

In which of the following cases, genotypic and phenotypic ratio will remain same in F2 generation

Law of independent assortment

Law of Segregation

Test cross

Incomplete dominance.

61 / 100

Category: Biology Ch 3 Class 12

Normal action potential of a neuronal cell is :

plus 50 mv

plus 60 mv

plus 70 mv

plus 80 mv

62 / 100

Category: Biology Ch 7 Class 12

Microtubules are composed of

Action protein

Actin and myosin proteins

Sphingomyelin and tubulin

Tubulin protein and traces of RNA

63 / 100

Category: Biology Ch 2 Class 11

Ribose sugar that is the main part of RNA is a type of _____ sugar.

NUMS 2019 Reconduct
Biology
Biological Molecules
Elimination Tool:

A) Triose

B) Tetrose

C) Pentose

D) Hexose

64 / 100

Category: Biology Ch 8 Class 11

Which of the following group represent pathological fungi?

Mushrooms morels and truffles

Rusts smuts and molds

Penicillium

All of these

65 / 100

Category: Biology Ch 2 Class 12

Type of sclerenchyma cells found in seed coats are:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

A) Fibers

B) Tracheids

C) Sclereids

D) Vessels

66 / 100

Category: Biology

Q31 What happens during muscle contraction to the length of each myosin and actin filament?

A. A band becomes short

B. I band elongates

C. There is no change in sarcomere

D. Z- lines get closer

67 / 100

Category: Biology Ch 4 Class 12

What is the commercial method of producing millions of seedlings in limited time?

NUMS 2016
Biology
Reproduction
Elimination Tool:

A) Parthenogenesis

B) Parthenocarpy

C) Cutting

D) Grafting

68 / 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:

A) Phospholipids

B) Carbohydrates

C) Glycolipids

D) Proteins

69 / 100

Category: Biology Ch 2 Class 11

Carbon atom is

Monovalent

Divalent

Trivalent

70 / 100

Category: Biology Ch 9 Class 12

The genetically engineered vaccine is available for which of the following hepatitis virus?

PMC Practice 5
Biology
Biotechnology
Elimination Tool:

A) HBV

B) HAV

C) HCV

D) Options A and B are correct

71 / 100

Category: Biology Ch 10 Class 12

Genetic equilibrium is a:

NTS 2019
Biology
Evolution
Elimination Tool:

A) Change of allele and gene frequency in a population

B) Stability of allele and gene quantity in a population

C) Change of allele and gene number in a population

D) Stability of allele and gene frequency in a population

72 / 100

Category: Biology Ch 2 Class 12

Hinge joint occurs in:

NTS 2015 SMBBMC
Biology
Support and Movement
Elimination Tool:

A) Elbow

B) Skull

C) Ankle

D) Backbone

73 / 100

Category: Biology

Q.13 Cellulose is the major component of?

A. Primary wall

B. Secondary wall

C. Middle lamella

D. All of these

74 / 100

Category: Biology

The Porifera are pore – bearing animals, commonly called:

NUMS Mock 3
Biology
Kingdom Animalia

A) Corals

B) Sponges

C) Hydras

D) Anemones

75 / 100

Category: Biology Ch 7 Class 12

The phase of mitosis in which sister chromatids move towards opposite poles:

UHS 2019
Biology
Cell Cycle
Elimination Tool:

A) Anaphase

B) Metaphase

C) Prophase

D) Telophase

76 / 100

Category: Biology Ch 5 Class 11

Diseases in living organisms which are caused by parasites are called:

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

A) Disinfestations

B) Antisepsis

C) Infections

D) Infestations

77 / 100

Category: Biology Ch 13 Class 12

Tides are caused by

Gravitational pull of sun

Movements of large animals in water

Uneven water body floor

High winds

78 / 100

Category: Biology

The system responsible for fighting the pathogens is:

NUMS Mock 4
Biology
Transport

A) Muscular System

B) Endocrine System

C) Nervous System

D) Immune System

79 / 100

Category: Biology Ch 13 Class 11

Pharynx leads air into _____ through glottis.

NTS 2012
Biology
Gaseous Exchange
Elimination Tool:

A) Trachea

B) Bronchus

C) Alveoli

E) Larynx

80 / 100

Category: Biology Ch 10 Class 12

At what point are two populations descending from the same ancestral stock considered separate species?

NTS 2014
Biology
Evolution
Elimination Tool:

A) When they can no longer produce viable, fertile offspring

B) When they look significantly different from each other

C) When they can interbreed successfully and produce offspring

D) When their habitats are separated by a significantly large distance so that they cannot meet

81 / 100

Category: Biology Ch 2 Class 11

Ptyalin can convert starch into:

NUMS 2015
Biology
Biological Molecules
Elimination Tool:

A) Monosaccharide form

B) Oligosaccharide form

C) Polysaccharide form

D) All given options

82 / 100

Category: Biology Ch 2 Class 12

The muscles attached to the bones are:

NTS 2010
Biology
Support and Movement
Elimination Tool:

A) Voluntary and smooth

B) Involuntary and smooth

D) Involuntary and striated

C) Voluntary and striated

83 / 100

Category: Biology Ch 9 Class 12

Which one of the following options is NOT an example of genetic engineering?

NTS 2019
Biology
Biotechnology
Elimination Tool:

A) Insulin-producing bacteria

B) Oil eating bacteria

C) Photosynthetic bacteria

D) Metal extracting bacteria

84 / 100

Category: Biology Ch 3 Class 11

Inactive enzyme precursors such as pepsinogen for pepsin are called as:

PMC Practice 1
Biology
Enzymes
Elimination Tool:

A) Holoenzymes

B) Actinases

C) Zymogens

D) Mucopolysaccharides

85 / 100

Category: Biology

Q.51 Which of the following is the respiratory surface in human beings?

A. Lungs

B. Alveoli

C. Windpipe

D. alveolar duct

86 / 100

Category: Biology Ch 3 Class 11

Which of the following statements is incorrect?

PMC Sample 1
Biology
Enzymes
Elimination Tool:

A) The competitive inhibitor affects the rate of breakdown of the enzyme-substrate complex.

B) The presence of the competitive inhibitor decreases the Km of the enzyme for the substrate.

C) A competitive inhibitor reacts reversibly with the enzyme to form an enzyme-inhibitor complex.

D) In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme.

87 / 100

Category: Biology

Q.11 In cocci, three plane division result in formation of sarcine which is a

A. Cuba of 8 cocci

B. Square of 4 cocci

C. Irregular structure

D. Triangular 6 cocci

88 / 100

Category: Biology Ch 9 Class 11

Plants of this group are called ferns:

NUMS 2017
Biology
Kingdom Plantae
Elimination Tool:

A) Filicinae

B) Angiospermae

C) Gymnospermae

D) All of them

89 / 100

Category: Biology Ch 6 Class 12

Within the chromosomes, each chromatid contains ______ DNA molecule:

NUMS 2020
Biology
Chromosomes and DNA
Elimination Tool:

A) One

B) Two

C) Three

D) Half

90 / 100

Category: Biology Ch 4 Class 12

Which one of the following represents the changes that occur in the ovary and the uterus approximately every 28 days involving ovulation with the breakdown and loss of the lining of the uterus?

PMC 2020
Biology
Reproduction
Elimination Tool:

A) Ovulation

B) Menstrual cycle

C) Uterine cycle

D) Embryo formation

91 / 100

Category: Biology Ch 7 Class 12

DNA is synthesized and chromosome number is doubled in

G1 phase

S phase

G2 phase

G0 phase

92 / 100

Category: Biology Ch 7 Class 11

_______ infection is caused by a viroid:

NUMS 2020
Biology
Kingdom Protista
Elimination Tool:

A) Hepatitis A

B) Hepatitis D

D) Mysterious brain infection

C) Mad Cow disease

93 / 100

Category: Biology Ch 5 Class 12

Tails can be regenerated in:

NUMS 2015
Biology
Growth and Development
Elimination Tool:

A) The larvae of amphibians

B) Lizards

C) Both lizards and the larvae of amphibians

D) None of the given options

94 / 100

Category: Biology

In chemiosmosis, the proton (H+) moves from _______.

NUMS Mock 4
Biology
Bioenergetics

A) Stroma to Lumen

B) Cytoplasm to Stroma

C) Lumen to Stroma

D) Stroma to cytoplasm

95 / 100

Category: Biology Ch 4 Class 11

In a typical compound microscope the resolution is 2 μm. Which is about _____ that of naked eye.

NUMS 2019 Reconduct
Biology
Cell Structure and Function
Elimination Tool:

A) 100 x

B) 300 x

C) 400 x

D) 500 x

96 / 100

Category: Biology

Q.63 Ozone depletion is commonly caused by:

A. CFC’s

B. Industrial smoke

C. Nitrogen gases

D. Green house gases

97 / 100

Category: Biology Ch 3 Class 11

In which of the following location enzymes controlling cellular respiration are present?

Nucleus

Chlorophast

Milochondria

Ribosome

98 / 100

Category: Biology Ch 12 Class 12

One of the most important cause of desertification is

Floods

Wind blowing

Raining

Deforestation

99 / 100

Category: Biology Ch 5 Class 12

Apical meristems are located at

Tips of leaves

Tips of flowers

Tips of roots and stems

Tips of roots only

100 / 100

Category: Biology

Q.68 A person was married to his cousin and both are heterozygous for sickle cell anemia. Among their four kids, what will be proportion of affected homozygotes?

A. 50%

B. 25%

C. 75%

D. 100%

Your score is

The average score is 57%

0%

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