Biology Practice Test 4

Biology Practice Test 4 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 human anatomy, physiology, microbiology, and ecology, helping students improve accuracy and retention.

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Biology Practice Test 4

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1 / 100

Category: Biology Ch 8 Class 11

Tetracycline and penicillins are:

NUMS 2018
Biology
Kingdom Fungi
Elimination Tool:

A) Disinfectants

B) Antibiotics

C) Antiseptics

D) Antigens

2 / 100

Category: Biology Ch 10 Class 11

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

All animals are ingestive heterotrophs

All animals are eukaryotes

All animals develop from the dissimilar gametes i.e. large sperm and small egg.

It is largest kingdom

3 / 100

Category: Biology

Q.25 Which of the following is an example of a marine annelid?

A. Neries

B. Stylaria

C. Earthworm

D. Leech

4 / 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

5 / 100

Category: Biology Ch 12 Class 11

Parasites capable of living independently of its host at times is called as _______ parasite.

Obligate

Strict

Facultative

Endoparasite

6 / 100

Category: Biology

As an essential element in living organisms, _______ ion is playing an important role in insulin secretion, the release of neurotransmitters, muscle contraction, and heartbeat regulation.

NUMS Mock 2
Biology
Coordination and Control

A) Sodium

B) Potassium

C) Calcium

D) Chloride

7 / 100

Category: Biology Ch 2 Class 11

Proteoglycan in cartilages (which consists of polysaccharides) are also attached to:

NUMS 2014
Biology
Biological Molecules
Elimination Tool:

A) Chondroitin

B) Ossein

C) Casein

D) Cartilagin

8 / 100

Category: Biology Ch 6 Class 11

Germ theory was presented by:

NUMS 2016
Biology
Kingdom Prokaryote
Elimination Tool:

A) Robert Koch

B) Antonie van Leeuwenhoek

C) Robert Hooke

D) Robert Brown

9 / 100

Category: Biology

Q.2 Competitive inhibition can be overcome by using

A. Low concentration of substrate

B. High concentration of inhibitor

C. Moderate concentration of inhibitor

D. High concentration of substrate

10 / 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:

A) Denaturation

B) Saturation

C) Composition

D) Inhibition

11 / 100

Category: Biology Ch 6 Class 11

A group of 8 cocci is called

Diplococci

Octococci

Tetrad

Sarcina

12 / 100

Category: Biology Ch 14 Class 11

T-Lymphocytes are matured in thymus glands and they are produced in:

NUMS 2016
Biology
Transport
Elimination Tool:

A) Thymus glands

B) Bone marrow

D) Heart

C) Pancreas

13 / 100

Category: Biology

_______ is involved in lipid synthesis/metabolism.

NUMS Mock 4
Biology
Cell Structure and Function

A) Smooth endoplasmic reticulum

B) Rough endoplasmic reticulum

C) Mitochondria

D) Vacuoles

14 / 100

Category: Biology

Q.35 Enzymes for light-dependent reactions of photosynthesis would most likely be associated with:

A. Outer membrane of the chloroplast

B. Inner membrane of the chloroplast

C. Stroma of the chloroplast

D. Thylakoid membranes of the chloroplast

15 / 100

Category: Biology Ch 10 Class 11

Flame cells are commonly found in:

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

A) Platyhelminthes

B) Annelida

C) Coelenterate

D) All of above

16 / 100

Category: Biology Ch 8 Class 12

Which of the following condition is hybrid A. TT B. Tt C. tt D. All of these

All of these

17 / 100

Category: Biology Ch 1 Class 11

A large regional community primarily determined by climate is called :

Population

Community

Biome

Habitat

18 / 100

Category: Biology

Q.55 Immunogen is a foreign substance and stimulates the formation of:

A. Antitoxins

B. Antiserum

C. Antibodies

D. Lymph

19 / 100

Category: Biology Ch 6 Class 12

Which of the following can be blocked, if one wants to stop translation of mRNA?

NUMS 2019 Reconduct
Biology
Chromosomes and DNA
Elimination Tool:

A) RNA polymerase

B) Helicase

C) Elongation factor

D) Primase

20 / 100

Category: Biology

Q.41 The stretch reflex is also known as:

A. Stretch reflex

B. Spinal reflex

C. Golgi tendon reflex

D. Myotatic reflex

21 / 100

Category: Biology Ch 8 Class 11

Ecological role of fungi as decomposers is only paralleled by

Blue green algae

Cyanobacteria

Bacteria

Virus

22 / 100

Category: Biology

Q.47 Which of the following are believed to have common origin with annelids?

A. Nematodes

B. Arthropods

C. Molluses

D. None of these

23 / 100

Category: Biology Ch 5 Class 11

A combination of alpha interferon and ribavirin is used for the treatment of hepatitis:

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

A) B

B) A

C) D

D) C

24 / 100

Category: Biology Ch 11 Class 12

Plants growing in xeric conditions are called

Spherophytes

Mesophytes

Xerophytes

Teridophytes

25 / 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:

A) 25%

B) 50%

C) 75%

D) 100%

26 / 100

Category: Biology Ch 7 Class 11

Based on molecular data euglenoids are thought to be closely related to

Dinoflagellates

Zooflagellates

Protozoans

Algae

27 / 100

Category: Biology Ch 2 Class 12

Pectoral fins are enlarged in:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

A) Whales

B) Sharks

C) Skates

D) Plaice

28 / 100

Category: Biology Ch 9 Class 12

The cells are held together by a Ca-pectate layer are called as:

NUMS 2016
Biology
Biotechnology
Elimination Tool:

A) Primary cell wall

B) Secondary cell wall

C) Middle lamella

D) Tertiary cell wall

29 / 100

Category: Biology Ch 2 Class 12

Pseudopodia are:

NTS 2016 DUHS & JSMU
Biology
Support and Movement
Elimination Tool:

A) False feet developed in some unicellular organisms

B) Small hairlike structures present on the unicellular organisms

C) Long, like structures coming out of the mouth

D) Suckers which are attached to the walls of intestines

30 / 100

Category: Biology Ch 1 Class 12

Urine leaves the kidney through a duct called:

NUMS 2020
Biology
Homeostasis
Elimination Tool:

A) Urethra

B) Pelvis

C) Ureter

D) Nephron

31 / 100

Category: Biology Ch 7 Class 12

Which is a feature of malignant tumor?

Localized

Little deleterious effect

Few mitosis

Metastasize

32 / 100

Category: Biology Ch 6 Class 11

Which of the following types of bacterial reproduction is most similar to mitosis?

PMC Practice 2
Biology
Kingdom Prokaryote
Elimination Tool:

A) Transduction

B) Transfonnation

C) Binary fission

D) Conjugation

33 / 100

Category: Biology Ch 6 Class 11

Spirochaete bacterium Treponema Pallidum causes ______.

NTS 2016 SMBBMC
Biology
Kingdom Prokaryote
Elimination Tool:

A) Gonorrhea

B) Syphilis

C) Genital herpes

D) AIDS

34 / 100

Category: Biology Ch 14 Class 11

How many ml of blood is pumped by each contraction of the heart?

NUMS 2016
Biology
Transport
Elimination Tool:

A) 80 ml

B) 90 ml

C) 70 ml

D) 60 ml

35 / 100

Category: Biology

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

A. Maxilla

B. Lacrimal

C. Zygomatic

D. Mandible

36 / 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

37 / 100

Category: Biology Ch 13 Class 11

Hemoglobin can absorb maximum oxygen at sea level, which is _____ ml/100 ml of blood.

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

A) 15

B) 19

C) 19.6

D) 20

38 / 100

Category: Biology Ch 14 Class 11

In the human body, blood circulating from the gut to the heart passes through the:

NTS 2013
Biology
Transport
Elimination Tool:

A) aorta

B) kidneys

D) lungs

C) llver

39 / 100

Category: Biology Ch 6 Class 11

In which phase of bacterial growth, does divison at an exponential rate occur?

NUMS 2020
Biology
Kingdom Prokaryote
Elimination Tool:

A) Lag phase

B) Log phase

C) Stationary phase

D) Decline phase

40 / 100

Category: Biology Ch 2 Class 11

Steroids consist of _____ 6 membered carbon rings and one 5 membered carbon ring.

NTS 2012
Biology
Biological Molecules
Elimination Tool:

A) Four

B) Three

C) Two

D) Five

41 / 100

Category: Biology Ch 1 Class 12

The excretion of hypertonic urine in humans is associated best with the:

PMC 2020
Biology
Homeostasis
Elimination Tool:

A) Glomerular capsule

B) Proximal convoluted tubule

C) Loop of Henle

D) Distal convoluted tubule

42 / 100

Category: Biology Ch 10 Class 11

Of the following which one is not included in Proterostomes?

Arthropods

Hemichordates

Annelids

Molluses

43 / 100

Category: Biology Ch 4 Class 12

Colour of corpus luteum is:

NUMS 2018
Biology
Reproduction
Elimination Tool:

A) Red

B) Yellow

C) Grey

D) Black

44 / 100

Category: Biology Ch 14 Class 11

Semilunar valves are not present:

NUMS 2015
Biology
Transport
Elimination Tool:

A) At the base of the pulmonary trunk

B) At the base of the aorta

D) In the coronary arteries

C) In veins

45 / 100

Category: Biology Ch 12 Class 11

A hormone called _______ controls the secretion of gastric juice.

NUMS 2018
Biology
Nutrition
Elimination Tool:

A) Gastrin

B) Secretin

C) Thyroxine

D) Iodothyronine

46 / 100

Category: Biology

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

NUMS Mock 4
Chemistry
Hydrocarbons

A) CH4

B) C2H2

C) C2H4

D) All of the above

47 / 100

Category: Biology Ch 4 Class 12

Viviparous animals are those in which

. Internal fertilization with external development in eggs

Internal fertilization with internal development inside female body

Internal fertilization and internal development followed by hatching of egg

External fertilization with external development

48 / 100

Category: Biology

Q.21 The spent energy in the form pf ADP is regeneratèd by mitochondria into which of the following forni?

A. AMP

B.ATP

C.ADP

D.All of these

49 / 100

Category: Biology Ch 5 Class 12

The individual with harelip shows which of the following conditions?

NUMS 2014
Biology
Growth and Development
Elimination Tool:

A) Hard palate

B) Polydactyl

D) Microcephale

C) Cleft Palate

50 / 100

Category: Biology Ch 5 Class 12

Growth of multicellular plants occur in

Two phases

Three phases

Five phase

Four phases

51 / 100

Category: Biology Ch 4 Class 11

Which among the following sentence is not correct about the organelles?

NUMS 2019 Reconduct
Biology
Cell Structure and Function
Elimination Tool:

A) They are found in all Eukaryotic cells.

B) They are only found in multicellular organisms.

C) They coordinate to produce the cell.

D) They are small sized and mostly internal.

52 / 100

Category: Biology Ch 13 Class 11

Booklungs serve the function of respiration in:

NTS 2014
Biology
Gaseous Exchange
Elimination Tool:

A) Scorpion

B) Earthworm

C) Frog

D) Cockroaches

53 / 100

Category: Biology Ch 1 Class 12

Humans maintain their body temperature within a narrow limit due to their _____ characteristics.

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

A) Ectothermic

B) Endothermic

C) Heterothermic

D) Hypothermic

54 / 100

Category: Biology

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

NUMS Mock 3
Biology
Coordination and Control

A) I, III, II, and IV

B) I, IV, II and III

C) IV, I, III and II

D) IV, III, I and II

55 / 100

Category: Biology Ch 11 Class 11

3-Phosphoglycerate in the presence of ATP and reduced NADP (from the light-dependent stage) is reduced to:

NUMS 2020
Biology
Bioenergetics
Elimination Tool:

A) Ribulose bisphosphate

B) 6 carbon compound

C) 5 carbon compound

D) 3 carbon compound

56 / 100

Category: Biology Ch 4 Class 11

Lysosomes function in:

NTS 2011
Biology
Cell Structure and Function
Elimination Tool:

A) Protein synthesis

B) Processing

C) Intracellular digestion

D) Lipid synthesis

57 / 100

Category: Biology Ch 8 Class 11

Which of the following endoparasites of humans does show viviparity?

NTS 2018
Biology
Kingdom Fungi
Elimination Tool:

A) Trichinella spiralis

B) Ascaris lumbricoides

C) Ancylostoma duodenale

D) Enterobius vermicularis

58 / 100

Category: Biology Ch 9 Class 12

Commonly used restriction enzyme is

pSC 101

pBR 322

EcoRI

All of these

59 / 100

Category: Biology Ch 3 Class 11

Cyanide for enzymes act as:

NUMS 2018
Biology
Enzymes
Elimination Tool:

A) Substrate

C) Cofactor

B) Prosthetic group

D) Inhibitor

60 / 100

Category: Biology

Q.14 A man is suffering from fever. What will be the effect on his enzyme activity of the body?

A. Slightly decreased

B. Enzyme inactivation

C. Enzyme denaturation

D. No effect on enzyme activity

61 / 100

Category: Biology Ch 12 Class 11

Undigested food in cockroach is stored in:

NUMS 2015
Biology
Nutrition
Elimination Tool:

A) Crop

B) Rectum

C) Gizzard

D) Crop & Rectum

62 / 100

Category: Biology Ch 9 Class 12

The deficiency of which of the following cause severe combined immunodeficiency

PMC Sample 3
Biology
Biotechnology
Elimination Tool:

A) hypoxanthine-guanine transferase

B) xanthine oxidase

C) PRPP synthatase

D) adeninosine deaminase

63 / 100

Category: Biology Ch 13 Class 12

Which of the following statements is true about Savannah?

NTS 2015 DUHS and JSMU
Biology
Man and His Environment
Elimination Tool:

A) Dry season is very long and the temperature ranges more than 18 C throughout the year

B) Its plants do not shed off their leaves

C) The subsoil is permanently frozen

D) Rainfall is up to 200 cm per year

64 / 100

Category: Biology Ch 2 Class 11

All of the following structures are proteinous in nature except:

NUMS 2014
Biology
Biological Molecules
Elimination Tool:

A) Hooves

B) Haemoglobin

C) Enzymes

D) Steroids

65 / 100

Category: Biology Ch 9 Class 11

Which of the following statement about alternation of generation in bryophytes is incorrect?

It involves alternation of morphologically different generations

Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition.

Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization

pore formation occurs through meiosis

66 / 100

Category: Biology

Q.61 These are properties of lipids_________________

A. Insoluble in water and soluble in fat solvent.

B. High energy content

C. Structural component of cell membrane

D. All of these

67 / 100

Category: Biology

Q.24 When was the bacteriopbage phenomena rediscovered by D’Herelle?

A. 1918

B. 1917

C. 1920

D. 1990

68 / 100

Category: Biology Ch 4 Class 12

Which characteristic is not of identical twins

. Produced by separation of two blastomeres

Have different genetic makeup

Produced asexually

Produced when embryo is at two cell stage

69 / 100

Category: Biology Ch 13 Class 12

Which of the following is not correct for food web?

NUMS 2019 Cancelled
Biology
Man and His Environment
Elimination Tool:

A) Start with primary consumers

B) Formed from food chain

C) Stable than food chain

D) Complex with food chain

70 / 100

Category: Biology Ch 11 Class 11

The light dependent reaction of photosynthesis occurs in:

NTS 2011
Biology
Bioenergetics
Elimination Tool:

A) Stroma of chloroplast

B) Guard cells of stomata

C) Thylakoid membrane of chloroplast

D) Cytoplasm of leaf cell

71 / 100

Category: Biology Ch 6 Class 11

Tuberculosis is caused by?

NTS 2015 SMBBMC
Biology
Kingdom Prokaryote
Elimination Tool:

A) Bacterium

B) Allergy

C) Nicotine

D) Virus

72 / 100

Category: Biology Ch 11 Class 11

1 NADH in respiratory chain produces:

NUMS 2015
Biology
Bioenergetics
Elimination Tool:

A) 1 ATP

B) 2 ATP

C) 3 ATP

D) 4 ATP

73 / 100

Category: Biology Ch 6 Class 11

If lipopolysaccharides did not appear in the wall of bacteria on staining then it will be known as ________.

UHS 2018
Biology
Kingdom Prokaryote
Elimination Tool:

A) Gram negative

B) Gram positive

C) Capsule

D) Both Gram positive & negative

74 / 100

Category: Biology

What do we call the cell surface membrane of a muscle fibre?

NUMS Mock 3
Biology
Support and Movement

A) Sarcolemma

B) Plasma membrane

C) Sarcoplasm

D) Myofibrils

75 / 100

Category: Biology Ch 4 Class 12

A pollen tube serves to:

NTS 2015 SMBBMC
Biology
Reproduction
Elimination Tool:

A) Produce sperms

B) Store food for the developing embryo

C) Transfer sperms from the stigma to the ovary

D) Produce female gametophytes

76 / 100

Category: Biology Ch 11 Class 11

Aerobic respiration results in how much ATP?

NUMS 2016
Biology
Bioenergetics
Elimination Tool:

A) 2

B) 36

C) 18

D) 32

77 / 100

Category: Biology Ch 5 Class 12

Cytoplasmic localization is a consequence of:

NTS 2011
Biology
Growth and Development
Elimination Tool:

A) Fertilization

B) Cleavage

C) Morula

D) Blastula

78 / 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:

A) Cuboidal epithelium

B) Squamous epithelium

C) Columnar epithelium

D) Ciliated epithelium

79 / 100

Category: Biology Ch 4 Class 11

Cellulose is the major component of

Primary wall

Secondary wall

Middle lamella

all of the above

80 / 100

Category: Biology Ch 13 Class 11

The most important cause of many of the respiratory disorders is:

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

A) Bacterial infection

B) Pollution

C) Smoking

D) Drinking

81 / 100

Category: Biology

Q.17 Final acceptor of electrons in respiratory chain is?

A. NADH

B. Cytochrome a3

C. Water

D. Oxygen

82 / 100

Category: Biology Ch 3 Class 12

Type of neurons found exclusively in CNS are:

Sensory neurons

Motor neurons

Associative neurons

None of these

83 / 100

Category: Biology Ch 14 Class 11

All of the following protect the body against the entrance of germs except:

NTS 2017
Biology
Transport
Elimination Tool:

A) Tears

B) Mucous membranes

C) Ciliated cells

E) Red blood cells,

84 / 100

Category: Biology Ch 9 Class 12

During gel electrophoresis, the gel used is:

NUMS 2020
Biology
Biotechnology
Elimination Tool:

A) Agar gel

B) Agarose gel

C) Dextran

D) Toluene gel

85 / 100

Category: Biology Ch 4 Class 11

The first layer of cell wall which is formed is:

Primary wall

Secondary wall

Middle lamella

All of these

86 / 100

Category: Biology Ch 8 Class 11

The stored food in fungi is usually lipid droplets of:

NUMS 2017
Biology
Kingdom Fungi
Elimination Tool:

A) Glucose

B) Glycogen

C) Starch

D) Protein

87 / 100

Category: Biology Ch 6 Class 11

Which of the following bacteria are without a cell wall?

NUMS 2016
Biology
Kingdom Prokaryote
Elimination Tool:

A) Mycoplasma

B) Gram positive bacteria

C) Gram negative bacteria

D) Archaeo bacteria

88 / 100

Category: Biology Ch 2 Class 12

Growth movement caused in response to gravitational stimulus is called:

NTS 2011
Biology
Support and Movement
Elimination Tool:

A) Nutation

B) Geotropism

C) Nastic movement

D) Tropic movement

89 / 100

Category: Biology

Photosystems are located in _

A. Stroma

B. Chloroplast envelope

C. Thylakoid membranes

D. The intergrana

90 / 100

Category: Biology Ch 1 Class 12

Ureter open into the urinary bladder through:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

A) Pelvis

C) Ureteral orifices

B) Hilus

D) Urethral orifices

91 / 100

Category: Biology Ch 1 Class 12

Which of the following marine fishes are considered direct descendents of fresh water ancestors?

Hagfish

Jelly Fish

Star Fish

Bony fishes

92 / 100

Category: Biology Ch 13 Class 11

The blood enters the _____ side of heart

Posterior

Lateral

All possibl

93 / 100

Category: Biology Ch 12 Class 12

Ecosystem of Shogran is

Coniferous alpine

Boreal

temperate deciduous

Grassland

94 / 100

Category: Biology Ch 4 Class 12

Which of these cycles operate in human females?

PMC Sample 2
Biology
Reproduction
Elimination Tool:

A) Oestrous cycle

B) Menstrual cycle

C) Both Options A and B are correct

D) None of these options is correct

95 / 100

Category: Biology Ch 5 Class 11

Other name for Kingdom monera is:

Protoctista

Prokaryotae

Archae

None of these

96 / 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

97 / 100

Category: Biology Ch 2 Class 11

Which of the statement is not true for compounds like glycoprotein and glycolipids?

They are conjugated molecules of carbohydrates

Both have role in the extra cellular matrix of animals and bacterial cell wall

They are components of biological membranes.

Both are produced and secreted by endoplasmic reticulum

98 / 100

Category: Biology Ch 12 Class 11

_____ is activated to ______ by enterokinase / enteropeptidase enzyme secreted the lining of duodenum:

NUMS 2019 Cancelled
Biology
Nutrition
Elimination Tool:

A) Pepsinogen, pepsin

B) Trypsinogen, trypsin

C) Pepsinogen, trypsin

D) Chymotrypsinogen, chymotrypsin

99 / 100

Category: Biology Ch 12 Class 11

Which enzyme present in the stomach curdles the milk?

NUMS 2016
Biology
Nutrition
Elimination Tool:

A) Rennin

B) Trypsin

C) Pepsin

D) Lipase

100 / 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

Your score is

The average score is 61%

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