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

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

2 / 100

Category: Biology Ch 2 Class 11

Which of the following substance is most favorable to form structural component of biological membranes?

Hydrophilic Carbohydrates

Hydrophobic fats.

Both a and b

None of these

3 / 100

Category: Biology

Which organ(s) in the male reproductive system produce gametes?

NUMS Mock 4
Biology
Reproduction

A) Vas deferens

B) Malpighian tubule system

C) Seminiferous tubules

D) Ejaculatory duct

4 / 100

Category: Biology Ch 10 Class 11

The simplest form in Kingdom Animalia belongs to:

NUMS 2018
Biology
Kingdom Animalia
Elimination Tool:

A) Eumetazoa

B) Bilateria

C) Protozoa

D) Parazoa

5 / 100

Category: Biology Ch 11 Class 11

Which of the following is a compensation point:

Leaves respire and utilize O2 and release CO2.

Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.

Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.

Rate of respiration becomes more than rate of photosynthesis.

6 / 100

Category: Biology Ch 6 Class 11

The word Archaeobacteria (a division of bacteria) derived from Greek means

True bacteria

False bacteria

Recent bacteria

Ancient bacteria

7 / 100

Category: Biology Ch 9 Class 12

Human genome is ______ times larger than any other genome sequenced so far

8 / 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

9 / 100

Category: Biology Ch 1 Class 12

Reabsorption of calcium is triggered by:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

A) Aldosterone

B) Parathormone

C) Antidiuretic

D) Vasopressin

10 / 100

Category: Biology Ch 2 Class 11

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

Proteins

Carbohydrate

Lipids

Water

11 / 100

Category: Biology

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

12 / 100

Category: Biology Ch 7 Class 11

Which of the following is the best desciption of bacteriophage?

PMC Practice 32
Biology
Kingdom Protista
Elimination Tool:

A) Fungus

B) Prokaryote

C) Living organism

D) Obligate intracellular parasite

13 / 100

Category: Biology Ch 5 Class 12

Germ cells give rise to:

NTS 2012
Biology
Growth and Development
Elimination Tool:

A) Legs

B) Head

C) Eggs and sperms

D) Hands

14 / 100

Category: Biology

Q.34 What molecule would you not expect to find in a refrovirus

A. Adenine

B. Thymine

C. Uracil

D Guanine

15 / 100

Category: Biology

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

16 / 100

Category: Biology Ch 8 Class 11

Drug obtained from fungus used for lowing blood cholesterol is

UHS 2010
Biology
Kingdom Fungi
Elimination Tool:

A) Lovastatin

B) Cyclosporin

C) Ergotin

D) Griseofulvin

17 / 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

18 / 100

Category: Biology Ch 6 Class 12

In a typical nucleotide, the nitrogenous base is attached to _______ carbon of pentose sugar.

NTS 2010
Biology
Chromosomes and DNA
Elimination Tool:

B) 5th

C) 4th

D) 3rd

E) 1st

19 / 100

Category: Biology Ch 5 Class 12

Intercalary meristems are of

Permanent nature

Temporary nature

Some are permanent some temporary

None of these

20 / 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

21 / 100

Category: Biology Ch 12 Class 12

End of earth’ is related to

Tropical rain forest

Temperate deciduous forest

Savanna

Tundra

22 / 100

Category: Biology

The end product of glycolysis in anaerobic respiration is:

NUMS Mock 4
Biology
Bioenergetics

A) Ethanol and Carbon dioxide

B) Lactate

C) Pyruvate

D) Both A and B

23 / 100

Category: Biology Ch 1 Class 12

Negative feedback mechanism is the characteristic of which class?

NUMS 2020
Biology
Homeostasis
Elimination Tool:

A) Class Fish

B) Class Amphibia

C) Class Reptilia

D) Class Mammalia

24 / 100

Category: Biology Ch 8 Class 11

An association between two organisms benefiting both is called

UHS 2010
Biology
Kingdom Fungi
Elimination Tool:

A) Commensalism

B) Parasitism

C) Predation

D) Symbiosis

25 / 100

Category: Biology

Q.27 In the process of esterification OH is derived from?

A. Ether

B. Alcohol

C. Water

D. Both A and B

26 / 100

Category: Biology

Q.51 The heavy and light chains of an antibody molecule is held together by:

A. H-bonds

B. Disulphide bridges

C. Ionic interactions

D. Hydrophobic interactions

27 / 100

Category: Biology

NAD is an example of:

NUMS Mock 1
Biology
Biological Molecules

A) Mononucleotide

B) Dinucleotide

C) Trinucleotide

D) Tetranucleotide

28 / 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

29 / 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

30 / 100

Category: Biology Ch 1 Class 12

Which of the following statement about conifers is correct?

Stored excretory products in vacuoles, at a concentration that leads to crystal formation.

ccumulate waste in leaves, which fall in autumn.

Production of black wood in the center.

Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants.

31 / 100

Category: Biology Ch 9 Class 12

Which of the following is the components / tools of recombinant DNA technology?

PMC 2020
Biology
Biotechnology
Elimination Tool:

A) Gene of interest

B) Molecular scissors

C) Molecular glue and expression system

D) All of the above

32 / 100

Category: Biology Ch 12 Class 11

The reaction involved in chemotrophic nutrition is:

NTS 2010
Biology
Nutrition
Elimination Tool:

A) 6CO2 + 12H2O + light + chlorophyll -> C6H12 + 6H2O + 6CO2

B) 2H2S + CO2 + light -> (CH2O)n + H2O + 2S

D) CH3COOH + enzyme -> CH3CHO + CO2

C) NH4 + 3O2 + light -> 2NO2 + 2H2O + 4H+ + energy

33 / 100

Category: Biology Ch 4 Class 12

Testes are structures that produce:

NTS 2015 SMBBMC
Biology
Reproduction
Elimination Tool:

A) Spores

B) Sperms

C) Seeds

D) Ova

34 / 100

Category: Biology Ch 12 Class 11

Amylase is not produced by the following type(s) of salivary gland:

NUMS 2015
Biology
Nutrition
Elimination Tool:

A) Parotid

B) Submandibular

C) Sublingual

D) None of the given options are correct

35 / 100

Category: Biology Ch 11 Class 11

Which of the following statement about the head of a chlorophyll molecule is incorrect:

It is a porphyrin ring or tetrapyrrole ring structure

It is flat, square and light absorbing

Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.

It is hydrophobic

36 / 100

Category: Biology Ch 7 Class 12

Which statement is incorrect?

In human, cell cycle is about 24 hrs

Mitosis takes 30 min

G2 5.5 hrs

Yeast cell only 90 min

37 / 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

38 / 100

Category: Biology Ch 10 Class 11

Exoskeleton of cockroach is made up of:

NUMS 2017
Biology
Kingdom Animalia
Elimination Tool:

A) Cartilage

B) Cuticle

C) Chitin

D) Amino acids

39 / 100

Category: Biology Ch 9 Class 12

This enzyme is used to cut DNA molecule in rDNA technology

PMC Sample 2
Biology
Biotechnology
Elimination Tool:

A) ligase

B) phosphatase

C) ribonuclease

D) restriction enzyme

40 / 100

Category: Biology Ch 8 Class 12

Filial is a Latin word. It means

Spring

Issue

Progeny

Descendent

41 / 100

Category: Biology Ch 3 Class 12

The nerve center for sight is located in the

NUMS 2014
Biology
Coordination and Control
Elimination Tool:

A) Thalamus

B) Myopic

C) Both a and b

D) None of these

42 / 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

43 / 100

Category: Biology Ch 12 Class 12

Evolution of vascular bundles in plants and skeleton in animals is an adaptation for

Hdrospheric ecosystem

Aquatic ecosystem

Terrestrial ecosystem

All of these

44 / 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

45 / 100

Category: Biology Ch 5 Class 12

Higher plants grow through

Growing points

Whole plant body is capable of growing

Only roots grow

None of these

46 / 100

Category: Biology Ch 11 Class 12

Study of a single population’s relationship to its environment is called

Ecology

Synecology

Autecology

Niche

47 / 100

Category: Biology Ch 9 Class 12

The enzyme which seals the foreign DNA into the vector is

Restriction endonuclease

DNA polymerase

DNA ligase

DNA mutase

48 / 100

Category: Biology

Q.23 The vectors for disease spread belong to which of the following phylum?

A. Porifera

B. Platyhelminthes

C. Annelida

D. Arthropoda

49 / 100

Category: Biology

What are the functions of the inter, motor and sensory neurons in a reflex response?

NUMS Mock 4
Biology
Coordination and Control

A) Option A

B) Option B

C) Option C

D) Option D

50 / 100

Category: Biology Ch 4 Class 11

A group of cells performing same function are known as:

NUMS 2016
Biology
Cell Structure and Function
Elimination Tool:

A) Organelles

B) Tissues

C) A system

D) Both A and B

51 / 100

Category: Biology Ch 2 Class 12

Muscle fiber has many _____ and in turns these have many ______.

NUMS 2019 Reconduct
Biology
Support and Movement
Elimination Tool:

A) Myofibrils; sarcomeres

B) Myofibrils; thin filaments

C) Myosin; thin filaments

D) Myosin; sarcomeres

52 / 100

Category: Biology Ch 2 Class 12

Bones of the skull are joined by:

NTS 2011
Biology
Support and Movement
Elimination Tool:

A) Fixed joints

B) Sliding joints

C) Pivot joints

D) Hinge joints

53 / 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

54 / 100

Category: Biology

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

NUMS Mock 2
Biology
Gaseous Exchange

A) O2

B) CO2

C) CO

D) H2

55 / 100

Category: Biology

There existed two varieties of female freshwater Mollusks in which some were streamlined and some had a high bulge. Over the generations, male freshwater Mollusks learned that high bulge favors more production of offspring. So they started preferring to mate with females having high bulge as compared to streamlined. Will this affect Hardy Weinberg Equilibrium in the population?

NUMS Mock 2
Biology
Evolution

A) No, it will not affect the Hardy Weinberg equilibrium

B) Yes, it will affect the Hardy Weinberg equilibrium

C) It will help to balance equilibrium

D) The Hardy Weinberg equilibrium doesn't apply here

56 / 100

Category: Biology Ch 6 Class 11

The cell membrane of a bacterial cell often invaginates to produce membranous structures referred to as:

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

A) Centrosomes

B) Mesosomes

C) Dictyosomes

D) Polysomes

57 / 100

Category: Biology Ch 13 Class 11

The irritant substances of smoke cause smoker’s cough which weakened and bursts:

NUMS 2019 Reconduct
Biology
Gaseous Exchange
Elimination Tool:

A) Bronchi

B) Bronchiole

C) Alveoli

D) Trachea

58 / 100

Category: Biology Ch 4 Class 12

In parthenocarpy which levels are high in ovaries

Gibberalins

Cytokinins

Auxins

All of these

59 / 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

60 / 100

Category: Biology

Q.28 The vocal cords are stretched across:

A. Larynx

B. Glottis

C. Pharynx

D. Trachea

61 / 100

Category: Biology Ch 7 Class 11

Trypanosoma is a human parasite causing

UHS 2010
Biology
Kingdom Protista
Elimination Tool:

A) African sleeping sickness

B) European sleeping sickness

C) Indonesian sleeping sickness

D) American sleeping sickness

62 / 100

Category: Biology

Q.67 What is the property of the part of a cell membrane which is in contact with external and internal environment?

A. hydrophobic

B. hydrophilic

C. neutral

D. Both A and B

63 / 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

64 / 100

Category: Biology

What is the effect of enzyme DNA ligase?

NUMS Mock 2
Biology
Chromosomes and DNA

A) DNA is broken up at specific sites

B) DNA fragments are joined together

C) DNA replication occurs

D) DNA transcription occurs

65 / 100

Category: Biology Ch 6 Class 12

Part of the amino acid sequences In normal and sickle cell hemoglobin are shown.

Normal haemoglobin

Thr – pro – glu – glu

Sickle cell haemoglobin

thr – pro – val – glu

mRNA codons for these amino acids are

Glutamine (glu) GAA GAG

Threonine (thr) ACU ACC

Proline (pro) CCU CCC

Valine (val) GUA GUG

Which transfer RNA molecule is Involved in the formation of this part of the sickle cell haemoglobin?

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

A) GUG

B) CAU

C) UGC

D) GAG

66 / 100

Category: Biology Ch 7 Class 11

Pili are mainly found on certain species of:

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

A) All bacteria

B) Gram negative bacteria

C) Both gram positive and gram negative bacteria

D) Gram positive bacteria

67 / 100

Category: Biology

The function of respiratory passage, Cilia is to keep the airways clear of:

NUMS Mock 4
Biology
Gaseous Exchange

A) Carbon dioxide

B) Oxygen

C) Dust

D) Carbon Monoxide

68 / 100

Category: Biology Ch 14 Class 11

Identify the only cells in leaf epidermis, which are NOT connected to other cells by plasmodesmata and are involved in photosynthesis.

NUMS 2019 Reconduct
Biology
Transport
Elimination Tool:

A) Epidermal cells

B) Spongy mesophyll cells

C) Guard cells

D) Palisade mesophyll cells

69 / 100

Category: Biology Ch 6 Class 12

Highly condensed portions of the chromatin are called:

NTS 2011
Biology
Chromosomes and DNA
Elimination Tool:

A) Euchromatin

B) Heterochromatin

C) Nucleosome

D) Super coils

70 / 100

Category: Biology

How many fatty acid molecules are normally present in a fat or oil molecule?

NUMS Mock 4
Biology
Biological Molecules

A) 1

B) 2

C) 3

D) 4

71 / 100

Category: Biology Ch 3 Class 11

The enzyme found in saliva responsible for the digestion of carbohydrates is:

NTS 2018
Biology
Enzymes
Elimination Tool:

A) Lysozyme

B) Amylase

C) Pepsin

D) Trypsinogen

72 / 100

Category: Biology Ch 7 Class 11

The nucleoid is found only in certain species of:

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

A) Gram positive bacteria

B) Both gram positive and gram negative bacteria

C) Gram negative bacteria

D) All bacteria

73 / 100

Category: Biology Ch 6 Class 12

Phenylketonuria is

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

A) Sex linked dominant trait

B) Sex linked recessive trait

C) Autosomal dominant trait

D) Autosomal recessive trait

74 / 100

Category: Biology Ch 7 Class 12

Synaptonemal complex helps in:

NUMS 2014
Biology
Cell Cycle
Elimination Tool:

Bac

A) Gamete formation

B) Recombination during cell division

C) Production of enzymes during cell division

D) Chromosomal movement towards pole

75 / 100

Category: Biology Ch 8 Class 12

Red green colour blindness is a sex linked recessive trait. If a colour blind man marries a woman with normal vision whose father is colourblind and they have a daughter, what is the probability that she will be colourblind?

NTS 2015 SMBBMC
Biology
Variation and Genetics
Elimination Tool:

A) 0

B) 0.25

C) 0.50

D) 0.75

76 / 100

Category: Biology

A/An ______ is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent.

NUMS Mock 4
Biology
Nutrition

A) Cellular anaerobe

B) Respiratory anaerobe

C) Obligate anaerobe

D) Facultative anaerobe

77 / 100

Category: Biology

Q.13 The frequency of allele if it is evolutionary successful is?

A. increased

B. Enzymes

C. no change

D. All of these

78 / 100

Category: Biology Ch 7 Class 12

Which of the following statements concerning nucleolus is correct?

NTS 2014
Biology
Cell Cycle
Elimination Tool:

A) It disappears at the time of cell division

B) There is only one nucleolus in every cell

C) It plays important role in the synthesis of ribonucleic acid and ribosomes in prokaryotic cells

D) It helps in destroying worn-out organelles

79 / 100

Category: Biology Ch 5 Class 12

When a fetus is in the uterus, what carries oxygen away from the placenta?

NTS 2013
Biology
Growth and Development
Elimination Tool:

A) The amniotic fluid

B) The amniotic sac

C) The lining of the uterus

D) The umbilical cord

80 / 100

Category: Biology Ch 4 Class 12

Hydra reproduces asexually by:

NUMS 2014
Biology
Reproduction
Elimination Tool:

A) Binary fission

B) Multiple fission

D) Regeneration

C) Budding

81 / 100

Category: Biology Ch 6 Class 11

Which of the following statement is incorrect regarding germ theory of diseases postulated by Robert Koch?

A specific organism can always be found in association with a given disease

The organism can be isolated and grown in pure culture in the laboratories

The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.

It is possible to recover the organism in pure culture from the experimentally infected animals.

82 / 100

Category: Biology Ch 2 Class 12

The significant flight muscle in birds is the:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

A) Pectoral

B) Tensor

C) Appendicular

D) All of these

83 / 100

Category: Biology Ch 13 Class 12

In oceans of tropical regions

Temperature of surface water is 40?C and 10?C at depth

Temp of surface water is 25?C and 5?C at depth

Surface water 50?C and depth 20?C

Surface water 10?C and depth 15?C

84 / 100

Category: Biology Ch 3 Class 11

An example of competitive inhibition of an enzyme is the inhibition of;

UHS 2019
Biology
Enzymes
Elimination Tool:

A) Succinic dehydrogenase by malonic acid

B) Cytochrome oxidase by cyanide

C) Hexokinase by glucose

D) Carbonic anhydrase by carbon dioxide

85 / 100

Category: Biology Ch 9 Class 11

Which of the following is not a parasitic fungus of plants?

NUMS 2015
Biology
Kingdom Plantae
Elimination Tool:

A) Rust

B) Mildews

C) Armillaria

D) None of the given options

86 / 100

Category: Biology

_____ are more common in human males and females.

NUMS Mock 3
Biology
Variation and Genetics

A) X-linked dominant traits

B) X-linked recessive traits

C) Y-linked dominant traits

D) Autosomal linked recessive traits

87 / 100

Category: Biology Ch 4 Class 12

Which statement is incorrect?

Climacteric is burst of respiratory activity in fruit ripening

It is associated with ethane production C

It helps in fruit set

It helps in fruit ripening

88 / 100

Category: Biology Ch 6 Class 11

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

PMC Practice 3
Biology
Kingdom Prokaryote
Elimination Tool:

A) Slime

B) Cell wall

C) Cell membrane

D) Capsule

89 / 100

Category: Biology Ch 4 Class 12

In which organism males are haploid

Aphids

Honey bee

Mosquito

Butterfly

90 / 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

91 / 100

Category: Biology Ch 6 Class 12

The Meselson and Stahl experiment confirmed that DNA replicates in _____ manner.

NUMS 2019 Reconduct
Biology
Chromosomes and DNA
Elimination Tool:

A) Conservative

B) Semi – conservative

C) Dispersive

D) New synthesis

92 / 100

Category: Biology Ch 9 Class 12

Transgenic organisms:

PMC 2020
Biology
Biotechnology
Elimination Tool:

A) Have a foreign gene inserted into them

B) Have an important role in the large scale production of medicinal products

C) Are considered beneficial to humans

D) All of the above

93 / 100

Category: Biology Ch 4 Class 11

Which of the following are related to the synthesis of excretory protein by the cell?

NUMS 2019 Cancelled
Biology
Cell Structure and Function
Elimination Tool:

A) Cell membranes

B) Rough Endoplasmic Reticulum

C) Smooth Endoplasmic Reticulum

D) Centrioles

94 / 100

Category: Biology

The gene which controls the ABO group has how many alleles in an individual?

NUMS Mock 3
Biology
Variation and Genetics

A) 1.

B) 2.

C) 3.

D) 4.

95 / 100

Category: Biology Ch 2 Class 12

Myofibrils, within the muscle fibers, contain thick and thin filaments made up of _____ and ______ respectively:

NUMS 2020
Biology
Support and Movement
Elimination Tool:

A) Myosin and Actin

B) Globulin and Albumin

C) Troponin and Tropomyosin

D) Fibrin and Fibrinogen

96 / 100

Category: Biology Ch 6 Class 11

Which of the following has a chain arrangement?

Streptobacillus

Streptococci

Staphylococci

Both A and B

97 / 100

Category: Biology Ch 10 Class 11

Pseudocoelem develops from

Blastopore

Plastoquinone

Blastocoel

Splitting of mesoderm

98 / 100

Category: Biology

Lamarck is best known for his theory of:

NUMS Mock 3
Biology
Evolution

A) Inheritance

B) Dominance

C) Inheritance of acquired characteristics

D) All of the above

99 / 100

Category: Biology

Q.20 Of the following, which one is not the characteristic of kingdom animalia:

A. All animals are ingestive heterotrophs

B. All animals are diploid

C. All animals are eukaryotes

D. All animals are developed from dissimilar haploid gametes e.g. larger sperm and small egg

100 / 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

A) 100 S

B) 90 S

C) 80 S

D) 70 S

Your score is

The average score is 61%

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