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

Eukaryotic, multicellular, and consumers belong to ______ kingdom.

NUMS Mock 3
Biology
Bio-diversity | Variety of Life

A) Monera

B) Protista

C) Fungi

D) Animalia

2 / 100

Category: Biology Ch 3 Class 11

Optimum temperature for enzymes of human body is:

NUMS 2018
Biology
Enzymes
Elimination Tool:

A) 90 F

B) 95 F

C) 98 F

D) 100 F

3 / 100

Category: Biology Ch 9 Class 12

Cystic fibrosis patients lack a gene that codes for a transmembrane carrier of:

NTS 2017
Biology
Biotechnology
Elimination Tool:

A) Na+ ions

B) K+ ions

C) CI- ions

D) Ca2+ ions

4 / 100

Category: Biology

Pathway of energy used by muscles converted from food is:

NUMS Mock 3
Biology
Bioenergetics
Support and Movement

A) Food-ATP-creatine phosphate- protein

B) Food-glycogen- ATP-creatine phosphate

C) Food-glycogen-creatine phosphate- ATP

D) Food-protein-creatine phosphate- ATP

5 / 100

Category: Biology Ch 6 Class 12

DNA has a helical shape with the diameter of

3 nm

4 nm

2 nm

5 nm

6 / 100

Category: Biology

Q.50 How does each photoexcited electron pass from PS1 to PS2?

A. ETC

B. chemiosmosis

C. photolysis

D. photosynthesis

7 / 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:

A) Cycads

B) Gingko

C) Gnetae

E) Musci

8 / 100

Category: Biology Ch 12 Class 11

Which process takes place during the movement of glucose from the body fluid to the blood?

NUMS 2016
Biology
Nutrition
Elimination Tool:

A) Endosmosis

B) Osmosis

C) Active transport

D) Facilitated diffusion

9 / 100

Category: Biology Ch 7 Class 12

Which of the following is NOT true for meiosis?

NUMS 2019 Reconduct
Biology
Cell Cycle
Elimination Tool:

A) Number of chromosomes reduced to half

B) It takes place at the time of spore formation in plants

C) It takes place at the time of growth in animals

D) Two consecutive cell divisions are involved in it

10 / 100

Category: Biology

Which of the following, which is the incorrectly paired one?

NUMS Mock 2
Biology
Biology and its Major Fields of Specialization

B) Schlelden and schwann … cell theory

C) Robert Brown… nucleus

D) Watson and Crick … DNA model

E) Virchow… mosaic model of plasma membrane

11 / 100

Category: Biology Ch 5 Class 11

First step of viral replication is:

NUMS 2017
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Entry

B) Assembly

C) Uncoating

D) Adsorption or Attachment

12 / 100

Category: Biology Ch 13 Class 11

Smaller the animals:

NUMS 2014
Biology
Gaseous Exchange
Elimination Tool:

A) More rate of respiration

B) Less the rate of respiration

C) Rate of respiration has nothing to do with the size of animal

D) None of these

13 / 100

Category: Biology Ch 3 Class 11

If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation:

Saturation

Denaturation

Composition

Inhibition

14 / 100

Category: Biology Ch 7 Class 12

During meiosis, the homologous chromosomes come together and form pairs, this process is called:

PMC 2020
Biology
Cell Cycle
Elimination Tool:

A) Linkage

B) Synapsis

C) Pairing

D) Crossing over

15 / 100

Category: Biology

Q.7 Ribosomes are assembled in the nucleolus and then exported to cytoplasm via:

Exocytosis

Nuclear Pores

C. Nuclear envelope

D. Carrier mediated diffusion

16 / 100

Category: Biology

Q.49 Another name for the sex cell is:

A. Hormone

B. Gamete

C. Zygote

D. Testicle

17 / 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

18 / 100

Category: Biology Ch 4 Class 11

Which one of the following organelles is required for aerobic respiration?

NTS 2018
Biology
Cell Structure and Function
Elimination Tool:

A) Nucleus

B) Mitochondrion

C) Endoplasmic reticulum

D) Plastids

19 / 100

Category: Biology Ch 13 Class 12

Conversion of ammonium into nitrates is:

UHS 2018
Biology
Man and His Environment
Elimination Tool:

A) Nitrification

B) Nitrogen Fixation

C) Ammonification

D) Denitrification

20 / 100

Category: Biology Ch 13 Class 11

Which one of the following is a genetic disorder in which abnormally thick mucus is produced in the lungs and other parts of the body?

NUMS 2020
Biology
Gaseous Exchange
Elimination Tool:

A) Lung cancer

B) Chronic bronchitis

C) Cystic fibrosis

D) Emphysema

21 / 100

Category: Biology Ch 1 Class 11

Sythetic insulin from pork was formed by which technique:

Parasitology

Social biological techniques

Both a and c

22 / 100

Category: Biology Ch 10 Class 11

Among invertebrates, which possesses the greatest power of regeneration?

NUMS 2015
Biology
Kingdom Animalia
Elimination Tool:

A) Sponges

B) Platyhelminthes

C) Annelids

D) Echinoderms

23 / 100

Category: Biology Ch 10 Class 12

Which one is NOT a continuous trait?

NUMS 2019 Reconduct
Biology
Evolution
Elimination Tool:

A) Human height

B) Tongue rolling

C) Wheat grain color

D) Human skin color

24 / 100

Category: Biology Ch 6 Class 11

Cyanobacteria help in nitrogen fixation because they have:

PMC 2021 Tested
Biology
Kingdom Prokaryote
Elimination Tool:

A) Sodium channels

B) Heterocysts

C) Harmogonia

D) Nitrogenase

25 / 100

Category: Biology Ch 6 Class 12

Diameter of DNA double helix is:

NUMS 2015
Biology
Chromosomes and DNA
Elimination Tool:

A) 3.4 nm

B) 0.3 nm

D) 0.2 nm

C) 2 nm

26 / 100

Category: Biology Ch 7 Class 11

Which of the following is divided by fission?

NTS 2018
Biology
Kingdom Protista
Elimination Tool:

A) Viruses

B) Viroids

C) Bacteria

D) Fungus

27 / 100

Category: Biology Ch 13 Class 11

Which of the following is not an infection of the lungs/respiratory tract?

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

A) Histoplasmosis

B) Tuberculosis

C) Cystic fibrosis

D) None of the given options

28 / 100

Category: Biology Ch 14 Class 11

The favourite host cells of the HIV-Virus are:

NUMS 2014
Biology
Transport
Elimination Tool:

A) Lymphocytes

B) RBCs

C) T-cells

D) B-cells

29 / 100

Category: Biology Ch 3 Class 11

An activated enzyme made of polypeptide chain and a cofactor is?

PMC Practice 2
Biology
Enzymes
Elimination Tool:

A) Substrate

B) Coenzyme

C) Apoenzyme

D) Holoenzyme

30 / 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

A) I, II and III only

B) I, II and IV only

C) I, III and IV only

D) II, III and IV only

31 / 100

Category: Biology

Q.45 Muscle fatigue is characterized by all except:

A. Accumulation of lactic acid

B. pH drops

C. Cross bridges are unable to detach

D. Increased ATP concentration

32 / 100

Category: Biology Ch 2 Class 11

Lipids store double the amount of energy as compared to carbohydrates because of:

PMC 2020
Biology
Biological Molecules
Elimination Tool:

A) High proportion of oxygen

B) High C-O ratio

C) Low proportion of Carbon

D) High proportion of C-H

33 / 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

34 / 100

Category: Biology Ch 11 Class 12

Abiotic components include

Atmosphere

Hydrosphere

Lithosphere

All of these

35 / 100

Category: Biology Ch 12 Class 11

Of the following, which one has more variety of nutrition?

Animals

Bacteria

Plants

Fungi

36 / 100

Category: Biology Ch 13 Class 11

The infection of lungs is called:

PMC Practice 1
Biology
Gaseous Exchange
Elimination Tool:

A) Emphysema

B) Asthma

C) Pneumonia

D) Bronchitis

37 / 100

Category: Biology Ch 4 Class 12

The sexually transmitted disease, that can affect both the male and the female genitals and may damage the eyes of babies born of infected mothers is:

PMC Sample 1
Biology
Reproduction
Elimination Tool:

A) AIDS

B) Hepatitis

C) Gonorrhoea

D) All of these

38 / 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

39 / 100

Category: Biology Ch 2 Class 11

Which bond provides stability to complex carbohydrate molecules?

C-H

C-O

C-C

C-N

40 / 100

Category: Biology Ch 11 Class 12

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

Ecology

Synecology

Autecology

Niche

41 / 100

Category: Biology Ch 6 Class 12

Gene mutations take place in:

NUMS 2014
Biology
Chromosomes and DNA
Elimination Tool:

A) Ribosomes

B) Chloroplasts

C) Deoxyribonucleic acids

D) None of them

42 / 100

Category: Biology Ch 6 Class 12

Which statement is correct?

Leading strand elongates away from the replication fork

Lagging strand elongates towards the replication fork

Lagging strand is constructed discontinuously.

Both a and b

43 / 100

Category: Biology

Q44 Study of fossils is called

A. Mammalogy

B. Paleontology

C. Herpetology

D. Ornithology

44 / 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

45 / 100

Category: Biology Ch 5 Class 12

Germ layers are formed in which stage of development?

NUMS 2020
Biology
Growth and Development
Elimination Tool:

A) Morulation

B) Blastulation

C) Gastrulation

D) Organogenesis

46 / 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:

A) 1 and 4

B) 2 and 4

C) 1 and 2

D) 1,2,3 and 4

47 / 100

Category: Biology Ch 8 Class 12

The trait “Kernel colour in corn” in controlled by how many pairs of genes

One pair

Two pairs

Three pairs

Many pairs

48 / 100

Category: Biology

Q.22 Pick the one which releases anticoagulant in human intestine to prevent clotting:

A. Ascaris lumbricoides

B. Ancylostoma duodenale

C. Enterobius vermicularis

D. Hirudo medicinalis

49 / 100

Category: Biology Ch 8 Class 12

How many genes control Rh blood group system?

One

Two

Three

Four

50 / 100

Category: Biology Ch 11 Class 12

Disease in living organisms caused by parasites is called

Parasitism

Infestation

Predation

Infection

51 / 100

Category: Biology Ch 3 Class 11

Optimal temperature of enzymes present in human body is

27?C

37?C

47?C

30?C

52 / 100

Category: Biology Ch 7 Class 12

In case of neurons, post mitotic cell escapes cell cycle and remain in _______ phase whthout proliferating further

G0 phase

G1 phase

G2 phase

S phase

53 / 100

Category: Biology

Which of the following statements are true for mitochondria and chloroplasts?

A. ATP synthesis is seen in both
B. Outer membrane has more surface area in both
C. Circular naked DNA, RNA, and 70 ribosomes are seen in both
D. Oxidative phosphorylation occurs in both

NUMS Mock 4
Biology
Cell Structure and Function

A) A and B

B) B and C

C) A and C

D) A and D

54 / 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

55 / 100

Category: Biology

Which artery supplies blood to the liver?

NUMS Mock 1
Biology
Transport

A) Pulmonary artery

B) Hepatic artery

C) Celiac artery

D) Thoracic artery

56 / 100

Category: Biology Ch 12 Class 12

Mountains of Koh Hindukush come under

Tundra

Grass land

Tropical forests

Temperate deciduous

57 / 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

58 / 100

Category: Biology

Q.1 In all plants the major sites of photosynthesis are?

A. Leaf

B.Stems

C. Roots

D. Branches

59 / 100

Category: Biology Ch 9 Class 11

Prosopis glandulosa is the botanical name of _______.

NTS 2016 SMBBMC
Biology
Kingdom Plantae
Elimination Tool:

A) Chhui mui

B) Kikar

C) Bauble

D) Devi

60 / 100

Category: Biology Ch 5 Class 12

The reason plants are considered totipotent is:

NUMS 2019 Cancelled
Biology
Growth and Development
Elimination Tool:

A) Each cell has full genetic potential of the organism

B) A single cell could become a complete plant

C) Because they have lesser potential for tissue culturing

D) Both each cell has full genetic potential of the organism and a single cell could become a complete plant

61 / 100

Category: Biology Ch 9 Class 11

Red algae do not contribute towards:

PMC 2020
Biology
Kingdom Plantae
Elimination Tool:

A) Making coral reefs

B) Forming limestone deposits

C) Making fertilizers

D) Forming chalk deposits

62 / 100

Category: Biology Ch 2 Class 12

Which of the following statement is incorrect about Molluscans?

They are surrounded by single or double pieces of hard skeleton.

Their shell grows as the animal grows.

They have hydrostatic skeleton

They move by tube feet

63 / 100

Category: Biology Ch 8 Class 12

Which statement about dominant and recessive alleles is not correct?

NTS 2016 SMBBMC
Biology
Variation and Genetics
Elimination Tool:

A) A dominant characteristic is seen in the phenotype of a heterozygote.

B) A homozygous genotype may be either dominant or recessive.

C) Recessive phenotypes always have two recessive alleles.

D) The phenotype of a homozygote is always dominant.

64 / 100

Category: Biology Ch 1 Class 11

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by :

Molecular biologists

Freshwater biologists

Social biologist

65 / 100

Category: Biology Ch 14 Class 11

Which valve action results from an increase in pressure in the ventricles of the heart?

NTS 2012
Biology
Transport
Elimination Tool:

A) The closing of all the heart valves

B) The closing of semilunar valves

C) The opening of the bicuspid valve

D) The opening of the semilunar valves

66 / 100

Category: Biology

Q.17 A structural component that is found in all viruses is?

A. envelope

B. DNA

C. Capsid

D. Tail Fibers

67 / 100

Category: Biology Ch 8 Class 12

Read the passage below to answer the question:

Haemophilia is a disorder in which blood fails to clot. Saad, a male haemophiliac, marries Sara, a normal woman and together they have four children, two boys (Ahmed and Ali) and two girls (Alia and Ayesha). None of the children display the symptoms of Haemophilia.

Ahmed, Ali, Ayesha, and Ali all marry normal individuals and have children. None of Ahmed’s or Ali’s children, male or female, display symptoms of haemophilia, but the sons of Alia and Ayesha display symptoms of haemophilia while the daughters of Alia and Ayesha do not.

Which of the following best explains the reason that Ahmed, Ali, Ayesha and Alia do not display symptoms of haemophilia, even though their father, Saad, is a haemophiliac.

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

A) Haemophilia is an X-linked disorder, and Saad can only pass on his Y chromosome

B) Haemophilia is an X-linked disorder, and even though Alia and Ayesha receive a hemophiliac X-chromosome from Saad, Sara gave them a normal X-chromosome.

C) Haemophilia is a Y -linked disorder, and therefore cannot be displayed in females

D) Haemophilia is a Y-linked disorder ,and Ahmed and Ali must have received an X Chromosome from Saad

68 / 100

Category: Biology

Q.13 Without enzymes, the biological reaction would proceed at:

A. Same speed

B. Constant speed

C. Very slow speed

D. Variable speed

69 / 100

Category: Biology Ch 7 Class 11

Radiolarians belong to which of the following protozoal group?

Zooflagellates

Actinopods

Foraminifera

Apicomplexans

70 / 100

Category: Biology Ch 4 Class 12

Follicle – stimulating hormone, which is produced by the pituitary gland, stimulates the ovaries to produce:

NUMS 2019 Cancelled
Biology
Reproduction
Elimination Tool:

A) Estrogen

B) Estrogen and progesterone

C) Progesterone

D) Oxytocin

71 / 100

Category: Biology Ch 1 Class 12

Sphincter muscle in urinary system present near the junction of:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

A) Pelvis and ureter

B) Ureter and urinary bladder

C) Urinary bladder and urethra

D) Urethra and bladder

72 / 100

Category: Biology Ch 11 Class 11

Its membranes are the sites where sunlight energy is trapped and where glucose is formed.

Which organelle is this?

NUMS 2014
Biology
Bioenergetics
Elimination Tool:

A) Chloroplast

B) Leucoplast

C) Chromoplast

D) Cytosol

73 / 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

74 / 100

Category: Biology

Which of the following organelles are present in all the bacteria?

NUMS Mock 1
Biology
Kingdom Prokaryote

A) Mesosome

B) Golgi bodies

C) Mitochondria

D) Chloroplast

75 / 100

Category: Biology Ch 7 Class 12

Interphase of meiosis lacks

G0 phase

G1 phase

G2 phase

S phase

76 / 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

77 / 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

78 / 100

Category: Biology Ch 5 Class 11

Vaccine Was discovered by :

Louis Pasteur

Edward Jennar

Ivanowski

Stanely

79 / 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

A) Holoenzyme

B) Apoenzyme

C) Coenzyme

D) Zymoenzyme

80 / 100

Category: Biology Ch 7 Class 12

Crossing over is an exchange of genes between _______ resulting in a mixture of parental characteristics in offspring.

NTS 2019
Biology
Cell Cycle
Elimination Tool:

A) Sister Chromatids

B) Non-homologous Chromosomes

C) Sex chromosomes

D) Homologous chromosomes

81 / 100

Category: Biology Ch 2 Class 12

Skeleton of arms and legs is:

NUMS 2018
Biology
Support and Movement
Elimination Tool:

A) Exoskeleton

B) Endoskeleton

C) Axial skeleton

D) Appendicular skeleton

82 / 100

Category: Biology Ch 1 Class 12

Rose is an example of

Hydrophytes

Mesophytes

Xerophytes

Halophytes

83 / 100

Category: Biology Ch 10 Class 11

Identify the phylum in which the larvae is bilaterally symmetrical but the adult Is radially symmetrical:

NTS 2013
Biology
Kingdom Animalia
Elimination Tool:

A) Ctenophora

B) Coelenterata

C) Echinodermata

D) Sipunculoidea

84 / 100

Category: Biology Ch 11 Class 11

The oxidation of PGAL during glycolysis yields ____ molecules.

NUMS 2019 Reconduct
Biology
Bioenergetics
Elimination Tool:

A) ATP

B) FAD

C) FADH

D) ADP

85 / 100

Category: Biology Ch 13 Class 12

Flow of energy in an ecosystem is:

NUMS 2014
Biology
Man and His Environment
Elimination Tool:

A) Unidirectional

B) Tridirectional

C) Multidirectional

D) Bidirectional

86 / 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

87 / 100

Category: Biology Ch 5 Class 11

There are 3 stages of HIV infection, which sequence is correct

PMC Sample 1
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) AIDS, Chronic HIV, Acute HIV

B) Chronic HIV, AIDS, Acute HIV

C) Acute HIV, Chronic HIV, AIDS

D) all of them

88 / 100

Category: Biology Ch 8 Class 11

Ecological role of fungi as decomposers is only paralleled by

Blue green algae

Cyanobacteria

Bacteria

Virus

89 / 100

Category: Biology Ch 9 Class 11

Which of the following features differentiate angiosperms from gymnosperms?

UHS 2010
Biology
Kingdom Plantae
Elimination Tool:

A) Pollens disperse by air

B) Haploid microspores

C) Ovaries

D) Pollen tubes

90 / 100

Category: Biology Ch 10 Class 12

Natural selection can amplify or diminish variations that are?

PMC Sample 2
Biology
Evolution
Elimination Tool:

A) Heritable

B) non heritable

C) both a and b

D) acquired

91 / 100

Category: Biology Ch 10 Class 11

A characteristics features of Echinoderm is:

NTS 2011
Biology
Kingdom Animalia
Elimination Tool:

A) Canal system

B) Water vascular system

C) Tracheal system

D) Blood vascular system

92 / 100

Category: Biology Ch 10 Class 11

Coelom is a cavity lined by:

NUMS 2016
Biology
Kingdom Animalia
Elimination Tool:

A) Mesoderm

B) Endoderm

D) Ectoderm

C) Epiderm

93 / 100

Category: Biology Ch 13 Class 11

Of the following, which one is better respiratory medium.

Air

Water

Soil

None of these

94 / 100

Category: Biology Ch 4 Class 11

Tissue is a

PMC 2020
Biology
Cell Structure and Function
Elimination Tool:

A) group of cells

B) group of organs

C) group of tissues

D) group of organisms

95 / 100

Category: Biology

Q.29 A monohybrid cross yielded 3:1 in F2. What could be mode of inheritance?

A. segregation

B. independent assortment

C. Both A and B

D. none of these

96 / 100

Category: Biology Ch 5 Class 11

Which one of the following is NOT a mode of transmission of AIDS?

NTS 2019
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Through unsterilized needles

B) Through contact with open wounds

D) Through holding hands

C) Through blood transfusion

97 / 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

98 / 100

Category: Biology Ch 13 Class 11

Most oxygen is transported in the blood:

NUMS 2018
Biology
Gaseous Exchange
Elimination Tool:

A) In the form of bicarbonate ions.

B) Bound to albumin compounds.

C) Dissolved in the plasma.

E) Bound to hemoglobin.

99 / 100

Category: Biology Ch 6 Class 11

Rod-shaped bacteria are known as:

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

A) Cocci

B) Bacilli

C) Spirilla

D) None of these

100 / 100

Category: Biology

Q.3 Which statement about cell membrane is incorrect?

A. Proteins are embedded in lipid bilayer

B. Cholesterol molecules are present in hydrophobic core

C. Central core is hydrophobic

D. Carbohydrates are present on both inner and outer face of the membrane

Your score is

The average score is 57%

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