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 9 Class 12

A technique in transgenic animals in which desired gene is inserted into the eggs of animal is called:

UHS 2015
Biology
Biotechnology
Elimination Tool:

A) Embryonic Stem Cell mediated Transfer

B) Microinjection

C) Retro-virus mediated gene Transfer

D) Virus vectors

2 / 100

Category: Biology Ch 5 Class 12

The only promoter of leaf senescence in the following plant hormones is?

PMC Sample 3
Biology
Growth and Development
Elimination Tool:

A) gibberellins

B) cytokinins

C) auxins

D) abscisic acid

3 / 100

Category: Biology

The photosynthetic pigments of plants are arranged as clusters in thylakoid membranes. The reaction centers of these clusters consist of _____ molecules.

NUMS Mock 3
Biology
Bioenergetics

A) Chlorophyll

B) ATP

C) Carotenoids

D) Glucose

4 / 100

Category: Biology Ch 6 Class 12

Which of the following statements correctly describes homologous chromosomes?

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

A) They are formed during meiosis.

B) They are held together by centromeres.

C) They are chromatids of the same chromosome.

D) They carry both morphologically similar members with same set of genes.

5 / 100

Category: Biology

Q.21 All of the following are true for platyhelminthes except:

A. Flatworms

B. Triploblastic

C. Coelomates

D. Bilateral symmetry

6 / 100

Category: Biology Ch 4 Class 12

The egg-laying birds are called:

NUMS 2016
Biology
Reproduction
Elimination Tool:

A) Oviparous

B) Viviparous

C) Monotremes

D) All of these

7 / 100

Category: Biology Ch 12 Class 11

Hydra is an example of _______ feeder

Fluid

Macrophagous

Fluid

All of these

8 / 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.

9 / 100

Category: Biology Ch 5 Class 12

Turner’s syndrome is characterized by having:

UHS 2015
Biology
Growth and Development
Elimination Tool:

A) Trisomy 21

B) 44 + XXY

C) Trisomy

D) 44 + XO

10 / 100

Category: Biology Ch 5 Class 11

HIV is also known as:

NUMS 2014
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) AIDS

B) HAV

D) HBV

C) HTLV

11 / 100

Category: Biology Ch 11 Class 11

The end product of Glycolysis is:

NTS 2011
Biology
Bioenergetics
Elimination Tool:

A) Glucose-6-phosphate

B) Fructose-6-phosphate

C) Pyruvate

D) 3-Phosphoglycerate

12 / 100

Category: Biology Ch 8 Class 11

An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called:

Mycorrizael association

Endomycorrhizae

Ectomycorrhizae

Lichen

13 / 100

Category: Biology

Q.49 Gastric secretion is stimulated by:

A. Gastrin

B. Cholecystokinin

C. Secretin

D. Pancreozymin

14 / 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

15 / 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

16 / 100

Category: Biology

Q.46 Which part of the brain connects the cerebrum with the spinal cord?

A. Forebrain

B. Cerebrum

C. Cerebellum

D. Brainstem

17 / 100

Category: Biology Ch 4 Class 12

Pituitary gland releases ______ hormone and _______ hormone while ovaries produce _______ and progesterone.

NTS 2019
Biology
Reproduction
Elimination Tool:

A) Follicle-stimulating and luteinizing, estrogen

B) Estrogen and follicle-stimulating, luteinizing

C) Luteinizing arid estrogen, follicle-stimulating

D) Follicle-stimulating and estrogen, luteinizing

18 / 100

Category: Biology Ch 12 Class 12

Coniferous forests located at high altitude are called

Taiga

Alpine

Boreal

Arctic

19 / 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

20 / 100

Category: Biology

Q.59 The last common ancestor of humans is known to be which of the following?

A. Homo neanderthalensis

B. Lemuroidea

Dromaeosaunas

D. Pan troglodytes

21 / 100

Category: Biology Ch 8 Class 12

Baldness is most frequent in

Men

Women

Children

Girls

22 / 100

Category: Biology

Q.52 The plasma pool of antibodies is synthesized from:

A. T- lymphocytes

B. Plasma cells

C. B- lymphocytes

D. Fibroblasts

23 / 100

Category: Biology

Which component enters into mitochondria after glycolysis?

NUMS Mock 1
Biology
Bioenergetics

A) Pyruvate

B) Acetate

C) Oxaloacetate

D) Acetyl – CoA

24 / 100

Category: Biology

Which substance might include this molecule?

NUMS Mock 4
Biology
Biological Molecules

A) Cellulose

B) Cholesterol

C) Glycerol

D) Insulin

25 / 100

Category: Biology Ch 6 Class 11

The function of a cell wall in prokaryotes is:

PMC Practice 1
Biology
Kingdom Prokaryote
Elimination Tool:

A) To give cells rigidity

B) To give specific shape

C) To protect from osmotic lysis

D) All of Above

26 / 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

27 / 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

28 / 100

Category: Biology Ch 10 Class 11

Which one of the following is a fish?

NTS 2012
Biology
Kingdom Animalia
Elimination Tool:

A) Flying fish

B) Salmon

C) Sea horse

D) All of the above

29 / 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

30 / 100

Category: Biology Ch 8 Class 12

The genes which do not follow law of independent assortment

Crossed genes

Linked genes

Recessive genes

Dominant genes

31 / 100

Category: Biology

Which of the following enzymes is used to join DNA fragments?

NUMS Mock 4
Biology
Chromosomes and DNA

A) DNA polymerase

B) Ligase

C) Primase

D) Endonuclease

32 / 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

33 / 100

Category: Biology Ch 13 Class 11

The blood enters the _____ side of heart

Posterior

Lateral

All possibl

34 / 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

35 / 100

Category: Biology Ch 9 Class 11

The space between the overtopped dichotomous branches was occupied by a sheet of which cells during evolution of megaphylls?

PMC Sample 2
Biology
Kingdom Plantae
Elimination Tool:

A) Sclerenchyma

B) Parenchyma

C) Collenchyma

D) Chlorenchyma

36 / 100

Category: Biology Ch 3 Class 11

The cofactor usually acts as “bridge” between:

NUMS 2018
Biology
Enzymes
Elimination Tool:

A) Enzyme & substrate

B) Enzyme & product

C) Coenzyme & substrate

D) Activator & substrate

37 / 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

38 / 100

Category: Biology Ch 13 Class 12

Wild life refers to

All plants of the world

All non cultivated plant

Non domesticated animals

Both b and c

39 / 100

Category: Biology Ch 14 Class 11

The only vein in the human body carrying oxygenated blood is:

NUMS 2020
Biology
Transport
Elimination Tool:

A) Femoral

B) Pulmonary

C) Renal

D) Iliac

40 / 100

Category: Biology

What type of virus is the smallpox virus?

NUMS Mock 1
Biology
Bio-diversity | Variety of Life

A) DNA enveloped virus

B) RNA enveloped virus

C) DNA virus

D) RNA naked virus

41 / 100

Category: Biology

The dark reactions of photosynthesis are characterized by:

NUMS Mock 1
Biology
Bioenergetics

A) Synthesis of ATP, O2 and NADH

B) Utilization of ATP, CO2 and NADPH

C) Electron transfer from NADPH to RuBP

D) Carbon dioxide transfer from RuBP to glucose

42 / 100

Category: Biology Ch 8 Class 11

Lichen is a symbiotic mutualistic association of fungi with

Autotrophs

Roots of vascular plants

Green algae and cyanobacterium

Leguminous plants

43 / 100

Category: Biology Ch 13 Class 12

Hydroelectricity is generated by using ______ of falling water.

Potential energy

Gravitational energy

Kinetic energy

. All of these

44 / 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

45 / 100

Category: Biology

Q.57 Electron transport chain pumps protons across the membrane from __________ to ____________.

A. Thylakoid space, stroma

B. Inter-membrane space, stroma

C. Stroma, inter-membrane space

D. Stroma, thylakoid space

46 / 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

47 / 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

48 / 100

Category: Biology

Q.15 Genes that affect growth rate in humans influencing both weight and height are?

A. Codominant

B. Epistasis

C. Polygene

D. Pleiotrop

49 / 100

Category: Biology Ch 3 Class 11

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

PMC Sample 3
Biology
Enzymes
Elimination Tool:

A) Lipase

B) Protease

C) Amylase

D) Polymerase

50 / 100

Category: Biology Ch 6 Class 11

The causing agent of the tuberculosis that grows very well in poor living conditions and malnutrition is:

NUMS 2019 Cancelled
Biology
Kingdom Prokaryote
Elimination Tool:

A) Spirobacterium

B) Mycobacterium

C) E.Coli

D) Staphylococcus

51 / 100

Category: Biology Ch 11 Class 11

RuBP + O2 —Rubisco—> PGA + _______

NTS 2016 DUHS & JSMU
Biology
Bioenergetics
Elimination Tool:

A) Phosphoglycerate

B) Phosphoglycolate

C) Glycerate

D) Glycolate

52 / 100

Category: Biology Ch 13 Class 11

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

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

A) Pleura

B) Alveoli

C) Chest cage

D) Diaphragm

53 / 100

Category: Biology Ch 3 Class 11

Most enzymes have an optimum temperature of around:

PMC 2020
Biology
Enzymes
Elimination Tool:

A) 30 C

B) 40 C

C) 50 C

D) 20 C

54 / 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

55 / 100

Category: Biology Ch 6 Class 12

In alkaptonuria

Patient's urine contains homogenetisic acid

Urine becomes black

Both a and b

Urine contains phenylalanine

56 / 100

Category: Biology Ch 2 Class 11

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

Metabolic reactions

Catabolic reactions

Anabolic reactions

None of these

57 / 100

Category: Biology Ch 3 Class 11

An enzyme increases the speed of a reaction:

NTS 2012
Biology
Enzymes
Elimination Tool:

A) by adding activation energy requirements

B) by lowering the activation energy requirements

C) by decreasing the concentration of products

D) by increasing the concentration of products

58 / 100

Category: Biology Ch 8 Class 11

Fungi whose growth is favored by fire is called:

NTS 2016 SMBBMC
Biology
Kingdom Fungi
Elimination Tool:

A) Pyrophilus

B) Prophilus

C) Philus

D) Prephylus

59 / 100

Category: Biology Ch 10 Class 12

Which of the following theories or evolution can best explain the vestigial organs.

NUMS 2014
Biology
Evolution
Elimination Tool:

A) Darwinism

B) Lamarckism

C) Natural selection

D) Special creation

60 / 100

Category: Biology Ch 2 Class 12

Many _______ expel a large amount of water by special structures called contractile vacuoles:

NUMS 2020
Biology
Support and Movement
Elimination Tool:

A) Protozoa

B) Porifera

C) Echinoderm

D) Fish

61 / 100

Category: Biology Ch 2 Class 11

Which of the following is an unsaturated fatty acid?

PMC 2020
Biology
Biological Molecules
Elimination Tool:

A) Oleic acid

B) Palmitic acid

C) Butyric acid

D) Acetic acid

62 / 100

Category: Biology

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

NUMS Mock 2
Biology
Kingdom Plantae

A) Radicle

B) Epicotyl

C) Hypocotyl

D) Coleoptile

63 / 100

Category: Biology

Red-green color-blindness is an X-linked recessive disorder. Jacob’s paternal grandfather and father are both color-blind, but his mother has two normal alleles. What is the probability that Jacob is red-green color-blind?

NUMS Mock 2
Biology
Variation and Genetics

A) 0%

B) 25%

C) 50%

D) 75%

64 / 100

Category: Biology

Q40 How is pyruvate produced in anaerobic conditions?

A. Alcoholic fermentation

B. Lactic acid fermentation

C. Respiration

D. Both A and B

65 / 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

66 / 100

Category: Biology

Q.28 Flame cells in Planaria constitute the:

A. Digestive system

B. Reproductive system

C. Respiratory system

D. Excretory system

67 / 100

Category: Biology Ch 1 Class 12

When the temperature of the surrounding environment rises, body responds by:

PMC 2020
Biology
Homeostasis
Elimination Tool:

A) Vasoconstriction

B) Vasodilation

C) Shivering

D) Raising body hairs

68 / 100

Category: Biology Ch 2 Class 11

Which of the following is the constituent of RNA molecule?

NUMS 2019 Cancelled
Biology
Biological Molecules
Elimination Tool:

A) Fatty acids

B) Ribulose

C) Ascorbic acid

E) Ribonucleic acid

69 / 100

Category: Biology Ch 3 Class 11

Upon increasing the temperature the shape of enzyme’s active site?

PMC Sample 2
Biology
Enzymes
Elimination Tool:

A) remains same

B) denatures

C) adopts a geometric conformation

D) dissolves

70 / 100

Category: Biology Ch 4 Class 12

In asexual reproduction offspring are produced by which of the following?

PMC Sample 2
Biology
Reproduction
Elimination Tool:

A) meiosis

B) mitosis

C) both a and b

D) none of these

71 / 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

72 / 100

Category: Biology

Q.62 Which of the following is not a sterilization method for the control of bacteria?

A. Radiation

B. Filtration

C. High temperature

D. Antiseptics

73 / 100

Category: Biology

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

A. NADH

B. Cytochrome a3

C. Water

D. Oxygen

74 / 100

Category: Biology

Q.54 Which of the following elements are not found in carbohydrates?

A.C

B.H

C.N

D. O

75 / 100

Category: Biology Ch 4 Class 12

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

NUMS 2014
Biology
Reproduction
Elimination Tool:

A) Zona Pellucida

B) Zona Vasculosa

C) Zona radiata

D) None of them

76 / 100

Category: Biology Ch 13 Class 12

The actual or preserved remains of the organisms that lived in the ancient past are called:

UHS 2018
Biology
Man and His Environment
Elimination Tool:

A) Fossils

B) Impression

C) Ancient prints

D) Ancient cast

77 / 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

78 / 100

Category: Biology

Q.66 Which one of the following is a non-protein group covalently bonded to a few respiratory enzymes among others?

A. Nicotine adenine dinucleotide

B. Flavin adenine dinucleotide

C. Nicotinamide adenine dinucleotide phosphate

D. All of the above

79 / 100

Category: Biology

Q.60 A small size gene can be get easily by/from:

A. From chromosome

B. Reverse transcription of mRNA

C. Chemically synthesized it

D. Genomic material

80 / 100

Category: Biology Ch 8 Class 12

A pure breeding tall pea plant was crossed to dwarf plant what will be the frequency of dwarf plants in F1

0.25

0.5

0.75

81 / 100

Category: Biology Ch 8 Class 12

In ‘Complete Dominance’:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

A) Different alleles of a gene are both expressed in heterozygous condition

B) One allele (R) is completely dominant over the other (r) and the presence of the recessive allele is functionally hidden, so the heterozygote (Rr) has the same round phenotype as (RR) homozygote.

C) The phenotype of the heterozygote is intermediate between phenotypes of the two homozygotes

D) Gene mutations may produce many different alleles of a gene

82 / 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

83 / 100

Category: Biology

Choose the term from the following which is NOT a part of gene therapy?

NUMS Mock 2
Biology
Biotechnology

A) Bone marrow transplant

B) Retrovirus

C) DNA Fingerprinting

D) Somatic cells

84 / 100

Category: Biology Ch 2 Class 11

According to the fluid mosaic model of cell membrane, which zone is embedded inside?

PMC 2020
Biology
Biological Molecules
Elimination Tool:

A) Hydrophobic

B) Hydrophilic

C) Globular

D) Filamentous

85 / 100

Category: Biology Ch 11 Class 11

Which of the following is a copper containing protein in electron transport chain?

PMC 2020
Biology
Bioenergetics
Elimination Tool:

A) Plastoquinone

B) Cytochrome – C

C) Plastocyanin

D) Ferredoxin

86 / 100

Category: Biology Ch 10 Class 11

Leptocardii is a group of:

NUMS 2015
Biology
Kingdom Animalia
Elimination Tool:

A) Urochordata

B) Cephalochordata

C) Vertebrata

D) Mollusca

87 / 100

Category: Biology Ch 1 Class 12

The water content of mammalian blood is regulated by antidiuretic hormone(ADH). In which part of the nephron does regulation occur ?

NTS 2015 SMBBMC
Biology
Homeostasis
Elimination Tool:

A) The ascending limb of the loop of gentle

B) The collecting duct

C) The descending limb of the loop of gentle

D) The proximal convoluted tubule

88 / 100

Category: Biology Ch 11 Class 11

FADH2 is produced during which step of Krebs cycle?

NUMS 2015
Biology
Bioenergetics
Elimination Tool:

A) When Isocitrate is converted into alpha – ketoglutarate

B) When alpha – Ketogluterate is converted into Succinate

C) When Succinate is converted into Fumarate

D) When Fumarate is converted into Maltose

89 / 100

Category: Biology Ch 13 Class 12

Water constitutes –% of body weight?

A. 25-30%

70-90%

10-30%

30-50%

90 / 100

Category: Biology Ch 1 Class 12

Glomerulus in kidneys is made up of:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

A) Loop of vessels

B) Tubular epithelium

C) Ball of capillaries

D) Cup-shaped swelling

91 / 100

Category: Biology Ch 14 Class 11

The function of papillary muscles is to:

NUMS 2020
Biology
Transport
Elimination Tool:

A) Move blood from semilunar valve into pulmonary vein

B) Prevent the backward flow of blood from the ventricle

C) Push the blood from right atrium to left atrium

D) Push the blood from left atrium to aorta

92 / 100

Category: Biology

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

NUMS Mock 1
Biology
Transport

A) 80 ml

B) 90 ml

C) 70 ml

D) 60 ml

93 / 100

Category: Biology

Q.47 The chemical nature of oxytocin is:

A. Protein

B. Amino acid derivative

C. Polypeptide

D. Steroid Incorrect

94 / 100

Category: Biology

Q.11 Which of the following statement regarding lecithin is correct?

A. Contain only one fatty acid

B. Choline attached with phosphatidic acid at carbon 3

C. Phosphate group is positively charged

D. Have five carbon glycerol molecules

95 / 100

Category: Biology Ch 11 Class 11

Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.

Organic

Energy rich

Energy poor

Reduced

96 / 100

Category: Biology Ch 14 Class 11

Choose the correct pathway for the flow of blood:

NUMS 2020
Biology
Transport
Elimination Tool:

A) Arterioles → metarterioles → capillaries → thoroughfare channels

B) Arterioles → thoroughfare channel → metarterioles → capillaries

C) Thoroughfare channel → arterioles → capillaries → metarterioles

D) Metarterioles → arterioles → thoroughfare channels → capillaries

97 / 100

Category: Biology

Q.67 Interaction between genes occupying different loci is:

A. Dominance

B. Pleiotropy

C. Epistasis

D. Gene linkage

98 / 100

Category: Biology Ch 12 Class 12

Development of bark in plants and skin in animals is a method for

Providing support

Protection from enemies

Reducing water loss

Helping in food production

99 / 100

Category: Biology Ch 9 Class 12

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

PMC Practice 11
Biology
Biotechnology
Elimination Tool:

A) Producing a petrollike fuel from rice

B) Alleviation of vitamin A deficiency

C) Pest resistance

D) Herbicide tolerance

100 / 100

Category: Biology

Lecithin is formed by combining phosphatidic acid with ______:

NUMS Mock 1
Biology
Biological Molecules

A) Serine

B) Choline

C) Inositol

D) Ethanolamine

Your score is

The average score is 61%

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