Biology MCQs For USAT Lecturer MDCAT NTS Test Pdf Notes

Most important and highly repeated MCQs from Past Papers of Lecturer MDCAT USAT and NTS Tests.

Tibia Is A Bone Found In The ——?
A. Skull
B. Arm
C. Leg
D. Face
Which Is The Largest Gland In The Human Body?
A. Thyroid
B. Liver
C. Pancreas
D. None Of These
Water Has Maximum Density At——?
A. 0°C
B. 4°C 
C. 4° K
D. 4.8°C
The Scientific Study Of Livings Is Called?
A. Anatomy
B. Biology
C. Geology
D. Zoology
The Word “BIOLOGY” Has Been Derived From—– Word?
A. Latin
B. English
C. Greek 
D. French
According To the Modern System Of Taxonomy, Living Organisms Have Been Classified Into?
A. Three Kingdoms
B. Five Kingdoms
C. Two Kingdoms
D. Six Kingdoms
Kingdom Protoctista Includes——?
A. Fungi
B. Prokaryotes
C. Protists 
D. Plantae
Kingdom Fungi Includes——–?
A. A Cellular, Eukaryotic Organisms
B. Non-Chlorophylls, Multicellular Eukaiyotlc Organisms
C. Non-Chlorophylls, Multicellular, Thailophytic Organisms 
D. Chlorophyllus, Multicellular, Eukaryotic Organisms
Earthworm Is Included In——-?
A. Kingdom Plantae
B. Kingdom Protoctista
C. Kingdom Monera
D. Kingdom Animalia
The Study Of Organisms Inhabiting The Sea And Ocean And The Physical And Chemical Characteristics Of Their
Environment Is:
A. Social Biology
B. Marine Biology
C. Environmental Biology
D. Fresh Water Biology
Humans Can Hear In The Range Of — To —-Hertz (Hz).?
A. 10 Hz To 10,000 Hz.
B. 20 Hz To 20,000 Hz. 
C. 30 Hz To 30,000 Hz.
D. 40 Hz To 40,000 Hz.
Branches Of Biology And Medicine Concerned With The Structure And Function Of Plant And Animal Cells Is
Called——?
A. Nephrology
B. Semiology
C. Orology
D. Cytology
Which Part Of The Brain Regulates Body Temperature?
A. Cerebellum
B. Cerebrum
C. Hypothalamus
D. Medulla
A Vegetable Containing Sulphur Is——?
A. Potato
B. Cabbage
C. Brinjal
D. Pumpkin
Which Type Of Motions Are Present In Solid?
A. Translational
B. Rotational
C. Vibrational
D. All Of These
If A Man Having Blood Group AB Marries A Woman Who Is Heterozygous For Blood Group, What Is The
Probability Of Their First Child Having Blood Group B?
A. 40%
B. 45%
C. 50% 
D. 71%
Animals Living In The Three Trunks Are Known As——?
A. Arboreal
B. Volant
C. Amphibious
D. Aquatics
Who Discovered The Peptic Ulcer Causing Bacteria H.PYLORI?
A. Robert Hook
B. James Parkinson
C. Dr. Barry Marshall And Dr. Robin Warren
D. None Of These
Which Of The Following Endoplasmic Reticulum Has No Ribosome On Its Surface?
A. Smooth
B. Rough
C. Both
D. All Of the Above
Which Of The Following Gas Discovered By Scheele?
A. Chlorine
B. Hydrogen
C. Oxygen
D. Carbon Dioxide
In Plants There Are—-Basic Types Of Tissues?
A. 2
B. 3
C. 4
D. None Of These
Simple Tissues And Complex Tissues Are Two Groups Of—–Tissues.
A. Meristematic
B. Permanent
C. Epidermal
D. Supporting
Which Of The Following Consists Of The Dead Cells?
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. None Of These
Xylem And Phloem Are Conducting Tissues Found In ……….?
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A. Animals
B. Plants
C. Micro-Organisms
D. All The Above
Human Brain Contains—–Neurons.
A. 10,000,00
B. 100,000,000
C. 100,000,000,000 
D. 1000
Which Of The Following Are Connective Tissues?
A. Cartilage
B. Bone
C. Blood
D. All The Above 
Which One Of These Structures Involved In the Replication Of Bacterial DNA?
A. Chromosomes
B. Pilli
C. Plasmid
D. Mesosome
Adult Human Brain Is About—–% Of The Total Body Weight.
A. 2%
B. 3%
C. 7%
D. 8%
The Branch Of Biology Which Deals With The Use Of Data And Techniques Of Engineering & Technology Concerning Living Organisms Is:
A. Human Biology
B. Environmental Biology
C. Genetics
D. Bio-Technology
The Branch In Which Organism’s Life Cycle, Mode Of Transmission, And Interaction With Their Hosts Are Studied Is:
A. Anatomy
B. Physiology
C. Parasitology 
D. Social Biology
The Molecules Of Living Matter That Provide Building Blocks Are Mostly Based On:
A. Carbon
B. Nitrogen
C. Hydrogen
D. Ammonia
Human Blood Is An Example Of—–?
A. Organelle
B. Tissues
C. Organic Compound
D. Inorganic Compounds
With Different Chemical Arrangements And The Formation Of Complex Molecules, The Life Emerges On The Level
Of The?
A. Cells
B. Tissues
C. Organs
D. Organ System
Organelles Are——–?
A. Unicellular Structures
B. Multi-Cellular Structures
C. Sub-Cellular Structures
D. Non-Cellular Structures
Functional Unit Of DNA Is——?
A. Nucleus
B. Genes
C. Chromosomes
D. Nucleolus
Various Tissue Types Combine To Make Up—–?
A. Cells
B. Organs
C. Organ System
D. Organelles
Two Or More Populations Of Different Species Living And Interacting In The Same Area Form
A. Biosphere
B. Community 
C. Population System
D. Ecosystem
E. Species
A Group Of Similar Cells That Perform A Specific Function Is:
A. Organ
B. Tissues
C. Organelle
D. Organ System
Which Of The Following Organ Is Responsible For Body Metabolism?
A. Kidney
B. Liver
C. Lungs
D. Heart
The Part Of The Brain That Connects The Two Hemispheres Of The Brain Is Called——?
A. Corpus Callosum
B. Medulla Oblongata
C. Cerebral Cortex
D. Cerebellum
In Which Phase Of Cell Cycle Cell Organelles Are Formed?
A. S Phase
B. G1 Phase
C. G2 Phase
D. G0 Phase
Vacuoles Are Fluid-Filled Sacs Surrounded By A Membrane Called—–?
A. Tonoplast
B. Nuclear Membrane
C. Cell Membrane
D. Cell Wall
During The Process Of Cell Division Which Of The Following Divides First?
A. Cytoplasm
B. Vacuoles
C. Mitochondria
D. Nucleus
Which Of The Following Manufactures Carbohydrates By The Process Of Photosynthesis?
A. Chloroplast
B. Chromoplast
C. Leucoplast
D. All Of These
Which Of The Following Is Called Protein Synthesizing Machine?
A. Mitochondria
B. Nucleus
C. Chromosomes
D. Ribosomes
Cell Wall Is The Non-Living, Outermost Boundary Of—–Cell?
A. Plant
B. Bacterial
C. Fungal
D. All The Above
The Light Microscope Can Make The Object—–Times Bigger?
A. 10 Times
B. 100 Times
C. 1000 Times 
D. 10000 Times
Which Of The Following Is A Selectively Permeable Membrane?
A. Cell Wall
B. Cytoplasm
C. Cell Membrane
D. None Of These
Which Of The Following Is An Example Of a “Molecule”?
A. Chloroplast
B. A Nerve Cell
C. DNA
D. Hydrogen
A Group Of Very Similar Inter Breeding Organisms Constitutes?
A. Biosphere
B. Ecosystem
C. Population
D. Species
Members Of One Species Inhabiting The Same Are Form—–?
A. Species
B. Community
C. Ecosystem
D. Population
On The Basis Of Collected Facts And figures, A Scientist Formulates A Factitive Statement Called:
A. Observation
B. Research Work
C. Hypothesis
D. Inductive Reasoning
Robert Hooke Discovered——-?
A. Nucleus
B. Mitochondria
C. Cell
D. DNA
Steps Involved In Scientific Method Are?
A. Hypothesis –>Accumulated Data –> Observation & Experimentation –> Conclusion
B. New Data —> Conclusion —> Accumulated Data —> Observation & Experimentation
C. Accumulated Data – New Data – Observation & Experimentation – Hypothesis –> Conclusion
D. Accumulated Data —> Hypothesis –> Observation & Experimentation —> New Data —> Conclusion
Malaria Is Associated With——?
A. Culex Mosquito
B. Culiesta Mosquito
C. Anopheles Mosquito
D. Culex & Anopheles Mosquito
Biologist ‘Grass’ Discovered The Life Cycle Of Plasmodium In—-?
A. 1896
B. 1897
C. 1898
D. 1899
The first Antibiotic To Be Discovered Was——-?
A. Penicillin
B. Cephalosporin
C. Amino Glycosides
D. Erythromycin
Immunization By Vaccination Was first Introduced By?
A. Fleming In 1945
B. Florey & Chain In 1975
C. Flore & Chain In 1795
D. Edward Jenner In 1795
Oil Body Is Found In The Cells Of——?
A. Diatoms 
B. Slime Moulds
C. Chlorophycean Forms
D. None Of The These
Diatoms Stay Afloat Due To——?
A. Flagella
B. Stored Lipids
C. Pseudopodia
D. All Of These
Diatomaceous Earth Is Used For Making —–?
A. Fertilizers
B. Weedicides
C. Insecticides
D. Fire Proof Bricks 
Locomotion In Diatoms Is Carried Out With The Help Of—–?
A. Valve
B. Raphe
C. Pseudopodium
D. Cilia Or Flagella
Golden Brown Colour Of Diatoms Is Due To Presence Of—–?
A. Mycoxanthin, Mucoxanthin, And Myxoxanthophylls
B. Alpha And Beta Carotenes And Myxoxanthin
C. Fucoxanthin, Diatoxanthin, Diadinoxanthin
D. None Of The Above
Which Of The Following Is Not Nocturnal?
A. Bedbug
B. Mosquito
C. Butterfly
D. Cockroach
Which One Of These Is An Insect?
A. Mite
B. Spider
C. Moth 
D. Scorpion
A Moth Is Closely Related To—–?
A. Wasp
B. Beetle
C. Cricket
D. Butterfly
Which One Of These Is A Set Of Useful Insects?
A. Sandfly , Butterfly, Hoeybee
B. Sikmoth, Honeybee, Locust
C. Honeybee, Silkmoth, Tsetse Fly
D. Honeybee, Lac Insect, Cochineal Insect
Which Of The Following Organ Is Responsible For Blood Filtration:
A. Liver
B. Kidney 
C. Lungs
D. Heart
The Science Of Growing Terrestrial Plants In An Aerated Solution Is—–?
A. Hydrodynamics
B. Hydroponics 
C. Hydroponics
D. None Of Them
An Educated Guess Is Called:
A. Accumulated Data
B. Observation
C. Hypothesis 
D. Conclusion
Dolly, The Sheep Was A Highly Successful Clone From A Somatic Cell, Reported Back In—-?
A. 1993
B. 1994
C. 1995
D. 1996 
Crop Rotation Helps In——-?
A. Growth Of Pathogens
B. Soil Infertility
C. Slowing Of Crops Growth
D. Eradication Of Disease 
People Living In High Altitudes (Like Mountains) Usually Have A —–?
A. Smaller Number Of Red Blood Cells
B. Larger Number Of Red Blood Cells 
C. Smaller Number Of White Blood Cells
D. Larger Number Of White Blood Cells
Which Character Differentiates Living Things From Non-Living Organisms?
A. They Live In The Same Ecosystem.
B. They Are Highly Organized And Complex Made Of One Or More Cells And Contain Genetic Material
C. They Are Acted Upon By The Same Environment
D. Both A And B
Which Vitamin Is Needed For The Formation Of A Light-Sensitive Pigment In The Retina?
A. Vitamin A 
B. Vitamin C
C. Vitamin D
D. B Complex
The Average Internal Temperature Of the Human Body Is —–?
A. 35 Oc
B. 36 Oc
C. 37 Oc 
D. 38 Oc
The Study Of Fossils Is Called?
A. Environmental Biology
B. Historical Biology
C. Palaeontology 
D. Social Biology
About —– Of The Body Weight Of A Mammal Is Water?
A. 60%
B. 65%
C. 70% 
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D. 75%
Diatoms Are Found In—–?
A. Phytoplanktonic Population
B. Freshwater Lakes And Ponds
C. Marine Environment
D. All Of The Above 
Centric Discoid Form Of Diatoms Is—–?
A. Diplaneis
B. Coscinodiscus 
C. Camphyloneiscus
D. Stephanotis
Microfossils Often Present In Petroleum Producing Formations are Those Of—–?
A. Diatoms 
B. Heliozoans
C. Radiolarians
D. Foraminiferans
Cell Wall Is Richly Impregnated With Silica In—–?
A. Rhodophyta
B. Phaeophyta
C. Baciliariophyta 
D. Euglenophyta
The Cell Wall Is Usually Composed Of Two Overlapping Halves Called Epitheca And Hypotheca In—–?
A. Diatoms 
B. Desmids
C. Pyrrophyta
D. Chlorophyta
Unlike Other Algae, Diatoms Do Not Readily Decay Due To——?
A. Nonliving Cells
B. Siliceous Wall 
C. Mucilaginous Wall
D. Water Proof Cell
Cell Wall Is Extremely Well Preserved In Fossil Specimens In—–?
A. Diatoms 
B. Dinoflagellates
C. Slime Moulds
D. None Of These
Empty Diatom Cells Are Called——?
A. Raphe
B. Valves
C. Frustule 
D. Girdles
Diatom Frustule/ Shell Is Made Of——-?
A. Silica 
B. Calcium Carbonate
C. Magnesium Carbonate
D. Both B. And C.
The Chloroplasts Of Diatoms And Chrysophycean Algae Do Not Possess——?
A. Chloryphyllpigments
B. Enzymes For Photolysis
C. Defined Grana And Stroma 
D. Carotenes With Chlorophylls
The Experiments On DNA Molecules In Chromosomes For Knowing The Basis Of Inherited Diseases Are
Conducted By?
A. Molecular Biologists 
B. Microbiologists
C. Freshwater Biologists
D. Social Biologist
On Wound —– Fight Foreign Particles, Like Bacteria?
A. White Blood Cells 
B. Red Blood Cells
C. Platelets
D. Plasma
Synthetic Insulin From Pork Was Formed By Which Technique?
A. Biotechnology 
B. Social Biological Techniques
C. Parasitology
D. Both A And C
Blood Is Carried Towards The Heart By —–?
A. Arteries
B. Capillaries
C. Veins 
D. None Of These
The Branch Of Biology Which Deals With The Study Of Social Behavior And Communal Life Of Human Beings
Living In Any Environment Is Called?
A. Environmental Biology
B. Social Biology 
C. Human Biology
D. Both B And C
—– Is Essential For The Formation Of Hemoglobin.
A. Calcium
B. Iron 
C. Water
D. Carbohydrates
Out Of 92 Naturally Occurring Chemical Elements How Many Are Considered As Bio-Elements?
A. 6

B. 16
C. 26
D. 15
—— Are Needed As A Source Of Energy For The Vital Activities Of The Body?
A. Calcium
B. Iron
C. Water
D. Carbohydrates 
Oxygen Accounts For — % Of Totals Human Body Mass?
A. 65% 
B. 18%
C. 10%
D. 3%
The Atoms Of Different Elements Combine With Each Other Through Ionic Or Covalent Bonding To Produce
Compounds This Stable Form Is Called:
A. An Organ
B. A Molecule 
C. Tissue
D. Both A And C
Which One Of Them Is A Micro-Molecule?
A. Polysaccharide
B. Protein
C. Hemoglobin
D. ATP 
A Structure Formed By Groups Of Similar Cells Organized Into Loose Sheets Or Bundles Performing Similar
Functions Are Called As:
A. An Organ
B. An Organism
C. A Tissue 
D. A Cell
Haemodialysis Means Cleaning Of——?
A. Urine
B. Blood 
C. Glomerular Filterate
D. Coelomic Fluid
In Animals Coordination Is Achieved By Means Of?
A. Nervous System
B. Endocrine System
C. Respiratory System
D. Both A And B 
Production Of Sweat And Sebum Is Related With?
A. Skin
B. Liver
C. Lungs
D. GIT
Group Of Living Organisms Of The Same Species Living In The Same Place At The Same Time Is Called?
A. Community
B. Population 
C. Ecosystem
D. Biome
The Evaporative Cooling In The Respiratory Tract Of Dogs Is Called?
A. Vasodilation
B. Vasoconstriction
C. Panting 
D. All Of These
Different Species Of Plants And Animals Living In The Same Habitat Is Called?
A. Population
B. Community
C. Biome
D. Habitat
Which Of The Following Pathogen Type Cause Disease That Can Be Treated With Antibiotics?
A. Bacteria 
B. Fungi
C. Virus
D. None Of These
A Large Regional Community Primarily Determined By Climate Is Called?
A. Population
B. Community
C. Biome 
D. Habitat
Page 21
In All Arthropods, The Body Is Covered With A Chittinous Cuticle Which Is Secreted By The——?
A. Endodermis
B. Mesophyll
C. Chitin
D. Epidermis 
In Many Phylum The Body Of An Organisms Is Usually Divided Into There Regions Called the Head, Thorax
And Abdomen?
A. Arthropods
B. Chordata
C. Annelida
D. Echinodermata
In Man Which Organisms Cause Abscesses On The Skin Of Arms Or Legs?
A. Ascaris
B. Bacteria
C. Ring Worm
D. Guinea Worm 
Chitin In Cockroach Is Absent In——?
A. Epicuticle 
B. Exocuticle
C. Endocuticle
D. All Of These
Melanin Pigment In Cockroach Is Found In—–?
A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All Of These
The Bristles On The Body Of The Cockroach Arise From—–?
A. Epidermis
B. Trichogen Cell
C. Basement Membrane
D. Malpighian Cell
The Wax Present On The Body Of Cockroach Is Secreted:
A. Mucocytes
B. Leucocytes
C. Oenocytes
D. Granulocytes
Which Organisms Are Sometimes Called The ” Pastures Of The Sea”?
A. Diatoms 
B. Radiolarians
C. Dinoflagellates
D. Foraminiferans
Diatoms Belong To——?
A. Chrysophyta
B. Bacillariophyceae
C. Xanthophyceae
D. Both A. And B. 
Which One Of The Following Is Representing The Group Of Diatoms?
A. Pinnularia, Navicula, Cymbella, Melosira
B. Euglenamorpha, Hedneria, Heteronema, Calcium
C. Nostoc, Anabaena, Aulosira, Cylindrospermum
D. Cochlodinium, Gymnodinium, Lenodinium, Peridinium
Most Cell Membranes Are Composed Principally Of?
A. DNA Ad Protein
B. Protein And Lipids 
C. Protein And Chitin
D. Protein And RNA
The Concept That Various Organisms Dominated This Planet During Various Geological Time Period And Thus
Placing Organisms In A Time Sequence Came From The Studies By?
A. Environmental Biologist
B. Paleontologist 
C. Marine Biologist
D. Social Biologist
Normally, In The Process Of Osmosis, The Net Flow Of Water Molecules Into Or Out Of The Cell Depends Upon
Differences In The?
A. Concentration Of Water Molecules Inside And Outside The Cell
B. Concentration Of Enzymes On Either Side Of The Cell Membrane
C. Rate Of Molecular Motion On Either Side Of The Cell Membrane
D. None Of These
It Is Possible To Date The Rocks By Comparing The Amount Of Specific Radioactive Isotopes They Contain. Which Of The Statement Is Correct In This Respect?
A. Older Sediment Layers Have Equal Amount Of These Radioactive Isotopes As That Of The Young Ones
B. Older Sediment Layers Have Less Amount Of These Radioactive Isotopes As That Of The Young Ones.
C. Older Sediment Layers Have Greater Amount Of These Radioactive Isotopes As That Of The Young Ones.
D. Older Sediment Layers Did Not Have These Radioactive Isotopes
Sodium Ions Are “Pumped” From A Region Of Lower Concentration To A Region Of Higher Concentration In The Nerve Cells Of Humans. This Process Is An Example Of
A. Diffusion
B. Passive Transport
C. Osmosis
D. Active Transport 
An Unbroken Series Of Species Arranged In Ancestors To Descendent Sequence With Each Later Species Having Evolved From One That Immediately Preceded It Is Called?
A. Biome
B. Phyletic Lineage
C. Community
D. Population
Proteins Are Made From Amino Acids By The Process Of ——-?
A. Hydrolysis
B. Pinocytosis
C. Dehydration Synthesis
D. Active Transport
Biological Sciences Have A Set Methodology And It Is Based On?
A. Experimental Inquiry
B. Esthetic Preference
C. Philosophical Ideas
D. Imaginations

BIOLOGY IMPORTANT MCQs
Which Is An Organic Compound Found In Most Cells?
A. Water
B. Glucose 
C. Oxygen
D. Sodium Chloride
A Series Of Hypothesis Supported By The Results Of Many Tests Is Called?
A. Scientific Law
B. Theory 
C. Data
D. Deduction
Which Are The Four Most Abundant Elements In Living Cells?
A. Carbon, Oxygen, Nitrogen, Sulfur
B. Carbon, Oxygen, Hydrogen, Nitrogen 
C. Carbon, Oxygen, Sulfur, Phosphorus
D. Carbon, Sulfur, Hydrogen, Magnesium
Which One Is Not Correct For A Productive Theory?
A. It Is Predictive
B. It Has Explanatory Power
C. It Discourages Suggestion Of Different Hypotheses 
D. None Of These
Conclusion Of Mendel Work Latter Became A——-?
A. Scientific Hypothesis
B. Theory
C. Scientific Law 
D. Productive Theory
Starch Is Converted Into Maltose By?
A. Diastase
B. Invertase
C. Maltase
D. Amylase
Breeders Have Developed New And Better Varieties Of Food Items By Using Which Technique?
A. Pasteurization
B. Hydroponic Culture Technique
C. Genetic Engineering
D. Biological Control Techniques
Co-Enzyme Is Often Formed From?
A. Lipid
B. Protein
C. Inorganic Ion
D. Vitamin
Production Of Genetically Identical Copies Of Organisms/Cells By Asexual Reproduction Is Called?
A. Mitosis
B. Replication
C. Cloning
D. Biological Control
Messenger RNA Is Formed In—–?
A.Nucleus
B.Chloroplast
C.Mitochondria
D.None Of These
Astronauts May Use Which Technique To Grow Fruits And Vegetables?
A. Tissue Culture Techniques
B. Cloning
C. Pasteurisation
D. Hydroponic Culture Technique 
Number Of Chromosomes In E.Coli?
A. 1 
B. 2
C. 4
D. 6
The Nephridia Of Earthworm Open Into The Coelom By—–?
A. Nephrostome 
B. Nephridiopore
C. Flame Cell
D. Anus
Nephrostome In Earthworm Opens In——?
A. External Space
B. Internal Body Cavity 
C. In Gut
D. In Bladder
Dog Fish Belong To The Group Of Fishes Called—–?
A. Cartilaginous Fishes
B. Bony Fishes
C. Running Fishes
D. Jawless Fishes
They Are Considered To Be The Most Primitive And Are Surely The First Of The Vertebrates?
A. Frogs
B. Reptiles
C. Amphibians
D. Jawless Fishes
Sub-Phylum Vertebrate Is Also Known As—–?
A. Pisces
B. Craniata
C. Aves
D. Amphibia
The Phylum Chordata Comprise About How Many Species?
A. 25,000
B. 50,000
C. 100,000
D. 10,00,000

BIOLOGY IMPORTANT MCQs