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Biology | Class 12
Khyber Pakhtunkhwa
Class 12
Biology (
Total Videos: 390
)
Preference
All Chapters
Chapter 14: Respiration
Chapter 15: Homeostasis
Chapter 16: Support And Movement
Chapter 17: Nervous Coordination
Chapter 18: Chemical Coordination
Chapter 19: Behaviour
Chapter 20: Reproduction
Chapter 21: Development And Aging
Chapter 22: Inheritance
Chapter 23: Chromosomes And DNA
Chapter 24: Evolution
Chapter 25: Man and His Environment
Chapter 26: Biotechnology
Chapter 27: Biology And Human Welfare
Show Content
Select a chapter above and press 'Show Content'. Click a video topic below to view.
Chapter 14 Respiration (
24 videos
)
  (
Practice Test
)
14.1: Properties of Respiratory Surfaces (
Practice Test
)
Properties of Respiratory Surfaces
13106 views
14.2: Human Respiratory System (
Practice Test
)
Upper Respiratory Tract (Nose)
11024 views
Pharynx
14559 views
Lower Respiratory Tract (Larynx and Trachea)
5760 views
Bronchi and Bronchioles
5698 views
Alveolar Ducts and Alveoli
The Lungs
12451 views
External Structure of Lungs
14.3: Lung Volumes And Capacities (
Practice Test
)
Lungs Volumes and Capacities
1288 views
14.4: Control of Breathing (
Practice Test
)
Control of Breathing (Ventilation)
5882 views
Inspiration (Inhalation)
705 views
Expiration
469 views
14.5: Mechanism of Transport of Gases (
Practice Test
)
Transport of Oxygen
1438 views
Transport of (CO2)
5655 views
As Carboxyhemoglobin, As a Dissolved Carbon Dioxide in Plasma
2101 views
14.6: Respiratory Pigments (
Practice Test
)
Haemoglobin
1384 views
Myoglobin
1443 views
14.7: Respiratory Disorders (
Practice Test
)
Upper Respiratory Disorder, Sinusitis
798 views
Otitis Media
795 views
Pneumonia, Asthma
8607 views
Pulmonary Tuberculosis (T.B)
1828 views
14.8: Disorders of lungs (
Practice Test
)
Emphysema
2909 views
Lung Cancer
7688 views
Rate of Breathing
1032 views
Chapter 15 Homeostasis (
33 videos
)
  (
Practice Test
)
15.1: Mechanism of Homeostasis (
Practice Test
)
Coordinated Action, Stimuli, Receptors
14790 views
Concept of Feedback
8080 views
15.2: Osmoregulation (
Practice Test
)
Osmoregulation in Animals
17204 views
15.3: Osmoregulation in Animals of Different Environments (
Practice Test
)
Osmoregulation in Different Environments
12639 views
Marine Environment
8056 views
Terrestrial Environment
5959 views
15.4: Excretion (
Practice Test
)
Excretory Organs in Vertebrates, Nephrons, Kidney
6528 views
Nature of Excretory Products in Relation to Habitats
7312 views
Urea
5312 views
Uric Acid
6574 views
15.5: Human Excretory System (
Practice Test
)
Structure of Kidney
49113 views
Nephron
11277 views
Blood Circulation to Nephron
6650 views
Types of Nephron
7109 views
Role of Kidney
27826 views
Function of Kidney
9917 views
Urea Formation, Kidney Filtration
3968 views
Urinary System
9245 views
Kidney as Osmoregulatory Organ
12046 views
Effects of Hormones on The Working of Kidney
4107 views
Concentration of Excretory Product
4743 views
15.6: Urinary Tract Infections (UTIs) (
Practice Test
)
Urinary Tract Infections
3371 views
15.7: Urinary Stones (
Practice Test
)
Kidney Stones
8438 views
Formation of Stones in Kidney
4168 views
Lithotripsy
3666 views
15.8: Renal Failure/Kidney Failure
Renal Failure
13435 views
15.9: Renal Dialysis
Peritoneal Dialysis
20631 views
15.10: Kidney Transplantation
Treatment of Malfunctioned Kidneys
2333 views
15.11: Thermoregulation (
Practice Test
)
Temperature Classification of Animals
6239 views
Classification of Animals on the Basis of Heat Production
Regulation of Heat Exchange Between Animals and Environment
4544 views
Regulatory Strategies
3674 views
Thermostat Function and Feedback Controls in Human and Fever
3770 views
Chapter 16 Support And Movement (
33 videos
)
  (
Practice Test
)
16.1: Human Skeleton (
Practice Test
)
Genetic Causes
3619 views
Hormonal Causes of Skeleton Deformities
3743 views
Cartilages
6653 views
Bones
10019 views
Human Skeleton, Axial Skeleton
38474 views
Skull
3485 views
Ribs
2583 views
Vertebral Column
9 views
Appendicular Skeleton
3189 views
Pelvic Girdle
3262 views
Hind Limb
Types of Joints
11695 views
More on Joints
3205 views
Synovial Joint
4692 views
16.2: Disorders of Skeleton (
Practice Test
)
Disc-Slip
6459 views
Spondylosis
3761 views
Sciatica
4201 views
Arthritis and Its Types
1679 views
Repair of Broken Bones
8478 views
Joint Injuries
16.3: Muscles (
Practice Test
)
Muscular System
4186 views
Muscles and Movements
7571 views
Smooth and Cardiac Muscles
4437 views
Skeletal Muscles, Skeletal Muscle Fibre
12189 views
More on Skeletal Muscles, Skeletal Muscle Fibre
8763 views
Ultrastructure of Myofilament
6912 views
Sliding Filament Model
8807 views
How Bridges are Controlled?
5968 views
Controlling the Actin-Myosin Interaction by Ca++ Ions
11088 views
Arrangement of Skeletal Muscles for Skeletal Movement
4024 views
Origin, Insertion, Belly, Ligaments and Tendons
3142 views
Energy for Muscle Contraction
6576 views
Tetany and Cramp
14328 views
Chapter 17 Nervous Coordination (
30 videos
)
  (
Practice Test
)
17.1: Steps Involved In Nervous Coordination (
Practice Test
)
Stimuli, Receptors, Effectors, Response
16832 views
Working of Sensory Receptors With Special Reference to Skin
4786 views
Coordinated Action, Stimuli, Receptors
14790 views
Coordinators, Effectors and Response
5570 views
17.2: Neurons (
Practice Test
)
Nerve cell or Neuron
14832 views
Neuron Types
10302 views
Nervous Tissue
3224 views
Reflex Action
10745 views
17.3: Nerve Impulse
Nerve Impulse
12246 views
Generation and Transmission of Nerve Impulse
Refractory Period of Neuron
Velocities of Nerve Impulse
17.4: Synapse (
Practice Test
)
Synapse
11029 views
Classification of Neurotransmitters
17.5: Organization of Human Nervous System (
Practice Test
)
The Divisions of Brain, Forebrain
10596 views
The Divisions of Brain, Forebrain
38557 views
Midbrain and Hindbrain
11262 views
Spinal Cord
13955 views
Spinal Cord
4313 views
Peripheral Nervous System
29672 views
More on Peripheral Nervous System
2975 views
Peripheral Nervous System (PNS)
6602 views
More on Peripheral Nervous System (PNS)
4203 views
17.6: Structure and Function of Special Receptors
Other Senses, Smell, Taste and Touch
2404 views
17.7: Effect of Drugs on Nervous Coordination
Effects of Drugs On Nervous Coordination
17.8: Nervous Disorders And Diagnostic Tests (
Practice Test
)
Stroke
849 views
Meningitis
1315 views
Brain Tumour
1249 views
Headache
1311 views
Alzheimer's Disease
3664 views
Chapter 18 Chemical Coordination (
11 videos
)
  (
Practice Test
)
18.1: Hormones: The Chemical Messengers (
Practice Test
)
Chemical Nature of Hormone
5946 views
Mode of Hormone Action
4163 views
18.2: Endocrine System of Man (
Practice Test
)
Important endocrine gland
9123 views
Pituitary Gland
7291 views
Pituitary's Median Lobe and Posterior Lobe
4164 views
Thyroid Gland
10441 views
Parathyroid
7905 views
Pancreas
10728 views
Adrenal Gland
9392 views
Gonads
8639 views
18.3: Feedback Mechanism
Feedback Mechanism
11601 views
Chapter 19 Behaviour (
10 videos
)
  (
Practice Test
)
19.1: Nature of Behaviour (
Practice Test
)
Relationship Between Stimuli and Behaviour
2930 views
Biological Clocks and Circadian Rhythms
11435 views
19.2: Innate Behaviour (
Practice Test
)
Innate Behaviour
11098 views
Non - Orientation Behaviour
5102 views
More on Non-Orientation Behaviour
3243 views
Tropic Movements
5322 views
19.3: Learning Behaviour (
Practice Test
)
Learning
13699 views
More on Learning
6450 views
19.4: Social Behaviours (
Practice Test
)
Social Behaviour
5783 views
More on Social Behaviour
4261 views
Chapter 20 Reproduction (
15 videos
)
  (
Practice Test
)
20.1: Male Reproductive System (
Practice Test
)
Male Reproductive System
15700 views
More on Structure of Male Reproductive System
6253 views
Function of Male Reproductive System
5346 views
Hormonal Control of Male Reproductive System
5499 views
20.2: Female Reproductive System (
Practice Test
)
Female Reproductive System
15779 views
Function of Female Reproductive System
8878 views
20.3: Menstrual Cycle (
Practice Test
)
Menstrual Cycle
14343 views
Hormonal Control of Reproductive Cycles
6842 views
20.4: Disorders of Reproductive System
Causes of male infertility
Causes of female infertility
In Vitro is Fertilization of Plant Egg And Its Importance
5306 views
Treatment of Infertility (In Vitro Fertilization)
Miscarriage
20.5: Sexually Transmitted Diseases (
Practice Test
)
Gonorrhea and Syphilis
AIDS, A Sexually Transmitted Disease
7203 views
Chapter 21 Development And Aging (
24 videos
)
  (
Practice Test
)
21.1: Embryonic Development (
Practice Test
)
Embryo, Embryology and Cleavage
7826 views
Gastrulation
41646 views
Neurulation in Human Embryo
11165 views
21.2: Control of Development (
Practice Test
)
Formation of Neural Crest And its Role in Development
4431 views
Role of Nucleus in Development
8441 views
Role of Cytoplasm in Development
8490 views
Cell Differentiation and Its Mechanism
9336 views
Embryonic Induction Experiment No. 1
18497 views
Embryonic Induction (Second Experiment)
9140 views
Embryonic Induction (Third Experiment)
16145 views
21.3: Human Embryonic Development (
Practice Test
)
Human Embryonic Development
5693 views
Development of Human in First Trimester
Placenta Development, Events of Organogenesis
Second Trimester and Third Trimester
Identical Twins
The Placenta
21.4: Human Birth And Nursing
Labour Process, Clamping And Cutting of Umbilical Cord
Lactation/Nursing
21.5: Disorders During Embryonic Development
Disorders During Embryonic Development
Neural Tube Defects
Limb Development Defects and Thyroid Gland
Genetic Abnormalities Related to Spontaneous Abortion
21.6: Postnatal Development
Postnatal Development
21.7: Aging
Signs And Symptoms of Aging
Chapter 22 Inheritance (
38 videos
)
  (
Practice Test
)
22.1: Mendel's Laws of Inheritance (
Practice Test
)
Mendel’s Law of Segregation
28037 views
Mendel’s Law of Independent Assortment
19410 views
Mendel's Interpretation
5460 views
Punnet Square, Test Cross
4894 views
Statistics and Probability Relevant to Genetics
22.2: Exceptions To Mendelian Inheritance (
Practice Test
)
Complete Dominance
5375 views
Incomplete Dominance
8390 views
Codominance
8185 views
Over Dominance
7142 views
22.3: ABO Blood Group System (
Practice Test
)
Multiple Alleles
7716 views
ABO-Blood Group System
9962 views
22.4: Rh Blood Group System (
Practice Test
)
Rh Blood Group System
675 views
Erythroblastosis Fetalis
8852 views
22.5: Gene Interactions (
Practice Test
)
Epistasis
9802 views
Bombay Phenotype
9914 views
Qualitative Traits
5211 views
Quantitative Traits
5334 views
Wheat Grain Colour
4859 views
Human Skin Colour
3448 views
22.6: Gene Linkage and Crossing Over (
Practice Test
)
Gene Linkage
11098 views
Crossing Over
24910 views
Genetic Recombination
7696 views
22.7: Sex Determination (
Practice Test
)
Patterns of Sex Determination
3770 views
Sex Determination, Chromosome in Drosophila
5522 views
Chromosome in Man
2013 views
Comparison of Chromosomal Determination of Sex Between Drosophila and Humans
4292 views
22.8: Sex Linkage (
Practice Test
)
Sex Linkage in Drosophila
12208 views
Test Cross
8062 views
Reciprocal Cross As A Confirmatory Test
Sex-Linkage in Human
3958 views
X- Linked Dominant Inheritance
5677 views
X- Linked Recessive Inheritance
4883 views
Y- Linked Inheritance
4588 views
Haemophilia
4161 views
More on Haemophilia
2149 views
Sex Linked Inheritance, Colour Blindness
8494 views
Night blindness and Color Blindness
3056 views
Sex Limited Trait, Sex Influenced Trait
7895 views
Chapter 23 Chromosomes And DNA (
37 videos
)
  (
Practice Test
)
23.1: Chromosomes (
Practice Test
)
Types of Chromosomes
14095 views
Composition of Chromosome
25284 views
Gene and Genome, Chromosome, Chromatin
11553 views
Number and Structure of Chromosome
14313 views
23.2: Concept of Gene (
Practice Test
)
Chromosomes, Genes and DNA
14952 views
Structure of a Gene
18435 views
What is a Gene?
7532 views
23.3: Chromosomal Theory of Inheritance (
Practice Test
)
The Chromosomal Theory of Inheritance
27027 views
Gamete - A Vehicle of Inheritance
4638 views
23.4: DNA As Heredity Material (
Practice Test
)
DNA as Hereditary Material, Vehicle
13921 views
More on DNA as Hereditary Material, Vehicle
10170 views
23.5: DNA Replication (
Practice Test
)
Replication of DNA
16059 views
DNA Replication in Prokaryotes and Eukaryotes
4152 views
Types of Replication
5830 views
The Meselson-Stahl Experiment
13174 views
Mechanism of DNA Replication
33400 views
More on Mechanism of DNA Replication
11768 views
23.6: Gene Expression (
Practice Test
)
Transcription
18325 views
Advance Transcription
4411 views
More on Transcription
9405 views
Post-Transcriptional Modification of mRNA
6465 views
Genetic Code
5380 views
Translation
15338 views
Translation, Protein Synthesis
6024 views
More on Translation, Protein Synthesis
3969 views
Difference Between Translation in Prokaryotes and Eukaryotes
2160 views
23.7: Regulation of Gene Expression (
Practice Test
)
Methods of Regulation of Gene Expression
4836 views
Regulation of Gene Expression
6845 views
Mechanism of Negative Control
1754 views
Mechanism of Positive Control
1628 views
23.8: Mutation (
Practice Test
)
Mutations
6593 views
Importance of Mutation
2822 views
Origin of Mutation
Types of Mutation
23.9: Diseases Induced by Mutation (
Practice Test
)
Chromosomal Mutations
5795 views
Chromosomal Mutations (Turner Syndrome)
4338 views
Point Mutation/Gene Mutations
2870 views
Chapter 24 Evolution (
21 videos
)
  (
Practice Test
)
24.1: The Evolution And The Concept of Evolution
Concept of Evolution VS Special Creation
7210 views
24.2: Evolution of Eukaryotes From Prokaryotes (
Practice Test
)
Evolution From Prokaryotes to Eukaryotes
10401 views
24.3: Lamarckism (
Practice Test
)
Lamarckism
3885 views
Inheritance of Acquired Characteristics
5921 views
Objections on Lamarckian Theory
3708 views
24.4: Darwinism (
Practice Test
)
Theory of Natural Selection
11343 views
More on Theory of Natural Selection
2449 views
Objections to Darwin's Natural Selection Theory of Organic Evolution
5164 views
24.5: Neo-Darwinism (
Practice Test
)
Neo-Darwinism - The Modern Evolutionary Synthesis
9034 views
Role of Gene Mutation & Chromosomal Mutation In Natural Selection
1209 views
Gene Frequencies and Their Role in Evolution
4193 views
Evidence From Biogeography and Paleontology
Evidence From Comparative Anatomy
5051 views
Comparative Embryology and Molecular Biology
3493 views
Hardy-Weinberg Theorem
8809 views
More on Hardy-Weinberg Theorem
4284 views
Genetic Drift
2755 views
Species, Origin of Species
1676 views
Allopatric Speciation
1564 views
Parapatric Speciation
Sympatric Speciation
2030 views
Chapter 25 Man and His Environment (
37 videos
)
  (
Practice Test
)
25.1: Biogeochemical Cycles (
Practice Test
)
Water Cycle
3459 views
The Nitrogen Cycle
3523 views
More on Nitrogen Cycle
1332 views
25.2: Energy Flow Through An Ecosystem (
Practice Test
)
Concept of Trophic Levels
Concept of Productivity
Energy Relations Between Different Trophic Levels
566 views
Ecological Pyramids
3570 views
Ecological Pyramids of Biomass
4800 views
Ecological Pyramids of Number
2412 views
Pyramids of Energy
841 views
25.3: Ecological Succession (
Practice Test
)
Succession
3668 views
Two Major Forms of Succession
3751 views
Secondary Succession
1248 views
Stages of Succession
3627 views
Xerosere
2174 views
More on Xerosere
903 views
Hydrosere
844 views
More on Hydrosere
575 views
Wood Land Climax Forest Stage of Hydrosere
430 views
25.4: Population Dynamics
Human Impact on Environment
Population Dynamics
25.5: Human Impact On Environment (
Practice Test
)
Nuclear Power
1342 views
Carbon Dioxide and Global warming
1142 views
Acid Rain
6450 views
Mechanism of Acid Rain
1945 views
Effect of Acid Rain
3475 views
Occurrence of Ozone
1391 views
Ozone in Troposphere
775 views
Ozone Layer Depletion
1408 views
Effect of Ozone Depletion
3297 views
25.6: Environmental Resources And Their Depletion (
Practice Test
)
Renewable and Non-Renewable Resources
4895 views
Renewable Resources (Land and Wildlife)
1832 views
Non - Conventional Energy Sources
2347 views
Tidal Power and Wind Power
1283 views
Solar energy
1073 views
Geothermal Power
840 views
Conventional Energy Resources
1877 views
Chapter 26 Biotechnology (
60 videos
)
  (
Practice Test
)
26.1: Cloning of Gene (
Practice Test
)
Using Bacteria in Genetic Engineering
27401 views
Advance Recombinant DNA Technology, How to Get a Gene
5232 views
Recombinant DNA Technology Depends on Enzymes
2943 views
Molecular Scissor: Restriction Endonucleases
5696 views
Molecular Carrier: Vector
5827 views
More on Molecular Carrier (Vector)
2878 views
Molecular Carrier (Vector) Cosmid and Artificial Chromosome
DNA Ligase and Expression System
2946 views
26.2: Procedure of Recombinant DNA Technology (
Practice Test
)
Expression of the Recombinant DNA
2914 views
26.3: Polymerase Chain Reaction (
Practice Test
)
The Polymerase Chain Reaction
4706 views
Components of PCR
3158 views
Mechanism of PCR
3492 views
Applications of PCR
8141 views
26.4: Genomic Library (
Practice Test
)
Genomic Library
8864 views
Using Probe for Searching Gene in Genomic Library
2796 views
26.5: DNA Sequencing (
Practice Test
)
DNA Sequencing
5611 views
Sanger's Method
9562 views
Gel Electrophoresis
3376 views
Automatic DNA Sequencing
10490 views
Maxam-Gilbert Method
10323 views
26.6: DNA Analysis (
Practice Test
)
Analyzing DNA
4331 views
Procedure of DNA Analysis
6986 views
Application of DNA Analysis
2475 views
Autoradiography
20898 views
26.7: Genome Maps (
Practice Test
)
Genome Analysis
3995 views
The Human Genome Project
5217 views
Benefits of Human Genome Project
2514 views
26.8: Tissue Culture (
Practice Test
)
Tissue Culture
9223 views
Types of Tissue Culture
5201 views
Callus Culture
21539 views
Meristem Culture
12441 views
Anther/Pollen Culture
36430 views
Embryo Culture
23875 views
Ovary Culture
10521 views
Animal Cell Culture
5484 views
Techniques of Animal Cell Culture
8390 views
Application of Animal Cell Culture
4389 views
26.9: Transgenic Organisms (
Practice Test
)
Transgenic Bacteria
3120 views
Role of Transgenic Bacteria in Human Welfare
3035 views
Ecological Concerns Surrounding Transgenic Bacteria
842 views
Transgenic Plants
8973 views
Agrobacterium Mediated Transformation
4603 views
Electroporation Method
6823 views
Agricultural plants With Improved Traits
1369 views
Application of Transgenic Plants
4814 views
Transgenic Animals
3843 views
Methods of Creation of Transgenic Animals
14583 views
Application of Transgenic Animals
3650 views
26.10: Biotechnology And Health Care (
Practice Test
)
Role of Biotechnology in Diagnosis of Diseases
2189 views
Monoclonal Antibodies in Diagnosis of Diseases
1930 views
DNA/RNA Probes
11520 views
Gene Therapy
4158 views
Gene Therapy (Ex-Vivo)
3917 views
Gene Therapy In-Vivo Method
2883 views
Cystic Fibrosis
2080 views
26.11: Scope And Importance of Biotechnology (
Practice Test
)
Bio-Chips
5679 views
Bio-Fertilizers
3303 views
Application of Genetically Modified Bacteria
2437 views
Application of Transgenic Plants
4814 views
Nanotechnology
607 views
Chapter 27 Biology And Human Welfare (
17 videos
)
  (
Practice Test
)
27.1: Integrated Disease Management
Immunization and Vaccination
4678 views
27.2: Vaccination
Immunization and Vaccination
4678 views
Types of Vaccines
27.3: Schedule of vaccination Against Common Diseases
Schedule of vaccination against common diseases
27.4: Animal Husbandry (
Practice Test
)
Animal Husbandry
Methods of Creation of Transgenic Animals
14583 views
27.5: Latest Technique Used For Plants
Methods of Plant Breeding for Crop Improvement and Hybridization
Acclimatization And Backcross
Selective Breeding
Role of Genetic Engineering in Crop Improvement
27.6: Home Gardening
Home Gardening
27.7: Roles of Microbes in Human Welfare (
Practice Test
)
Role of Transgenic Bacteria in Human Welfare
3035 views
Ecological Concerns Surrounding Transgenic Bacteria
842 views
Application of Genetically Modified Bacteria
2437 views
Biological Principles of Sewage Treatment
1136 views
Bioremediation
1405 views
Role of Microbes in Energy Generation
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