हिंदी

Nutrition in Human Beings

Topics

Chemical Substances-Nature and Behaviour
Chemical Reactions and Equations
- Chemical Reaction
- Characteristics of Chemical Reactions
- Chemical Equations
- Balanced and Unbalanced Chemical Equations
- Balancing Chemical Equation
- Types of Chemical Reactions > Combination Reaction
- Types of Chemical Reactions > Decomposition Reaction
- Types of Chemical Reactions > Single Displacement Reaction
- Types of Chemical Reactions > Double Displacement Reaction
- Types of Chemical Reactions > Reversible and Irreversible Reactions
- Types of Chemical Reactions > Oxidation and Reduction Reactions
- Corrosion of Metals
- Rancidity
World of Living
Acids, Bases and Salts
- Introduction to Acids, Bases and Indicators
- Indicators for Testing Acids and Bases
- Acids
- Properties of Acids
- Common Properties of Acids
- Uses of Acids
- Bases
- Properties of Bases
- Uses of Bases
- Chemical Properties of Acids and Bases
- Common Properties of Acids and Bases
- Strength of Acid and Base Solutions : pH Scale
- Universal Indicator
- Importance of pH in Everyday Life
- Salts
- Salts > Family of Salts
- Salts > pH of Salts
- Common Salt
- Sodium hydroxide
- Washing Soda
- Baking Soda
- Bleaching Powder
- Plaster of Paris
- Water of Crystallisation: Hydrated Salts
Natural Phenomena
Metals and Non-metals
Carbon and its Compounds
Effects of Current
Natural Resources
Life Processes
- Characteristics of Living Things
- Life Processes in Living Organisms
- Nutrition
- Autotrophic Nutrition
- Heterotrophic Nutrition
- Nutrition in Plants
- Experiments on Photosynthesis
- Raw Materials for Photosynthesis
- Site of Photosynthesis
- Nutrition in Animals
- Nutrition in Amoeba
- Nutrition in Human Beings
- Respiration
- Aerobic Respiration
- Anaerobic Respiration
- Respiration in Plant
- Respiration in Animals
- Human Respiratory System
- Transportation in Living Organisms
- Transportation in Plants
- Transportation in Human Beings
- Blood
- Human Circulatory System
- Blood Pressure (B.P.)
- Lymph and Lymphatic System
- Excretion
- Excretion in Plants
- Excretion in Animals
- Excretion in Human Beings
- Renal Failure (Kidney Failure)
- Organ and Body Donation
Control and Coordination
- Response to Stimuli
- Coordination in Plants
- Plant Hormones
- Plant Movements
- Tropic Movements in Plants
- Phototropism
- Geotropism
- Chemotropism
- Hydrotropism
- Thigmotropism
- Nastic Movements
- Thigmonasty
- Photonasty
- Coordination in Animals
- Human Nervous System
- Peripheral Nervous System (PNS)
- Central Nervous System (CNS)
- Autonomic Nervous System (ANS)
- Voluntary Nervous System
- The Human Brain
- The Spinal Cord
- Biomolecules in the Cell > Hormones
- Endocrine Glands
- Human Endocrine System
How do Organisms Reproduce?
Heredity
- Heredity
- Variation
- Accumulation of Variation During Reproduction
- Gregor Johann Mendel – Father of Genetics
- Monohybrid Cross
- Dihybrid Cross
- Characteristics (or Traits) Transmitted to Progeny
- Inheritance of Blood Groups
- Sex Determination in Humans
- Acquired and Inherited Traits
Light – Reflection and Refraction
- Nature of Light
- Reflection of Light
- Reflection of Light from Plane Surfaces: Plane Mirror
- Law of Reflection of Light
- Regular Reflection and Diffuse Reflection of Light
- Objects and Images
- Images Formed by a Plane Mirrors
- The Position of Image Formed in a Plane Mirror
- Uses of Plane Mirrors
- Spherical Mirrors
- Image Formation by Spherical Mirrors
- Rules for Obtaining Images Formed by Concave Mirrors
- Formation of Different Types of Images by a Concave Mirror
- Representation of Images Formed by Spherical Mirrors Using Ray Diagrams
- Sign Convention for Reflection by Spherical Mirrors
- Mirror Formula and Magnification
- Rules for Obtaining Images Formed by Convex Mirrors
- Formation of Image by a Convex Mirror
- Refraction of Light
- Effects of Refraction of Light
- Laws of Refraction of Light
- Refraction through a Rectangular Glass Slab
- The Refractive Index
- Refraction by Spherical Lenses
- Rules for Obtaining Images Formed by Convex Lenses
- Formation of Different Types of Images by a Convex Lens
- Image Formation by Lenses
- Image Formation in Lenses Using Ray Diagrams
- Sign Convention for Reflection by Spherical Mirrors
- Lens Formula and Magnification
- Lens Formula and Magnification Formulae for a Concave Lens
- Power of a Lens
The Human Eye and the Colourful World
- Human Eye
- Working of the Eye
- Rods and Cones
- Power of Accommodation
- Range of Vision of a Normal Human Eye
- Advantages of Having Two Eyes for Vision
- Defects of Vision and Their Corrections > Myopia
- Defects of Vision and Their Corrections > Hypermetropia
- Defects of Vision and Their Corrections > Presbyopia
- Glass Prism
- Refraction of Light through a Prism
- Dispersion of Light Through a Prism
- The Rainbow
- Atmospheric Refraction
- Scattering of Light
Electricity
- Electric Charges
- Conductors and Insulators
- Electric Potential and Potential Difference
- Electric Current
- Electric Circuit
- Circuit Diagram
- Ohm's Law
- Resistance of a Conductor
- Graph Between V and I
- Experiment to Verify Ohm's Law
- Good Conductors, Resistors and Insulators
- Factors Affecting the Resistance of a Conductor
- Resistivity
- Resistance of a System of Resistors
- Resistors in Series
- Resistors in Parallel
- Domestic Electric Circuits
- Heating Effect of Electric Current
- Practical Applications of Heating Effect of Electric Current
- Electric Power
- Commercial Unit of Electrical Energy
- Effects Produced by Electric Current
- Applications of the Heating Effect of Current
Magnetic Effects of Electric Current
- Introduction to Magnets and Their Properties
- Electromagnetism
- Magnetic Field and Field Lines
- Magnetic Field of Earth
- Magnetic Effect of Current (or Electromagnetism)
- Magnetic Field Due to a Current-Carrying Conductor
- Magnetic Field due to a Current through a Straight Conductor
- Right-hand Thumb Rule
- Magnetic Field due to a Current through a Circular Loop
- Magnetic Field due to a Current in a Solenoid
- Electromagnet
- Magnetism in Human Beings
- Force on a Current-Carrying Conductor in a Magnetic Field
- Domestic Electric Circuits
Our Environment

Definition: Saliva
Definition: Salivary Amylase
Key Points: Nutrition in Human Beings

CBSE: Class 10

Definition: Saliva

A digestive fluid secreted by salivary glands that moistens food and contains the enzyme salivary amylase to break down starch is called saliva.

CBSE: Class 10

Definition: Salivary Amylase

An enzyme in saliva that breaks down starch (a complex carbohydrate) into simple sugars is called salivary amylase.

CBSE: Class 10

Key Points: Nutrition in Human Beings

In humans, nutrition takes place through the alimentary canal, a long tube from mouth to anus, where different parts help in digestion.
In the mouth, food is chewed and mixed with saliva which contains an enzyme (salivary amylase) that starts breaking down starch into sugar.
In the stomach, food is mixed with gastric juices (acid, pepsin, and mucus) that help digest proteins and kill germs.
In the small intestine, food is completely digested with the help of juices from the liver (bile) and pancreas (pancreatic enzymes), and nutrients are absorbed by villi into the blood.
The large intestine absorbs water from the remaining food, and the waste is removed from the body through the anus.