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Science / Life Processes in Animals

Science / Life Processes in Animals

Living beings can be distinguished from non living things due to their organised structure and life processes. Revise life processes such as nutrition, respiration, transportation, excretion in plants and animals. This module focuses on:

  • Digestive system: role of digestive enzymes in digestion of food

Respiratory system: types of respiration :

  • Aerobic respiration - occurs in presence of oxygen and by-products are carbon di oxide, water and energy
  • Anaerobic respiration - occurs in absence of oxygen and by-products are ethanol, carbon di oxide

Transportation of food and nutrients: Living organisms need a transport system to transport food, gases, mineral salts, hormones which is required for normal functioning. Transportation of substances is done by the circulatory system comprising of blood, blood vessels(arteries, veins and capillaries) and heart.

The movement of the blood from the heart to all parts of the body and back to the heart is called circulation of blood. During this blood flows to arteries with pressure called blood pressure. It is measured with an instrument called sphygmomanometer

The normal blood pressure is \frac{120}{80} mm of mercury. The Lymphatic system - balances between tissue fluid and blood and prevents infection.

In plants transportation of water and food take place by xylem(water) and phloem(food) through diffusion (movement of gas or liquid from higher concentration region to lower concentration region) and osmosis (movement of water molecules from a weaker solution to a stronger solution through a semipermeable membrane).

Excretory system - The functions of nephron are purification of blood and urine formation.

Parts of nephron - malpighian corpuscle, the proximal convoluted tuble, hele's loop and distal convoluted tuble. Osmoregulation is the technique involved in urine formation. Understand Dialysis which is used in case of kidney failure and acts as artificial kidney

You can read more about Excretory system at http://www.nlm.nih.gov/medlineplus/kidneysandurinarysystem.html

  • Nutrition - SmartTest

    A SmartTest on Nutrition

    • Accessed by: 236 Students
    • Average Time: 00:02:21
    • Average Score: 35.54
    • Questions: 18

    Digestive System - SmartTest

    A SmartTest on Digestive System

    • Accessed by: 246 Students
    • Average Time: 00:02:28
    • Average Score: 30.08
    • Questions: 29

    Circulatory System - SmartTest

    A SmartTest on Circulatory System

    • Questions: 32

    Respiration in Humans - SmartTest

    A SmartTest on Resipration in Humans

    • Questions: 10

    Excretory System in Humans - SmartTest

    A SmartTest on Excretory System in Humans

    • Questions: 10
    • Respiration in different organisms
    • Transportation in Animals
    • Excretion in Animals
    • Review of Life Processes
    • Digestive System in Humans
    • Circulatory System
    • Nutrition in Animals - Heterotrophic nutrition and it types
    • Nutrition in Amoeba, Ruminants
    • Digestion in mouth
    • Digestion in pharynx, oesophagus
    • Role of stomach in digestion
    • Role of small intestine in digestion
    • Role of large intestine in alimentary canal
    • Assimilation and Egestion
    • Types of Respiration
    • Human respiratory system
    • Mechanism of breathing
    • Transport of Gases
    • Blood and its components
    • Blood vessels - Arteries, Veins and Capillaries
    • Human Heart -Structure
    • Circulation of Blood
    • The Lymphatic System
    • Excretion in Human Beings - Kidneys
    • Internal structure of Kidney, Structure of nephron
    • Functions of Nephron
    • Kidney Failure and Haemodialysis




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