Variety of life

• What are the 8 processes of living organisms?

  Movement, Respiration, Sensitivity, Homeostasis, Growth, Reproduction, Excretion, Nutrition
• What is the role of homeostasis in living organisms?

  Maintains constant conditions for enzymes and cells
• What is excretion?

  The removal of toxic metabolic waste
• What is the mode of feeding for animals?

  Eating, heterotrophic
• Give an example of animals.

  Mammals (humans), insects (housefly)
• What are other characteristics of animals?

  Have nervous coordination and can move
• What is the cell wall of plants made of?

  Cellulose
• What is the mode of feeding for plants?

  Photosynthesis, autotrophic
• Give examples of plants.

  Flowering plants (e.g. maize), herbaceous legumes (peas)
• What are other characteristics of plants?

  Store carbohydrates as starch or sucrose
• What is the cell wall of fungi made of?

  Chitin
• What is the mode of feeding for fungi?

  Extracellular secretion of enzymes then absorption, saprotrophic
• Give examples of fungi.

  Mucor (typical hyphae), yeast (single-celled)
• What are other characteristics of fungi?

  Store carbohydrates as glycogen, organized into mycelium
• What is the cell wall of bacteria made of?

  Peptidoglycan
• What is the mode of feeding for bacteria?

  Can photosynthesize but mainly feed off others
• Give examples of bacteria.

  Lactobacillus bulgaricus, pneumococcus
• What are other characteristics of bacteria?

  Unicellular, have DNA chromosome instead of nucleus
• What are the 8 processes of living organisms?

  Movement, Respiration, Sensitivity, Homeostasis, Growth, Reproduction, Excretion, Nutrition
• What is the purpose of homeostasis in living organisms?

  It maintains constant conditions for enzymes and cells
• What is the purpose of excretion in living organisms?

  The removal of toxic metabolic waste
• What is the mode of feeding for animals?

  Eating, heterotrophic
• What are two examples of animals?

  Mammals (humans), insects (housefly)
• What other characteristics do animals have?

  They have nervous coordination and can move from one place to another. They store carbohydrate as glycogen.
• What is the cell wall of plants made of?

  Cellulose
• What is the mode of feeding for plants?

  Photosynthesis, autotrophic
• What are two examples of plants?

  Flowering plants (e.g. cereal - maize), herbaceous legumes (peas or beans)
• What other characteristics do plants have?

  They store carbohydrates as starch or sucrose
• What is the cell wall of fungi made of?

  Chitin
• What is the mode of feeding for fungi?

  Extracellular secretion of enzymes then absorption, saprotrophic
• What are two examples of fungi?

  Mucor (typical hyphae structure), yeast (single-celled)
• What other characteristics do fungi have?

  They store carbs as glycogen, and their body is organised into a mycelium made of hyphae (thread-like structures)
• What is the cell wall of bacteria made of?

  Peptidoglycan
• What is the mode of feeding for bacteria?

  Can photosynthesise but mainly feed off other organisms
• What are two examples of bacteria?

  Lactobacillus bulgaricus (rod-shaped, used in creating yoghurt), Pneomococcus (spherical, acts as a pathogen causing pneumonia)
• What other characteristics do bacteria have?

  They are unicellular and have a DNA chromosome instead of a nucleus
• What are the modes of feeding for protoctista?

  Photosynthesis if like plants, eating if like animals, absorption if like fungi
• What are two examples of protoctista?

  Amoeba (animal), Chlorella (plant), Plasmodium (pathogenic that causes malaria)
• What is the mode of feeding for viruses?

  Rely on materials from infected cell they are in
• What are two examples of viruses?

  Tobacco mosaic virus (discolours leaves by preventing chloroplast formation), Influenza, HIV (causes AIDS)