Life Processes: Photosynthesis and Respiration
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Questions and Answers

What is the byproduct of photosynthesis that supports life on Earth?

  • Glucose and Oxygen (correct)
  • Energy and ATP
  • Chlorophyll and Starch
  • Water and Carbon dioxide

    • What is the process by which cells generate energy from glucose?

  • Nutrition
  • Respiration (correct)
  • Transportation
  • Photosynthesis

    • What type of nutrition involves self-nutrition, such as photosynthesis?

  • Saprotrophic
  • Heterotrophic
  • Holozoic
  • Autotrophic (correct)

    • What is the function of xylem and phloem in plants?

    <p>Transportation of materials</p> Signup and view all the answers

    What is the importance of excretion in an organism?

    <p>To maintain homeostasis and prevent toxin buildup</p> Signup and view all the answers

    What is the term for the movement of materials within an organism?

    <p>Transportation</p> Signup and view all the answers

    Which of the following is a factor that affects the process of photosynthesis?

    <p>Light intensity</p> Signup and view all the answers

    What is the primary function of aerobic respiration in cells?

    <p>To generate energy in the form of ATP</p> Signup and view all the answers

    Which type of nutrition involves obtaining energy by breaking down organic matter?

    <p>Heterotrophic nutrition</p> Signup and view all the answers

    What is the primary function of active transport in cells?

    <p>To move molecules against their concentration gradient</p> Signup and view all the answers

    Which of the following is NOT a function of the excretory system?

    <p>Producing hormones</p> Signup and view all the answers

    What is the term for the movement of water and minerals from the roots to the leaves of a plant?

    <p>Transpiration</p> Signup and view all the answers

    Study Notes

    Life Processes

    Photosynthesis

    • Definition: Process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose
    • Equation: 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
    • Importance: Produces oxygen and glucose, supporting life on Earth
    • Factors affecting photosynthesis:
      • Light intensity
      • Temperature
      • Water availability
      • CO2 concentration

    Respiration

    • Definition: Process by which cells generate energy from glucose, releasing CO2 and H2O as byproducts
    • Equation: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + energy (ATP)
    • Types of respiration:
      • Aerobic respiration (in presence of oxygen)
      • Anaerobic respiration (in absence of oxygen)
    • Importance: Essential for energy production in cells

    Nutrition

    • Definition: Process by which organisms obtain and utilize nutrients for energy, growth, and maintenance
    • Modes of nutrition:
      • Autotrophic (self-nutrition, e.g., photosynthesis)
      • Heterotrophic (other-feeding, e.g., animals, fungi)
      • Saprotrophic (decaying organic matter, e.g., fungi, bacteria)
    • Nutrient uptake:
      • Absorption (plants)
      • Ingestion (animals)
      • Active transport (cells)

    Transportation

    • Definition: Movement of materials within an organism, including nutrients, oxygen, and waste products
    • Types of transportation:
      • Blood circulation (animals)
      • Xylem and phloem transport (plants)
      • Diffusion and active transport (cells)
    • Importance: Essential for maintaining homeostasis and supporting metabolic processes

    Excretion

    • Definition: Removal of waste products from an organism
    • Types of excretion:
      • Urine excretion (kidneys, animals)
      • Transpiration (plants)
      • Diffusion and active transport (cells)
    • Importance: Maintains internal environment, prevents toxin buildup, and supports overall health

    Photosynthesis

    • Converts light energy from the sun into chemical energy in the form of glucose
    • Equation: 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
    • Produces oxygen and glucose, supporting life on Earth
    • Affected by light intensity, temperature, water availability, and CO2 concentration

    Respiration

    • Generates energy from glucose, releasing CO2 and H2O as byproducts
    • Equation: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + energy (ATP)
    • Types: aerobic respiration (in presence of oxygen) and anaerobic respiration (in absence of oxygen)
    • Essential for energy production in cells

    Nutrition

    • Obtaining and utilizing nutrients for energy, growth, and maintenance
    • Modes: autotrophic (self-nutrition, e.g., photosynthesis), heterotrophic (other-feeding, e.g., animals, fungi), and saprotrophic (decaying organic matter, e.g., fungi, bacteria)
    • Nutrient uptake: absorption (plants), ingestion (animals), and active transport (cells)

    Transportation

    • Movement of materials within an organism, including nutrients, oxygen, and waste products
    • Types: blood circulation (animals), xylem and phloem transport (plants), and diffusion and active transport (cells)
    • Essential for maintaining homeostasis and supporting metabolic processes

    Excretion

    • Removal of waste products from an organism
    • Types: urine excretion (kidneys, animals), transpiration (plants), and diffusion and active transport (cells)
    • Maintains internal environment, prevents toxin buildup, and supports overall health

    Photosynthesis

    • Converts light energy from the sun into chemical energy in the form of organic compounds (glucose)
    • Equation: 6CO2 + 6H2O + light energy → C6H12O6 (glucose) + 6O2
    • Produces oxygen and glucose for energy
    • Supports life on Earth

    Factors Affecting Photosynthesis

    • Light intensity
    • Temperature
    • Water availability
    • Carbon dioxide concentration

    Respiration

    • Converts glucose into energy (ATP) in the form of cellular respiration
    • Types: Aerobic respiration (oxygen present) and Anaerobic respiration (oxygen absent)
    • Equation: C6H12O6 (glucose) + 6O2 → 6CO2 + 6H2O + ATP (energy)
    • Releases energy for cellular activities
    • Supports life processes

    Nutrition

    • Obtains and utilizes nutrients for energy, growth, and maintenance
    • Modes of nutrition: Autotrophic (self-nutrition, e.g., photosynthesis) and Heterotrophic (other-feeding, e.g., animals, fungi)
    • Nutrient types: Macronutrients (carbohydrates, proteins, fats) and Micronutrients (vitamins, minerals)

    Transportation

    • Movement of materials within an organism
    • Types: Passive transport (diffusion, osmosis) and Active transport (carrier proteins, pumps)
    • Maintains homeostasis
    • Supports cellular activities

    Excretion

    • Removal of waste products from the body
    • Types: Kidney function (urine production), Liver function (bile production), and Skin function (sweat)
    • Maintains homeostasis
    • Prevents toxicity

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    Description

    Explore the processes of photosynthesis and respiration, including their definitions, equations, importance, and factors affecting them.

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