2.2.1 The Need for a Circulatory System

Cards (21)

  • Larger organisms require more oxygen due to their increased metabolic rate.
  • Larger organisms require more oxygen because of their higher energy demand.
  • Why do larger organisms require more oxygen than smaller organisms?
    Increased cell mass
  • In larger organisms, diffusion is challenged by increased distance
  • Arteries deliver oxygenated blood, while veins return deoxygenated blood
  • What is the role of blood in oxygen and nutrient transport?
    Carries oxygen and nutrients
  • Which type of circulatory system is more efficient at transporting oxygen, nutrients, and waste?
    Closed
  • Small organisms have a lower oxygen demand compared to larger organisms.

    True
  • Diffusion is sufficient for oxygen and nutrient transport in larger organisms.
    False
  • Blood carries oxygen and nutrients to cells, ensuring their efficient function.
  • Larger organisms have a higher metabolic rate
  • Larger organisms have a high surface area to volume ratio, which facilitates efficient diffusion.
    False
  • The circulatory system transports waste products such as carbon dioxide
  • What is the primary function of a circulatory system?
    Substance transport
  • What waste product is removed by the circulatory system?
    Carbon dioxide
  • What are the three main components of the circulatory system?
    Blood, vessels, heart
  • A higher metabolic rate in larger organisms leads to a greater oxygen demand.
    True
  • Larger organisms have a lower oxygen demand compared to smaller organisms.
    False
  • What two challenges does diffusion face in larger organisms?
    Increased distance, decreased surface area to volume ratio
  • The heart pumps blood to ensure constant circulation in the circulatory system.

    True
  • Order the components of the circulatory system involved in waste removal from their role in the process:
    1️⃣ Blood carries waste products like carbon dioxide away from cells
    2️⃣ Blood vessels deliver waste products to organs like the lungs
    3️⃣ The heart pumps blood to circulate waste products throughout the body