2.6.3 Cellular organisation

• What is cellular organisation?

  Arrangement and structure of cells
• Match the level of cellular organisation with its description:

  Cell ↔️ Basic unit of life

  Tissue ↔️ Similar cells working together

  Organ ↔️ Two or more tissues

  Organ system ↔️ Group of organs
• A cell is the basic unit of life in cellular organisation.


  True
• The organism is composed of interconnected organ systems
• What is an organ in cellular organisation?

  Structure with two or more tissues
• A cell contains organelles and performs essential functions.


  True
• The levels of cellular organisation represent a hierarchy
• Connective tissue enables movement through contraction.

  False
• What is the function of the lungs in an organism?

  Facilitate gas exchange
• What is the basic unit of life?

  Cell
• What is an organ composed of?

  Two or more tissues
• Arrange the levels of cellular organization from simplest to most complex:

  1️⃣ Cell

  2️⃣ Tissue

  3️⃣ Organ

  4️⃣ Organ System

  5️⃣ Organism
• Epithelial tissue is composed of cells tightly packed in sheets
• Which type of tissue enables movement through contraction?

  Muscle
• What is the function of the heart?

  Pumps blood
• What is the function of the stomach?

  Digests and stores food
• What is the primary function of the circulatory system?

  Transports blood, oxygen, nutrients
• Which organ system breaks down and absorbs food?

  Digestive System
• Organ systems are composed of multiple organs working together.


  True
• Cellular organization allows different cell types to perform specialized functions
• What does the higher level of cellular organization permit in multicellular organisms?

  Complex structures and functions
• Cellular organisation ranges from simple to complex
• Arrange the levels of cellular organisation from simplest to most complex:

  1️⃣ Cell

  2️⃣ Tissue

  3️⃣ Organ

  4️⃣ Organ system

  5️⃣ Organism
• What is the highest level of cellular organisation?

  Organism
• A tissue is a group of dissimilar cells working together.

  False
• Arrange the levels of cellular organisation from simplest to most complex:

  1️⃣ Cell

  2️⃣ Tissue

  3️⃣ Organ

  4️⃣ Organ system

  5️⃣ Organism
• What is the function of a tissue in cellular organisation?

  Performs a specific function
• Match the tissue type with its function:

  Epithelial Tissue ↔️ Covers and protects surfaces

  Muscle Tissue ↔️ Enables movement

  Connective Tissue ↔️ Provides support and structure
• What does connective tissue provide in an organism?

  Support, structure, transportation
• Organs are composed of two or more different types of tissues
• Cellular organisation involves different levels of complexity.


  True
• Cellular organization involves different levels of complexity.


  True
• What is the function of epithelial tissue?

  Covers and protects surfaces
• Match the tissue type with its structure:

  Connective ↔️ Abundant extracellular matrix

  Muscle ↔️ Elongated cells

  Nervous ↔️ Specialized cells (neurons)
• The structure of each tissue type is adapted to its function.

  True
• The lungs facilitate the exchange of oxygen and carbon dioxide
• Organs are part of the hierarchical levels of cellular organization.


  True
• The respiratory system allows the body to take in oxygen and expel carbon dioxide
• What is the function of the nervous system?

  Coordinates body functions
• What is one benefit of cellular organization in multicellular organisms?

  Division of labor