Question

section vocabulary
function the special, normal, or proper activity on an organ or part
organ a collection of tissues that carry out a specialized function of the body
organ system a group of organs that work together to perform body functions
organism a living thing; anything that can carry out life processes independently
structure the arrangement of parts in an organism
tissue a group of similar cells that perform a common function

1. list what are three benefits of being multicellular?
2. contrast fill in the chart below to contrast the levels of organization in an organism.

level of organization description example
the smallest unit that can perform all life processes
heart muscle
a collection of tissues that carry out a specialized function
circulatory system
organ system

1. compare how are structure and function different?
2. explain what does “specialization of cells” mean?

Explanation:

1. Multicellular organisms can have cell - specialization, which allows different cells to perform different functions more efficiently. They can also grow to larger sizes as they are made up of multiple cells. Additionally, they have a greater level of complexity and can adapt to a wider range of environments.
2. The levels of organization in an organism from smallest to largest are: Cell (the smallest unit that can perform all life processes, e.g., a nerve cell), Tissue (a group of similar cells that perform a common function, e.g., heart muscle is cardiac tissue), Organ (a collection of tissues that carry out a specialized function, e.g., the heart), Organ system (a group of organs that work together to perform body functions, e.g., the circulatory system which includes the heart and blood vessels).
3. Structure refers to the physical form and arrangement of parts in an organism or a biological entity. Function is the special, normal, or proper activity that an organ or part can carry out. For example, the structure of the lungs is a pair of spongy organs with a large surface area due to alveoli, and their function is gas - exchange.
4. Specialization of cells means that cells in a multicellular organism develop in a way that they are adapted to perform specific functions. For example, red blood cells are specialized to carry oxygen, and muscle cells are specialized for contraction.

Answer:

1.

• Cell - specialization for more efficient function performance.
• Ability to grow to larger sizes.
• Greater complexity and adaptability to various environments.

2.

• Cell: the smallest unit that can perform all life processes, nerve cell
• Tissue: a group of similar cells that perform a common function, cardiac tissue
• Organ: a collection of tissues that carry out a specialized function, heart
• Organ system: a group of organs that work together to perform body functions, circulatory system (heart and blood vessels)

1. Structure is the physical form and arrangement of parts; function is the activity an organ or part can carry out. Example: lungs' structure is spongy with large surface - area alveoli, function is gas - exchange.
2. Cells in a multicellular organism develop to perform specific functions. Examples: red blood cells for oxygen - carrying, muscle cells for contraction.