Question

1. why do your muscle cells and nerve cells look different even though they have the same dna?
2. you fall off your bike and scrape your knee, damaging the skin tissue. explain how mitosis and differentiation work together to repair it.

lesson 1.3 - levels of organization
directions: for #15 - 19, match the level of organization with the correct description. write the letter on the line.

1. cell

a. group of cells that work together to perform a specific function

1. tissue

b. individual living thing made of interacting organ systems

1. organ

c. simplest level of organization that carries out all life processes

1. organ system

d. structure made of two or more types of tissues working together

1. organism

e. group of organs that work together to perform a major body function

1. arrange the following words in the table, matching them with their correct level of organization.

nerve tissue brain neuron nervous system human

1. you are making mac & cheese for dinner and accidentally touch the hot stove. describe how two organ systems work together to respond to this scenario.

Explanation:

• Cell: A neuron is the basic structural and functional unit of the nervous system, which is a single cell that can carry out life processes like transmitting electrical signals.
• Tissue: Nerve tissue is composed of neurons and supporting cells (neuroglia). It is a group of cells (neurons and glial cells) that work together to perform functions related to signal transmission and support in the nervous system.
• Organ: The brain is made up of multiple types of tissues (such as nerve tissue, connective tissue etc.). Different tissues in the brain work together to perform complex functions like processing information, regulating body functions etc.
• Organ System: The nervous system is a group of organs (like the brain, spinal cord, and nerves). These organs work together to perform major body functions such as sensing the environment (touching the hot stove - sensory input), processing information (brain deciding what to do), and sending out motor commands (telling the muscles to move the hand away).
• Organism: A human is an individual living thing. It is made up of all the interacting organ systems (nervous system, muscular system, etc.). In the context of the hot - stove scenario, the human (organism) has all the systems working together to respond to the stimulus.

Answer:

Cell	Tissue	Organ	Organ System	Organism