Biological Organization and Cell Specialization

A specialised cell is a cell that has ...

• the ability to divide/ replicate

• a specific function

• no specific function in the body

• the ability to differentiate/ specialise

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This type of tissue, shown in the picture, sends messages throughout the body, to and from the brain, in the form of electrical impulses.

• Nervous Tissue

• Epithelial Tissue

• Muscular Tissue

• Blood tissue

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Which of the following tissues is made up of cells that contract and relax to move substances through the body and help the body move? Cells have many mitochondria as they use lots of energy.

• Epithelial

• Nervous

• Muscle

• red blood cells

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Carries nutrients and oxygen around the body, no nucleus, lives for four months.

• Red Blood Cell
• White Blood Cell
• Leukocyte
• Xylem

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Flat, oval and thin cells that have large nuclei so they form many layers to protect you... 

• epithelial cell

• bone cell

• Muscle cell
• red blood cell

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CHALLENGE: In what way is the DNA of a nerve cell different from the DNA of a muscle cell?

• The DNA is the same but each cell contains different genes
• The DNA is the same but different genes are turned on and turned off in each cell
• The DNA is different, but the same genes are turned on and off in each cell
• The DNA is different, but each cell contains the same genes

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This is a example of ........

• cell
• tissue
• organ 
• organ system

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Different types of tissue working together form a(n) __________

• Cell
• Tissue
• Organ
• Organ System

Which series below shows the levels of organization for an organism from the least complex to the most complex?

• systems > cells > tissues > organs > organelles

• organelles > cells > tissues > organs > systems

• cells > tissues > organelles > organs > systems

• organelles > cells > organs > tissues > systems

What is the Basic unit of Life?

• atom

• organism

• molecule

• cell

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