What are the basic building blocks of all living organisms?

• Cells

• Atoms

• Molecules

• Tissues

Which of the following is a unicellular organism?

• Bacteria

• Human

• Dog

• Tree

What is the function of the cell membrane?

• Controls what enters and exits the cell

• Holds the cell's genetic material

• Produces energy

• Contains various organelles

Who first observed cells in a piece of cork?

• Robert Hooke

• Matthias Schleiden

• Theodor Schwann

• Louis Pasteur

Which organelle is responsible for producing energy in the cell?

• Mitochondria

• Nucleus

• Ribosome

• Golgi apparatus

What is the basic unit of structure and function in living things according to cell theory?

• Cell

• Tissue

• Organ

• Organism

According to cell theory, how do all cells arise?

• From pre-existing cells

• Spontaneously

• From non-living matter

• Through chemical reactions

MISA-Style Question:

Scientists have discovered that some new microscopic organisms contain a nucleus and specialized organelles, while others do not.

Based on the information in the article, analyze how the presence or absence of these structures affects how the organisms function and survive.

Use evidence from the article to support your explanation.

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Sentence Starters:

• One difference between organisms with and without a nucleus is that…

• According to the article, the nucleus is important because…

• This structure helps the cell by…

• Organisms without these organelles might…

• Therefore, the presence (or absence) of these structures shows that…