Exploring Cell Structure and Function

What is the fundamental unit of structure, function, and organisation in all living organisms according to cell theory?

• Molecules

• Cells

• Tissues

• Organs

Who was the English scientist that first used a light microscope to observe cells in 1655?

• Anton van Leeuwenhoek

• Robert Hooke

• Matthias Schleiden

• Theodor Schwann

What did Robert Hooke observe when he looked at finely sliced cork under a microscope?

• Nuclei

• Mitochondria

• Cells

• Chloroplasts

According to cell theory, how do new cells develop?

• From non-living matter

• From existing cells

• Spontaneously

• From chemical reactions

Which of the following is NOT a component of cell theory?

• All living organisms are composed of cells

• Cells are the basic unit of life

• Cells can arise spontaneously

• Cells can only develop from existing cells

What advancement allowed cells to be observed in detail for the first time?

• Development of the electron microscope

• Development of the light microscope

• Discovery of DNA

• Invention of the telescope

Which of the following is a function of the cell membrane?

• Energy production

• Protein synthesis

• Regulating the movement of substances in and out of the cell

• Photosynthesis

What is the primary function of mitochondria in the cell?

• Photosynthesis

• Protein synthesis

• Energy production

• Cell division

Which organelle is responsible for photosynthesis in plant cells?

• Mitochondria

• Ribosomes

• Chloroplasts

• Nucleus

What is the main difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus

• Eukaryotic cells lack organelles

• Prokaryotic cells lack a nucleus

• Eukaryotic cells are always unicellular