Lecture 12 recap

What is the basic unit of structure and organization in organisms?

• Atom

• Molecule

• Cell

• Tissue

Which hypothesis suggests that life started from simple chemical compounds?

• Genetic mutation theory

• Cell theory

• Chemical evolution hypothesis

• Biological evolution theory

What type of cells lack a membrane-bound nucleus?

• Eukaryotic cells

• Prokaryotic cells

• Animal cells

• Plant cells

Which of the following is a characteristic of eukaryotic cells?

• Small size (0.2-2.0μm)

• Membrane-bound nucleus

• No organelles

• Circular DNA

What structure is responsible for ribosome synthesis in eukaryotic cells?

• Nucleus

• Mitochondria

• Endoplasmic reticulum

• Golgi body

Which organelle is involved in ATP synthesis?

• Chloroplast

• Nucleus

• Golgi body

• Mitochondria

What is the primary function of the rough endoplasmic reticulum?

• Protein synthesis

• DNA replication

• Lipid synthesis

• Energy production

Which of the following is NOT a feature of plant cells?

• Rigid cell wall

• Centrosome

• Chloroplasts

• Large central vacuole

What type of molecules can easily pass through the lipid bilayer of a cell membrane?

• Nucleic acids

• Proteins

• Small non-polar molecules

• Large charged molecules

What is the role of membrane proteins?

• DNA replication

• Cell division

• Transport and communication

• Energy storage