Which of the following is NOT part of the cell theory?

• Cells are the smallest units of life

• All living things are composed of cells

• Cells can spontaneously generate under certain conditions

• Cells come only from pre-existing cells

Which organelle is responsible for ATP production through aerobic respiration?

• Nucleus

• Mitochondria

• Ribosome

• Golgi apparatus

Which of the following is NOT a function of the plasma membrane?

• Selective permeability

• Energy production

• Cell signaling

• Protection

What would happen to a cell placed in a hypertonic solution?

• It would swell

• It would shrink

• It would remain the same size

• It would burst

Which organelle is known as the "digestive system" of the cell, responsible for breaking down materials?

• Mitochondria

• Lysosome

• Peroxisome

• Golgi apparatus

Which structure controls what enters and exits the nucleus?

• Nuclear envelope

• Nuclear pores

• Nucleolus

• Chromatin

What is the main function of the cytoskeleton?

• Provides structural support and movement within the cell

• Synthesizes lipids and stores calcium

• Processes, packages, and ships proteins

• Produces ribosomal subunits

Which of the following is NOT a function of the Golgi apparatus?

• Processes proteins

• Packages proteins

• Ships proteins

• Produces ribosomal subunits

Which phase of the cell cycle comes immediately before DNA replication?

• G1 phase

• S phase

• G2 phase

• M phase

Which structure is directly involved in the movement of the cell?

• Cytoskeleton

• Golgi apparatus

• Nucleolus

• Smooth ER