Lecture 3

What is the basic unit of life?

• Cell

• Molecule

• Tissue

• Atom

Which type of microscope uses a stream of electrons to produce magnified images?

• Optical microscope

• Scanning electron microscope

• Compound light microscope

• Transmission electron microscope

What is the primary function of the plasma membrane?

• Protein synthesis

• Genetic information storage

• Energy production

• Selective permeability

What type of solution has a higher concentration of solute than the cells?

• Isotonic

• Equilibrium

• Hypotonic

• Hypertonic

Which organelle is known as the powerhouse of the cell?

• Nucleus

• Ribosome

• Golgi apparatus

• Mitochondria

What is the function of lysosomes?

• Protein synthesis

• Energy production

• Digestion of macromolecules

• Transport of substances

What is the role of the Golgi apparatus?

• Cell division

• Modification and packaging of proteins

• DNA replication

• Energy conversion

What type of transport requires cellular energy?

• Facilitated transport

• Diffusion

• Osmosis

• Active transport

What structure separates the nucleus from the cytoplasm?

• Endoplasmic reticulum

• Plasma membrane

• Golgi apparatus

• Nuclear envelope

What is the fluid-mosaic model associated with?

• Cytoplasmic structure

• Plasma membrane structure

• Cell wall structure

• Nuclear structure