Cellular Organelles and Functions

The video tutorial by Mrs. Jones covers AP Biology topics, focusing on cell structure, organelles, and membrane transport. It provides a detailed explanation of the nucleus, ribosomes, mitochondria, and chloroplasts, along with their functions. The session also discusses different types of membrane transport, including diffusion, osmosis, and active transport. Additionally, the video offers resources for daily review and practice questions to help students prepare for the AP Biology exam.

What is the primary function of the nucleus in a cell?

• To synthesize proteins

• To store genetic material

• To detoxify harmful substances

• To produce energy

Which organelle is responsible for modifying and packaging proteins?

• Smooth ER

• Mitochondria

• Rough ER

• Golgi apparatus

What is the role of the mitochondria in cellular respiration?

• To transport proteins

• To generate ATP through oxidative phosphorylation

• To synthesize lipids

• To store calcium ions

Which of the following is true about simple diffusion?

• It allows small, non-polar molecules to pass through the membrane

• It moves substances against their concentration gradient

• It requires energy input

• It involves transport proteins

What distinguishes active transport from passive transport?

• Active transport involves only small molecules

• Active transport moves substances down their concentration gradient

• Active transport requires energy input

• Active transport does not use transport proteins

Which of the following is NOT a type of endocytosis?

• Phagocytosis

• Pinocytosis

• Exocytosis

• Receptor-mediated endocytosis

In osmosis, water moves from a region of _____ to a region of _____.

• low water potential; high water potential

• high water potential; low water potential

• low solute concentration; high solute concentration

• high solute concentration; low solute concentration

What happens to a plant cell in a hypertonic solution?

• It becomes turgid

• It undergoes plasmolysis

• It remains unchanged

• It bursts

Which cellular component is responsible for the synthesis of CFTR protein?

• Golgi apparatus

• Rough endoplasmic reticulum

• Smooth endoplasmic reticulum

• Lysosome

What is the role of the CFTR protein in cells?

• It acts as a receptor for hormones

• It facilitates the diffusion of chloride ions

• It synthesizes ATP

• It transports glucose across the membrane