AP Ch 3: Cell

Which of the following statements made by the nursing student reflect accurate understanding of the plasma membrane?

• "The plasma membrane is where ATP production occurs"

• "Protein synthesis occurs in the plasma membrane"

• "It regulates what enters/leaves the cell"

• "Plasma membranes play an important role in modifying and sorting out proteins"

Which cell organelle helps break down food to release energy?

• Mitochondria

• Nucleus

• Vacuole

• Endoplasmic Reticulum

The hereditary material in a cells is...

• Cytoplasm

• ATP

• DNA

• ER

Which of the following statements made by the nursing student reflects correct understanding of passive transport?

• "An example of passive transport is endocytosis"

• "ATP is required to drive passive transport"

• "Passive transport does not require ATP"

• "Na/K Pump is an example of passive transport"

What is facilitated diffusion?

• Transport that uses proteins to help move molecules across the membrane. 
• Movements of substances through a membrane. 
• When molecules spread from High to Low concentration on their own. 
• When pressure pushes something through a membrane. 

This process uses pressure to push substances through the cell membrane. 

• Filtration 
• Active Transport 
• Osmosis 
• Endocytosis 

Which of the following is the best describes osmosis?

• It involves a sodium/potassium pump to move a substance to move against its concentration gradient

• Water moving though the cell membrane

• Osmosis is mostly dependent on pressure to drive a substance to move down its concentration gradient

• An example of osmosis is photosynthesis

What is an isotonic solution?

• When solutions are in equilibrium 
• When the solution has more solute 
• When the solution has less solute 
• Has a greater pressure 

Molecules using simple diffusion move from 

• high to low concentrations 
• low to high concentrations 
• no concentrations  
• both concentrations  

Which of the following organelles modifies proteins that have already been synthesized?

• mitochondrion

• rough endoplasmic reticulum

• ribosome

• lysosome