Cellular Differentiation and Transport Quiz

What is a stem cell?

• An unspecialized cell that divides without limit

• A fully specialized cell

• A cell that can only become one of a few types

• A cell that can develop into any type of cell

What are checkpoints in the cell cycle?

• Points where the cycle can be signaled to move forward or stopped

• Proteins that control the cell cycle

• Stages of cell differentiation

• Types of cancer cells

What is the difference between benign and malignant tumors?

• Benign tumors do not pose a threat, malignant tumors do

• Benign tumors are cancerous, malignant tumors are not

• Benign tumors can spread, malignant tumors cannot

• There is no difference

What is passive transport?

• Movement of substances without energy

• Movement of substances using energy

• Movement of substances against concentration gradient

• Movement of substances through vesicles

What is osmosis?

• Diffusion of water through a semipermeable membrane

• Movement of solutes across a membrane

• Active transport of ions

• Endocytosis process

What is facilitated diffusion?

• Diffusion process for substances that cannot cross the lipid bilayer

• Active transport of glucose

• Endocytosis of large molecules

• Osmosis of water

What is the role of Na+/K+ ATPase?

• Transports sodium out and potassium into the cell

• Facilitates glucose transport

• Involved in passive transport

• Controls cell cycle checkpoints

What is the function of ribosomes in a cell?

• Cell division

• DNA replication

• Energy production

• Protein synthesis

What is apoptosis?

• Programmed cell death

• Cell division process

• Immune response mechanism

• Cellular repair process

What is the role of chloroplasts in plant cells?

• Cell respiration

• DNA storage

• Photosynthesis

• Protein synthesis