Active Cellular Transport Lesson

Multiple Choice

Which of the following types of cells have a cell membrane?

• Only prokaryotic cells

• Only eukaryotic cells

• Both prokaryotic and eukaryotic cells

• Neither prokaryotic nor eukaryotic cells

Labeling

Label the following parts on the cell diagram:

• Mitochondria

• Lipid layer

• Protein channel

Drag labels to their correct position on the image

Mitochondria

Lipid layer

Protein channel

Multiple Choice

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

• Photosynthesis

• Protein synthesis
  

• Energy production (ATP)

• DNA replication

Multiple Choice

Which biomolecule is primarily responsible for long-term energy storage, and which is mainly involved in structural support and enzyme activity?

• Lipids store energy, proteins provide structural support and enzyme activity

• Proteins store energy, lipids provide structural support

• Lipids and proteins both store energy equally

• Proteins store energy, while lipids provide enzyme activity

Multiple Choice

Which of the following best describes how heart rate contributes to homeostasis during exercise?

• Heart rate decreases to maintain a stable body temperature.

• Heart rate increases to remove waste from the body.

• Heart rate remains unchanged, ensuring energy efficiency.

• Heart rate increases to maintain oxygen and nutrient balance in active muscles.

Multiple Choice

What is the role of ATP in active transport?

• It provides energy for molecules to move passively across the membrane

• It is not required for active transport

• It provides the energy needed to move molecules against their concentration gradient

• It is used to break down molecules during transport

Multiple Choice

In which direction do molecules move during active transport?

• From low to high concentration

• From high to low concentration

• In both directions without using energy

• Only along the concentration gradient

​Protein pump/channel

​ ATP

Multiple Choice

What is the primary function of carrier proteins in cellular transport?

• To create pores for passive movement of molecules

• To bind and transport specific molecules across the membrane

• To store energy for the cell

• To facilitate the movement of water through the membrane

Multiple Choice

What is the main difference between protein pumps and carrier proteins?

• Protein pumps use ATP to move molecules against the concentration gradient, while carrier proteins do not always require energy.

• Carrier proteins transport only large molecules, while protein pumps only transport small ions.

• Protein pumps change the shape of the entire membrane, while carrier proteins do not.

• Carrier proteins only move molecules through osmosis, while protein pumps move molecules through diffusion.

Multiple Choice

Which of the following best describes the difference between endocytosis and exocytosis?

• Endocytosis releases waste from the cell, while exocytosis absorbs nutrients.

• Endocytosis brings materials into the cell, while exocytosis removes materials from the cell.

• Endocytosis only occurs in plant cells, while exocytosis only occurs in animal cells.

• Both endocytosis and exocytosis involve passive transport of molecules.