Stem Chapter 5 Cell Transport Quiz
Covers the plasma membrane, passive and active transport
Questions and Answers
- 1.
Give two differences between passive and active transport.
- 2.
What type of environment was the syrup egg (#2)? What happened to it? Why did this happen?
- 3.
Why are efficient cells so small?
- 4.
Materials entering the cell through a vacuole is liquid. Process is...
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
H. PinocytosisExplanation
Pinocytosis is a process in which the cell takes in fluid and dissolved solutes by forming small vesicles from the cell membrane. In this process, the cell engulfs the liquid material from the surrounding environment and brings it into the cell through the formation of vesicles. This is different from endocytosis, which involves the uptake of larger particles or molecules. Therefore, pinocytosis is the most appropriate process to explain the entry of liquid materials into the cell through a vacuole.Rate this question:
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- 5.
What is the name of part A on the diagram?
- A.
Cell wall
- B.
Phospholipid bilayer
- C.
Capsule
- D.
Cell surface marker
Correct Answer
B. Phospholipid bilayerExplanation
The correct answer is phospholipid bilayer. The phospholipid bilayer is a double layer of phospholipids that forms the main structure of the cell membrane. It is composed of hydrophilic heads that face outward towards the aqueous environment and hydrophobic tails that face inward, creating a barrier that controls the movement of substances in and out of the cell. The phospholipid bilayer is essential for maintaining the integrity and functionality of the cell.Rate this question:
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- 6.
If the cell was doing passive transport and using part B, what would the process be called?
- A.
Diffusion
- B.
Osmosis
- C.
Facilitated diffusion
- D.
Proton pump
Correct Answer
C. Facilitated diffusionExplanation
If the cell is using part B for passive transport, the process would be called facilitated diffusion. Facilitated diffusion is a type of passive transport where specific molecules or ions are transported across the cell membrane with the help of transport proteins. These proteins create channels or carriers that allow the molecules to pass through the membrane, following their concentration gradient. Unlike simple diffusion, facilitated diffusion requires the assistance of these proteins to enable the movement of molecules across the membrane.Rate this question:
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- 7.
What is G pointing to?
- A.
Polar heads
- B.
Nonpolar heads
- C.
Polar tails
- D.
Nonpolar tails
Correct Answer
A. Polar headsExplanation
G is pointing to the polar heads. The question is asking about the location or direction of G, and the correct answer states that G is pointing towards the polar heads. This suggests that G is indicating or referring to the polar heads of something, which could be a molecule, a diagram, or any other context that is not specified in the question.Rate this question:
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- 8.
Part I is pointing to the 4 fused carbon rings inside the plasma membrane. What are these molecules called?
- A.
Channel proteins
- B.
Nonpolar tails
- C.
Cholesterol
- D.
Glycoproteins
Correct Answer
C. CholesterolExplanation
Cholesterol is a molecule that is found in the plasma membrane of cells. It is composed of four fused carbon rings, which is what Part I is pointing to. Cholesterol helps maintain the fluidity and stability of the membrane, and also plays a role in cell signaling and the formation of certain hormones.Rate this question:
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- 9.
The burning of food causes smoke to fill the room. The process that is happening is called
- A.
Diffusion
- B.
Osmosis
- C.
Facilitated diffusion
- D.
Condensation
Correct Answer
A. DiffusionExplanation
Diffusion is the process in which particles move from an area of higher concentration to an area of lower concentration. In this case, when food is burned, smoke particles are released into the air. These smoke particles then spread out and fill the room through diffusion, as they move from an area of higher concentration (where the food is burned) to an area of lower concentration (the rest of the room).Rate this question:
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- 10.
White blood cells engulf bacteria cells in the immune system. Process is...
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
I. PhagocytosisExplanation
Phagocytosis is the process by which white blood cells engulf and ingest bacteria cells in the immune system. This process involves the formation of pseudopods, which surround and engulf the bacteria, forming a phagosome. The phagosome then fuses with lysosomes, forming a phagolysosome, where the bacteria are broken down and destroyed. Phagocytosis is an important defense mechanism of the immune system, allowing white blood cells to eliminate harmful bacteria and protect the body from infections.Rate this question:
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- 11.
Reverse of endocytosis. Process is...
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
J. ExocytosisExplanation
Exocytosis is the process by which cells release substances from their cytoplasm to the external environment. It involves the fusion of vesicles containing the substances with the cell membrane, leading to their release. This process is the reverse of endocytosis, which involves the uptake of substances into the cell. Exocytosis is important for various cellular functions such as the release of neurotransmitters, hormones, and digestive enzymes. It plays a crucial role in cell communication, signaling, and maintaining homeostasis.Rate this question:
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- 12.
Specific particles going through a protein channel with no energy needed. Process is...
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
C. Facilitated diffusionExplanation
Facilitated diffusion is the process where specific particles move through a protein channel without requiring energy. This process is different from active transport, where energy is needed to move particles against their concentration gradient. In facilitated diffusion, the particles move down their concentration gradient, from an area of high concentration to an area of low concentration, with the help of specific protein channels. This process is passive and does not require energy expenditure.Rate this question:
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- 13.
A cell is in a beaker of solution that has 75% solute in it. Inside the cell only has 15% solute. What type of environment is this cell in?
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
A. Hypertonic environmentExplanation
The cell is in a hypertonic environment because the concentration of solute outside the cell (75%) is higher than the concentration of solute inside the cell (15%). In a hypertonic environment, water will move out of the cell through osmosis, causing the cell to shrink.Rate this question:
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- 14.
Sodium and food go back into the cell. Process is....
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
E. Coupled channels -
- 15.
Sodium goes out and potassium goes in requiring one ATP. Process is...
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
F. Sodium potassium pumpExplanation
The correct answer is sodium potassium pump. The sodium potassium pump is a type of active transport that moves sodium ions out of the cell and potassium ions into the cell. This process requires the hydrolysis of ATP to provide the energy needed for the pump to work. It is essential for maintaining the concentration gradients of sodium and potassium across the cell membrane, which is important for various cellular functions such as nerve impulse transmission and muscle contraction.Rate this question:
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- 16.
Hydrogen ions get pumped into the mitochondria to create lots of energy. Process is...
- A.
Hypertonic environment
- B.
Hypotonic environment
- C.
Facilitated diffusion
- D.
Proton pump
- E.
Coupled channels
- F.
Sodium potassium pump
- G.
Endocytosis
- H.
Pinocytosis
- I.
Phagocytosis
- J.
Exocytosis
Correct Answer
D. Proton pumpExplanation
The correct answer is proton pump. A proton pump is a membrane protein that actively transports hydrogen ions (protons) across the mitochondrial membrane. This creates a concentration gradient of protons, which is used by the mitochondria to generate ATP, the energy currency of the cell. This process is essential for cellular respiration and the production of energy.Rate this question:
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Mar 15, 2023Quiz Edited by
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Oct 23, 2014Quiz Created by
Lisa Radjewski
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