Exploring Cell Biology and Transport

What is the basic unit of life in all living organisms?

• Tissue

• Organ

• Cell

• Molecule

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which organelle is responsible for producing energy in the form of ATP in eukaryotic cells?

• Nucleus

• Mitochondria

• Ribosome

• Golgi apparatus

Tags

NGSS.HS-LS1-7

Which of the following is a passive transport mechanism?

• Endocytosis

• Exocytosis

• Osmosis

• Active transport

Explain how the structure of the cell membrane contributes to its function in regulating the movement of substances into and out of the cell.

• The cell membrane is rigid and impermeable, preventing any movement.

• The cell membrane is composed of a single layer of lipids, allowing only lipids to pass through.

• The cell membrane is a fluid mosaic of lipids and proteins, allowing selective permeability.

• The cell membrane is a solid structure that allows all substances to pass freely.

Describe the role of homeostasis in maintaining the internal environment of an organism.

• Homeostasis allows organisms to change their internal environment to match the external environment.

• Homeostasis maintains a constant internal environment despite external changes.

• Homeostasis disrupts the internal environment to adapt to new conditions.

• Homeostasis only affects the temperature regulation in organisms.

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NGSS.HS-LS1-3

Compare and contrast the processes of diffusion and active transport in cells.

• Both diffusion and active transport require energy input from the cell.

• Diffusion moves substances from low to high concentration, while active transport moves them from high to low concentration.

• Diffusion is a passive process, while active transport requires energy.

• Both processes move substances against their concentration gradient.

Analyze how the malfunction of a specific organelle can affect the overall function of a cell. Consider the lysosome in your response.

• If lysosomes malfunction, the cell will produce excess energy.

• Malfunctioning lysosomes can lead to the accumulation of waste, disrupting cell function.

• Lysosome malfunction will enhance protein synthesis in the cell.

• A malfunctioning lysosome will have no effect on the cell.

Evaluate the importance of the phospholipid bilayer in maintaining cell integrity and function.

• The phospholipid bilayer is unimportant as it does not interact with the cell's environment.

• The phospholipid bilayer is crucial as it forms a barrier that regulates the entry and exit of substances.

• The phospholipid bilayer is only important for structural support.

• The phospholipid bilayer allows all substances to pass freely, maintaining cell integrity.

Predict the effect of a hypertonic solution on a plant cell and explain the reasoning behind your prediction.

• The plant cell will swell and burst due to water intake.

• The plant cell will remain unchanged as it is impermeable to water.

• The plant cell will become turgid due to water loss.

• The plant cell will shrink and become plasmolyzed due to water loss.

Directs all cell activities through the DNA located there.

• Lysosomes
• Nucleus
• ribosomes
• Mitochondria

Tags

NGSS.MS-LS1-2