2.3 Cell Size

• What happens to the volume of an object as its size increases compared to its surface area?

  Volume increases faster
• The surface area to volume ratio is not important in biological systems.

  False
• Smaller objects have a higher surface area to volume ratio compared to larger objects.
• Steps in the efficient functioning of smaller cells due to their high surface area to volume ratio:

  1️⃣ Absorb nutrients

  2️⃣ Exchange gases like oxygen and carbon dioxide

  3️⃣ Dissipate metabolic heat

  4️⃣ Eliminate waste products
• Why are most cells in multicellular organisms relatively small?

  High surface area to volume ratio
• Match the cell size with its nutrient exchange efficiency:

  Smaller ↔️ More efficient

  Larger ↔️ Less efficient
• Larger cells with a lower surface area to volume ratio are more adaptable to environmental changes.

  False
• Larger cells may require internal transport mechanisms to compensate for their lower surface area to volume ratio.
• Smaller cells have a higher surface area to volume ratio
• What is the primary advantage of a high surface area to volume ratio in smaller cells?

  Efficient nutrient absorption
• Larger cells are more efficient at nutrient exchange compared to smaller cells.

  False
• Larger cells with a lower surface area to volume ratio may require specialized internal transport
• Match the cell size with its corresponding benefit:

  Smaller ↔️ Efficient gas exchange

  Larger ↔️ Sustained larger metabolic processes
• Optimizing surface area to volume ratio ensures efficient exchange processes and metabolic activities.


  True
• Smaller objects have a higher surface area to volume ratio compared to larger objects.
• How does a cell's volume change relative to its surface area as its size increases?

  Volume increases more rapidly
• The surface area to volume ratio affects nutrient exchange in cells.

  True
• Why is it more challenging for larger cells to obtain sufficient nutrients and expel waste compared to smaller cells?

  Lower surface area to volume ratio
• Larger cells have a lower surface area to volume ratio, making it more challenging to meet their metabolic needs.
• Most cells in multicellular organisms are small to maintain a high surface area to volume ratio.
• Smaller cells with a higher surface area to volume ratio exchange nutrients more efficiently than larger cells.

  True
• The surface area to volume ratio is significant for cell survival because it impacts the exchange of nutrients, gases, and waste.
• Steps in the efficient functioning of smaller cells due to their high surface area to volume ratio:

  1️⃣ Efficient nutrient absorption

  2️⃣ Gas exchange

  3️⃣ Effective dissipation of metabolic heat

  4️⃣ Waste removal
• Larger cells can sustain greater overall metabolic processes despite their lower surface area to volume ratio.


  True
• Smaller cells have a lower surface area to volume ratio than larger cells.

  False
• As a cell's size increases, its volume increases at a faster rate than its surface area
• What are two functions facilitated by a high surface area to volume ratio in smaller cells?

  Nutrient absorption and gas exchange
• The surface area to volume ratio is a critical factor for cell survival.


  True
• Larger cells with a lower surface area to volume ratio may use specialized internal transport mechanisms