Cell Size AP Bio

Front

What happens to the surface area and volume of a cell as it increases in size?

Back

As a cell becomes larger, its volume increases faster than its surface area.

Front

What is the significance of the SA:V ratio in cells?

Back

A high surface area to volume (SA:V) ratio is important for optimizing exchange across the membrane.

Front

How do you calculate the surface area to volume (SA:V) ratio?

Back

SA:V ratio = Surface Area / Volume.

Front

Which cell would have a more efficient exchange through the plasma membrane: a larger cell or a smaller cell?

Back

A smaller cell would generally have a more efficient exchange due to a higher SA:V ratio.

Front

What is the SA:V ratio for a cell with a surface area of 12 and a volume of 10?

Back

SA:V ratio = 12 / 10 = 1.2.

Front

Why do cells need to maintain a high SA:V ratio?

Back

To facilitate efficient nutrient uptake and waste removal.

Front

What is the relationship between cell size and metabolic rate?

Back

As cell size increases, the metabolic rate may decrease due to lower SA:V ratio.

Front

What is one way cells can increase their surface area without increasing volume significantly?

Back

By developing folds or extensions, such as microvilli.

Front

What is the effect of a low SA:V ratio on a cell's function?

Back

A low SA:V ratio can hinder the cell's ability to efficiently exchange materials.

Front

What is an example of a cell type that has a high SA:V ratio?

Back

Red blood cells, which are biconcave in shape.