AP Bio Insta-Review Topic 2.3: Cell Size

Which of the following cells is most efficient?

Note:  SA = surface area   V = volume

• SA: 4  V: 1

• SA: 3  V: 2

• SA: 2  V: 3

• SA: 1  V: 4

As surface area is squared, volume is…

• Halved

• Doubled

• Squared

• Cubed

What is the surface area of a sphere with a radius of 3?

• 4 pi

• 16 pi

• 36 pi

• 64 pi

What is the volume of a sphere with a radius of 3?

• (4/3) pi

• (32/3) pi

• (108/3) pi

• (256/3)pi

What is the surface area of a cube with a side length of 2?

• 6

• 24

• 54

• 96

What is the volume of a cube with a side length of 2?

A. 1

B. 8

C. 27

D. 64

• 1

• 8

• 27

• 64

Why is the inner membrane of the mitochondria highly folded?

• Increase volume of mitochondria

• Increase in surface area for oxidative phosphorylation

• Decrease volume of mitochondria

• Decrease in surface area for oxidative phosphorylation

Tags

NGSS.HS-LS1-7

Which cell is more efficient?

• Sphere

  SA: 36 pi 

  V: (108/3)pi 

• Cube

  SA: 24

  V: 8