Unit 1

Question 1

what is the relationship between volume, surface area to volume ratio and diffusion rate?

Answer 1

As cell size (volume) increases, the surface area to volume ratio decreases, so diffusion rate decreases

Question 2

What is magnification and how do you calculate it?

Answer 2

Magnification is how much larger an object appears compared to its actual size. Ratio of image size and actual size of object

Question 3

List 2 similarities of prokaryotic cells and eukaryotic cells

Answer 3

Both have cell membrane, cytoplasm and cytoskeleton

Question 4

List 3 differences of prokaryotic cells and eukaryotic cells

Answer 4

• Only unicellular (prokaryotic cell), unicellular or multicellular (eukaryotic cell)
• No nuclear envelope (prokaryotic cell), nuclear envelope that surrounds genetic information (eukaryotic cell)
• asexual reproduction only (prokaryotic cell) asexual & sexual reproduction)