bio final

Question 1

whats the difference between a larger SA:V ration than a smaller one?

Answer 1

larger SA:V ratio makes a more efficient cell than the smaller ratio

Question 2

what specific adaptation can cells have to increase their SA:V ratio?

Answer 2

fold membranes

Question 3

what do all cells have in common

Answer 3

they all come from the same major classes of organic molecules : Carbs, lipids, proteins, nucleic acids

Question 4

What are glycoproteins and what is their function?

Answer 4

glycoproteins are molecules that comprise protein and Carbohydrate chains that are involved in many functions including immunity/infections

Question 5

how are proteins made and transported, and ultimately secreted from the cell?

Answer 5

rough er –> into the cytoplasm of the cell

Question 6

what happens in mitosis?

Answer 6

eukaryotic cell nucleus splits into 2, followed by the division of the 2 parent cells into 2 daughter cells
- genetically indentical “daughter” cells from a single “parent” cell

Question 7

what happens in meiosis?

Answer 7

• produces haploid cells
• produces 4 genetically different daughter cells

Question 8

what causes genetic variations in populations? why is this important?

Answer 8

Genetic variations can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell gets ready to divide (known as genetic recombination). Genetic variations that alter gene activity or protein function can introduce different traits in an organism.