chapter 2 cells

Question 1

Function of Rough Endoplasmic Reticulum

Answer 1

transports proteins made by ribosomes to Golgi apparatus for secretion

Question 2

function of ribosomes on RER

Answer 2

synthesise proteins for secretion out of the cell

Question 3

function of smooth endoplasmic reticulum

Answer 3

synthesise fats
carries out detoxification in liver

Question 4

function of ribosomes lying freely in cell

Answer 4

synthesise protein for use in the cell

Question 5

how are SER and RER different

Answer 5

SER does not have ribosomes = does not synthesise proteins

Question 6

function of Golgi apparatus

Answer 6

1. chemically modify substances made by the endoplasmic reticulums
2. packages modified substances in vescicles for secretion of cell

Question 7

how do substances get secreted out of the cell?

Answer 7

1. small vesicles containing substances made by ERs pinched off ERs
2. vesicles fuse with GA = release their contents
3. GA modifies/repackages substances into secretory vesicles
4. secretory vesicles pinch off from GA = move to CSM
5. secretory vesicles fuse with CSM = release contents out of cell

Question 8

how are plant and animal cells different?

Answer 8

1. P cells have large central vacuole vs A cells have numerous small vacuoles
2. (typical) P cells have chloroplasts, none in A cells
3. centrioles present in A cells but not P cells
4. cell wall present in P cells but not A cells