B1 - Cell Biology

Question 1

What is the role of the cell membrane?

Answer 1

controls the molecules that can enter & leave the cell

Question 2

What is the role of the cytoplasm?

Answer 2

a jelly-like substance where chemical reactions take place

Question 3

What is the role of the mitochondria?

Answer 3

where aerobic respiration takes place

Question 4

What is the role of the nucleus?

Answer 4

contains DNA & controls the cell

Question 5

What is the role of the ribosome?

Answer 5

site of protein synthesis

Question 6

What is the role of the cell wall?

Answer 6

strengthens the cell with cellulose

Question 7

What is the role of the chloroplast?

Answer 7

contains chlorophyll & site of photosynthesis

Question 8

What is the role of the vacuole?

Answer 8

filled with cell sap & water, it gives the cell its shape

Question 9

What sub-cellular structures are in an animal cell?

Answer 9

cell membrane, mitochondria, nucleus, ribosomes & cytoplasm

Question 10

What sub-cellular structures are in a plant cell?

Answer 10

cell membrane, mitochondria, nucleus, ribosomes, cytoplasm, cell wall, vacuole & chloroplasts

Question 11

What do eukaryotic cells have that prokaryotic cells don’t?

Answer 11

don’t contain their DNA in a nucleus

Question 12

What size are prokaryotic cells compared to eukaryotic cells?

Answer 12

prokaryotic: 0.1 - 5.0 um (diameter)
eukaryotic: 10 - 100 um (diameter)

Question 13

What do prokaryotic cells have that eukaryotic cells don’t?

Answer 13

extra rings of DNA= plasmids