Cell: The Unit of Life

Question 1

Fluid mosaic model was proposed by? Which year?

Answer 1

Singer and Nicolson, 1972

Question 2

Sizes of mycoplasma, bacteria, RBC?

Answer 2

0.3 um, 3-5 um, 7um

Question 3

Sizes of PPLO, virus, typical eukaryote?

Answer 3

0.1um, 0.02-0.2 um, 10-20 um

Question 4

Protein to lipid ratio of RBC cell membrane?

Answer 4

52:40

Question 5

Size of prokaryotic ribosome?

Answer 5

15-20nm (associated with plasma membrane)

Question 6

Components of algal cell wall

Answer 6

Cellulose, galactans, mannans, and calcium carbonate

Question 7

Components of plant cell wall

Answer 7

Cellulose, hemicellulose, pectins and proteins

Question 8

Organelles of the endomembrane system?

Answer 8

ER, golgi complex, lysosomes and vacuoles

Question 9

Dictyosome discovered by? What year?

Answer 9

Camillo golgi, 1898

Question 10

Size of cisternae?

Answer 10

0.5-1um

Question 11

Site of formation of glycolipids and glycoproteins

Answer 11

Golgi body

Question 12

Vacuoles contain?

Answer 12

Water, sap, excretory products

Question 13

Vacuoles occupy what percentage of plant cell?

Answer 13

90

Question 14

Length and diameter of mitochondria?

Answer 14

1-4.1um, 0.2-1um

Question 15

Chloroplast length and width?

Answer 15

5-10um, 2-4um

Question 16

Chloroplast in chlamydonomonas? In mesophyll?

Answer 16

1, 20-40

Question 17

When was ribosome discovered? By who?

Answer 17

1953, George Palade

Question 18

Svedberg unit measures?

Answer 18

density and size indirectly

Question 19

Centrosome is made of?

Answer 19

tubulin

Question 20

Nucleus discovered by? What year? Chromatin named by?

Answer 20

Robert Brown, 1831, Flemming

Question 21

Space between nuclear membrane? What is nucleolus?

Answer 21

10-50nm, site for active rRNA synthesis