Week 2: THE CELL

Question 1

Polysaccharide chains cross-linked by proteins; coated with
lipopolysaccharide;

extensions of the cell wall

Answer 1

Cell wall, pili and flagella

Question 2

Bilayer of 40% lipid, 60% protein, carbohydrates

Answer 2

Cell membrane, mesosome

Question 3

Contains chromatin, a complex of chromosomal DNA and
histone proteins

Answer 3

Nucleoid region

Question 4

Complexes of RNA (65%) and proteins (35%)

Answer 4

Ribosomes

Question 5

Nutrients stored in small molecules or polymers

Answer 5

Vacuoles

Question 6

Small molecules, soluble proteins, enzymes, nutrients,
inorganic salts; dissolved in aqueous solution

Answer 6

Cytoplasm

Question 7

Bilayer of proteins (50%) and lipids (50%) and some
carbohydrates

Answer 7

Cell membrane

Question 8

Contains genomic DNA and histone proteins which form chromatin; RNA

Answer 8

Nucleus

Question 9

Flat, single membrane vesicles of lipids and proteins;
ribosomes consist of RNA and proteins

Answer 9

Endoplasmic reticulum with
ribosomes

Question 10

Flattened vesicles of lipids, proteins and polysaccharides

Answer 10

Golgi apparatus

Question 10

Double-membrane with proteins and lipids; interior (matrix)
contains soluble and insoluble enzymes, RNA and DNA

Answer 10

Mitochondria

Question 11

Single-membrane vesicles containing enzymes for hydrolysis

Answer 11

Lysosomes (animals)

Question 12

Single-membrane vesicles containing catalase and other
oxidative enzymes

Answer 12

Peroxisomes (animals)

Question 13

Double-membrane organelles containing protein, lipid,
chlorophyll, RNA, DNA and ribosomes

Answer 13

Chloroplasts (plant)

Question 14

Cytoskeleton made of proteins; small molecules, soluble
proteins, enzymes, nutrients and salts in aqueous solution

Answer 14

Cytoplasm