mid ch3

Question 1

attached at one or both ends of the cell

Answer 1

flagella

Question 2

• single flagellum

Answer 2

Monotrichous

Question 3

• small bunches or tufts of
  flagella emerging from the same site

Answer 3

Lophotrichous

Question 4

dispersed randomly over the structure of the cell

Answer 4

Peritrichous

Question 5

Axial Filaments Found in

Answer 5

Spirochetes

Question 6

Found on gram- negative bacteria

Answer 6

pili

Question 7

Used for attachment
and genetic exchange

Answer 7

pili

Question 8

Used for attachment and sometimes motility

Answer 8

Fimbriae

Question 9

Tend to stick to each other and to surfaces

Answer 9

Fimbriae

Question 10

• a loose shield that protects some bacteria from
  loss of water and nutrients

Answer 10

Slime layer

Question 11

• when the glycocalyx is bound more tightly to the
  cell and is denser and thicker

Answer 11

Capsule

Question 12

• important for pathogenesis,prevent phagocytosis

Answer 12

Capsule

Question 13

Target of many antibiotics-

Answer 13

disrupt the cell wall, and cells have little protection from lysis

Question 14

Some don’t have a cell wall at all For example,

Answer 14

Mycobacterium

Question 15

• lack cell wall entirely

Answer 15

Mycoplasmas

Question 16

Important medical species of Mycoplasma

Answer 16

pneumonia

Question 17

Mycobacteria Contain

Answer 17

mycolic acid (a wax)

Question 18

Cell envelope can interact with human tissues
and cause disease

Answer 18

Corynebacterium diphtheriae
Streptococcus pyogenes

Question 19

Characterized by S
units- the prokaryotic
ribosome is

Answer 19

70S

Question 20

• when cells of a single species
  vary to some extent in shape and size

Answer 20

Pleomorphism

Question 21

Polyphosphate granules of Corynebacterium
and Mycobacterium are called

Answer 21

metachromatic granules