Cell morphology

Question 1

What is the gram reaction terminology?

Answer 1

• positive
• purple
• negative
• pink

Question 2

What is the staining terminology?

Answer 2

• regular
• irregular
• beaded
• bi-polar
• even
• uneven areas of lighter and darker stain in individual cells
• ends of individual cells stain more darkly

Question 3

what is the shape terminology?

Answer 3

• cocci
• rods
• cocco-bacilli
• filaments
• spirals

Question 4

what is the arrangement terminology?

Answer 4

• singles
• pairs
• tetrads
• chains
• clusters
• palisades

Question 5

What is the size terminology?

Answer 5

40x objective lens
one division= 2.5 micrometers

100x objective lens
one division= 1 micrometer

Question 6

what is form terminology?

Answer 6

• regular
• irregular
• pleomorphic

Question 7

what is rod axis terminology?

Answer 7

straight

curved

Question 8

what is the structure terminology?

Answer 8

Capsules

• not visible when gram stained
• clear area around pink cell with capsule stain

Endospores

• visible when Gram stained as an unstained ‘bubble’
• stains green with endospore stain