Lab 2: microbes in the environment

Question 1

Growth characteristic: pellicle

Answer 1

some bacteria float on the top of the surface of broth

Question 1

Microbiome

Answer 1

The microbes that inhabit a particular environement

Question 2

Growth characteristic: sediment

Answer 2

Some bacteria sink to the bottom

Question 3

Growth characteristic: Turbidity

Answer 3

cloudiness

Question 4

Growth characteristic: flocculent

Answer 4

floating clumps

Question 5

Growth characteristic: ring

Answer 5

Ring at the surface

Question 6

Colony

Answer 6

When bacteria grow on plates; a colony arises from one particular cell that lands on one particular spot on a plate and forms a visible mass of organisms

Question 7

Whole colony shape: round

Answer 7

circular

Question 8

Whole colony shape: filamentous

Answer 8

branching out from a central point

Question 9

Whole colony shape: rhizoid

Answer 9

Branched like roots

Question 10

Whole colony shape: punctiform

Answer 10

tiny/pinpoint

Question 11

Margin: entire/smooth

Answer 11

smooth edges

Question 12

Margin: Undulate

Answer 12

Wavy

Question 13

Margin: Lobate

Answer 13

Lobed

Question 14

Margin: Filamentous (filiform)

Answer 14

Branched out

Question 15

Margin: rhizoid

Answer 15

Branched like tree roots

Question 16

Elevation: Pulvinate

Answer 16

very convex

Question 17

Elevation: Umbonate

Answer 17

Raised in the center like a sombrero

Question 18

Texture: Mucoid

Answer 18

Mucous-like

Question 19

Texture: butyrous

Answer 19

Buttery

Question 20

Why do we use agar and not gelatin?

Answer 20

1. Microbes cannot break down agar
2. Gelatin would melt in an incubator