Growth

Question 1

Macronutrients

- Major elements in cell macromolecules

Answer 1

• C, O, H, N, P, S
• Ions necessary for protein function
• Mg2+, Ca2+, Fe2+, K

Question 2

Trace elements necessary for enzyme function

Answer 2

• Co, Cu, Mn, Zn

Question 3

Phototrophs

Answer 3

obtain energy from chemical reactions

triggered by light

Question 4

Chemotrophs

Answer 4

obtain energy from oxidation-

reduction reactions

Question 5

Lithotrophs

Answer 5

use inorganic molecules as a source of

electrons.

Question 6

Organotrophs

Answer 6

use organic molecules.

Question 7

Complex media

Answer 7

are nutrient rich but poorly defined.

Question 8

Synthetic media

Answer 8

are precisely defined.

Question 9

Enriched media

Answer 9

are complex media to which specific

blood components are added.

Question 10

Selective media

Answer 10

favor the growth of one organism

over another

Question 11

Differential media

Answer 11

exploit differences between two

species that grow equally well.

Question 12

bacillus can grow in the presence and absence of

Answer 12

air