Mod 4

Question 1

asexual reproduction method (similar to mitosis)

Answer 1

Binary Fission

Question 2

slow increase in pop. size; cells are adjusting to envi

Answer 2

lag phase

Question 3

size doubles

Answer 3

exponential/explosive growth phase

Question 4

number of cells stay the same

Answer 4

Stationary phase

Question 5

pop. size drops; nutrients run out; waste build ups

Answer 5

Death Phase

Question 6

• thrive is ref or permafrost
• optimum growth temp is under 10°C

Answer 6

Psychrophiles

Question 7

• majority of microbes incl human pathogens
• optimum growth temp is 20-40°C

Answer 7

Mesophiles

Question 8

• orgs that live in desert oils or hot springs
• optimum temp growth is above 40°C

Answer 8

Thermophiles

Question 9

• optimum pH is neutral 6-8
• majority of microbes

Answer 9

neutrophiles

Question 10

type of neutrophile that grows fastest in neutral envi but can grow in acid

Answer 10

acidotolerant

Question 11

grow fastest at pH below 6 (acidic envi)

Answer 11

acidophile

Question 12

grow fastest at pH above 8 (basic envi)

Answer 12

alkalinophiles

Question 13

force water exerts on semi-permeable plasma membrane surrounding the cell

Answer 13

osmotic pressure

Question 14

process of water moving across plasma membrane when distribution of solutes differs inside cell

Answer 14

osmosis

Question 15

orgs that live in high osmotic pressure eniv

Answer 15

osmophiles

Question 16

solute inside and outside cell are equal

Answer 16

isotonic