Microbial Growth Chapter 6 Question Preview (ID: 43861)

a) hyperthermophiles

b) facultaive thermophiles

c) psychrophiles

d) psychrotrophs

a) psychrotrophs

b) thermophiles

c) mesophilies

d) psychrophiles

a) measurements of bacteria

b) direct methods

c) indirect methods

d) none of these

a) indirect methods

b) direct methods

c) growth factors

d) theese are all correct

a) prefer warmer temps

b) growth above 50C only

c) prefer moderate temps 20C to 45C

d) prefer cold temps -5C to 20C/ all grow between 0C to 5C

a) a group that can grow at temps as low as 0C, but grow optimatley at 20-30C: spoil foods

b) prefer cold temps -5C to 20C

c) prefer warmer temps

d) prefer moderate temps 20C to 45C

a) dry weight

b) indirect methods

c) direct methods

d) none of these

a) give an actual number

b) give an indication of the relative amount of growth

c) a superior term for measurment of bacteria

d) a guess

a) nutrients, water, temperature, and waste products

b) nutrients, ph, temperature, and an increase in wast products

c) ph, temperature, minerals, and waste products

d) none of these

a) the number of cells dividing is equal to the number of cells dying

b) the number of cells dying is equal to the number of cells being processed

c) the number of cell dying is equal to the number of cells increasing in size

d) none of these

a) All cells die

b) Cells are dying at an exponential rate

c) Some cells live

d) none of these

a) period of exponential growth

b) cells are dividing at a constant and maximum rate

c) cells continue to be extremely metabolically active

d) All of these

a) lag phase- cells adjusting to a new enviroment, a period of high meatbolic activity

b) log phase

c) stationary phase

d) death phase- cells dying at an exponential rate

a) 4 phases-log phase, lag phase, stationary phase, death phase

b) 4 phases-stationary phase, lag phase, log phase, death phase

c) 4 phases- lag phase, log phase, stationary phase, and death phase

d) none of these

a) None of these

b) A long amount of time

c) The time required for a generation to develope

d) The time required for a population to double in number/ time required for one cell to divide

a) Numbers, not an increse in size

b) An increase in size

c) An increase in numbers of everything

d) None of these

a) growth above 50C only

b) growth between -5C to 20C

c) growth between 20C to 45C

d) none of these

a) Ossmotic Pressure, PH, and Water

b) PH, Nutrients, and Osmotic Pressure

c) Temperature, Osmotic Pressure, and PH

d) Temperature, Nutrients, and Ph

a) Carbon and Oxygen

b) H2o and Carbon

c) Just Oxygen

d) none of these

a) salt loving

b) water loving

c) oil loving

d) none of these