Post Laboratory (LAB)

Question 1

ubiquitous and grow by increasing their number in a population

Answer 1

microorganisms

Question 2

in this phase of growth curve, enzymes and proteins are synthesized for adaptation

Answer 2

lag

Question 3

uniform physiological process, actively dividing microorganisms

Answer 3

log

Question 4

metabolites are produced

Answer 4

log

Question 5

stationary phase is where__ growth occurs

Answer 5

cryptic growth

Question 6

refers to the hidden or suppressed growth of individual bacterial cells within a population that is otherwise experiencing nutrient limitations or a stationary phase.

Answer 6

cryptic growth

Question 7

do # of cells decrease in death phase?

Answer 7

no

Question 8

what decreases in death phase

Answer 8

viable cells

Question 9

sample to be counted must be __ to obtain appropriate number of colonies

Answer 9

diluted

Question 10

record weight with crucible/plate

Answer 10

fresh weight

Question 11

-
measure from time to time until might is constant

Answer 11

dry weight

Question 12

affects the thrive of microbial communities by changing the availability and diffusion of nutrients, supply of oxygen, and heat dissipation

Answer 12

moisture content

Question 13

moisture content affects the thrive of microbial communities by changing the availability and diffusion of __, supply of oxygen, and heat dissipation

Answer 13

nutrients

Question 14

moisture content affects the thrive of microbial communities by changing the availability and diffusion of nutrients, supply of ___, and heat dissipation

Answer 14

oxygen

Question 15

moisture content affects the thrive of microbial communities by changing the availability and diffusion of nutrients, supply of oxygen, and ___ ___

Answer 15

heat disspiation

Question 16

which microbial groups other than bacteria, actinomycetes, fungi are expected to dominate in each soil type

Answer 16

protist, algae

Question 17

how do pH and moisture content affect predominant microbial types?

Answer 17

intracellular pH is close to neutrality

Question 18

what is the function of rose bengal in PDA

Answer 18

inhibit mold and cultivate yeast

Question 19

differentiate actinomycetes from other membners of eubacteria

Answer 19

actinomycetes
gram positive -
mycelia
cocoid
branch
-produces spores
major source of antibiotics

Question 20

earthy or musty odor produced by actinomycetes

Answer 20

geosmin

Question 21

gram reaction of actinomycetes

Answer 21

+

Question 22

when is MPN method used over SPC in estimating population

Answer 22

water sample, quality control of food, detecting coliform

Question 23

example of colifo
rms

Answer 23

E.coli
S. marcescens

Question 24

excellent way to provide microbes at a high density

Answer 24

hay infusion

Question 25

identify microbes in hay infusion

Answer 25

+1

Question 26

a single-celled freshwater animal that has a characteristic slipper-like shape and is covered with cilia.

Answer 26

paramecium

Question 27

is a type of euglenoid. Euglenoids are unicellular microorganisms, that have a flexible body. They possess the characteristic features of plants and animals.

Answer 27

euglena

Question 28

They are known for the vampire-like feeding habit of several vampyrellid amoebae, which pierce the cell walls of other eukaryotic cells to feed specifically on the cell contents, a feeding mechanism known as protoplast extraction

Answer 28

vampyrella

Question 29

is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus.

Answer 29

spirogyra

Question 30

volvox can be (2)

Answer 30

unicellular colony

Question 31

plant microbe relationships are either (3)

Answer 31

beneficial neutral detrimental

Question 32

example of detrimental interactions of plants and microbes

Answer 32

rust (ralstonia) that harm plants and reduce productivity

Question 33

beneficial interactions of plant sand microbes

Answer 33

mycorrhizae facilitating uptake of soil nutrietns and stress tolerance, protects plants from pest and pathogens to improve health and yeield

Question 34

neutral interaction of plants and microbes

Answer 34

no interaction, may interact but no known benefit or harm