NUTRITION GROWTH AND GENETICS

Question 1

It is a manner of bacterial cell division where the bacterium splits into two.

Answer 1

BINARY FISSION

Question 2

It is a mound or pile of bacteria
containing millions of cells.

Answer 2

COLONY

Question 3

It refers to the time it takes for one bacterial cell to divide via binary
fission into 2 daughter cells.

Answer 3

GENERATION TIME

Question 4

FORMULA : # of bacterial cells at the end
of the incubation period

Answer 4

b

Question 5

initial number of cells inoculated

Answer 5

B

Question 6

binary fission formula

Answer 6

2^n

Question 7

FORMULA : #of generations

Answer 7

n

Question 8

constant

Answer 8

0.301

Question 9

A word to describe a bacteria that
require complex nutritional
requirements.

Answer 9

FASTIDIOUS

Question 10

A term used to describe bacteria
that require cell culture for growing
in vitro.

Answer 10

OBLIGATE INTRACELLULAR

Question 11

3 MAJOR NUTRIENTS OF BACTERIA

Answer 11

-CARBON
-NITROGEN
-ATP

Question 12

composes 50% of the dry weight of a
bacterium

Answer 12

CARBON

Question 13

used for making cellular constituents

Answer 13

CARBON

Question 14

makes up 14% of the bacterium’s dry weight

Answer 14

NITROGEN

Question 15

used for making proteins and nucleic acids

Answer 15

NITROGEN

Question 16

used for performing cellular functions

Answer 16

ATP

Question 17

4% of the bacterium’s dry weight is made up of:

Answer 17

Phosphate
Phospholipids
Sulfur

Question 18

use for nucleic acid synthesis

Answer 18

PHOSPHATE

Question 19

use for the composition of the cell
membrane

Answer 19

Phospholipids

Question 20

for protein synthesis

Answer 20

Sulfur

Question 21

Other requirements:

Answer 21

Na+, K+, Cl-, Ca++
sodium, potassium, chlorine, serum calcium

Question 22

Carbon dioxide is their main
source of Carbon

Answer 22

Autotrophs/Lithotrophs

Question 23

require ORGANIC substances for
growth

Answer 23

Heterotrophs/Organotrophs

Question 24

autotrophs that obtain energy
from light (photosynthesis)

Answer 24

Phototrophs

Question 25

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 25

Chemolithotrophs

Question 26

GLUCOSE is the main source of Carbon

Answer 26

Heterotrophs/Organotrophs

Question 27

all bacteria that inhabit the body are generally______

Answer 27

Heterotrophs/Organotrophs

Question 28

0-20 deg. C

Answer 28

PSYCHROPHILIC

Question 29

Cold loving bacteria

Answer 29

psychrophilic

Question 30

salinity 20%

Answer 30

psychrophilic

Question 31

Additional Nutrition for PSYCHROPHILIC BATERIA

Answer 31

ammonia and sulfur

Question 32

Psychotrophs grows best____ ref. temperature

Answer 32

4 deg.

Question 33

Examples of Psychrophilic bacteria:

Answer 33

Listeria monocytogenes Yersinia enterocolitica

Question 34

autotrophs that obtain energy from light (photosynthesis)

Answer 34

Phototrophs

Question 35

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 35

Chemolithotrophs

Question 36

20-45 deg. C

Answer 36

Mesophilic

Question 37

Bacteria that grow at moderate temp.

Answer 37

Mesophilic

Question 38

autotrophs that obtain energy from light (photosynthesis)

Answer 38

Phototrophs

Question 39

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 39

Chemolithotrophs

Question 40

autotrophs that obtain energy from light (photosynthesis)

Answer 40

Phototrophs

Question 40

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 40

Chemolithotrophs

Question 41

Optimum temp. for Mesophilic bacteria

Answer 41

37 deg. C

Question 42

Most pathogenic bacteria are_____

Answer 42

mesophiles

Question 43

50-125 deg. C

Answer 43

Thermophilic

Question 44

Heat Loving bacteria

Answer 44

Thermophilic

Question 45

autotrophs that obtain energy from light (photosynthesis)

Answer 45

Phototrophs

Question 46

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 46

Chemolithotrophs

Question 47

Organisms that grow at temp. >100 deg. C, commonly seen in hot springs, hydrothermal vents and compost pits.

Answer 47

Thermophilic

Question 48

autotrophs that obtain energy from light (photosynthesis)

Answer 48

Phototrophs

Question 49

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 49

Chemolithotrophs

Question 50

Examples of Thermophilic bacteria:

Answer 50

Bacillus stereathermophilus Sulfolobus Pyrococcus Pyrodictium Thermus aquaticus

Question 51

(pH 7.0-7.4) organisms that prefer a neutral to slightly alkaline growth medium

Answer 51

Neutrophiles

Question 52

(pH 2.0-5.0)

Answer 52

Acidophiles

Question 53

Acidophiles example:

Answer 53

Lactobacillus acidophilus

Question 54

(pH >8.5)

Answer 54

Alkaliphiles

Question 55

Alkaliphiles example:

Answer 55

Vibrio cholerae

Question 56

types of salinity

Answer 56

HALOPHILIC HALODURIC

Question 57

"halo" means

Answer 57

salt

Question 58

organisms that grow best at salty environment (8-10% salt)

Answer 58

HALOPHILIC

Question 59

HALOPHILIC example;

Answer 59

Vibrio spp.

Question 60

organisms that CAN TOLERATE a salty environment (7.5% salt)

Answer 60

HALODURIC

Question 61

HALODURIC example:

Answer 61

Staphylococcus aureus

Question 62

are organisms that survive deep in the ocean or in oil wells where the pressure is HIGH

Answer 62

PIEZOPHILES

Question 62

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 62

Chemolithotrophs

Question 62

autotrophs that obtain energy from light (photosynthesis)

Answer 62

Phototrophs

Question 63

Most organisms grow at normal barometric pressure of ______

Answer 63

14.7 psi(pounds per square inch)

Question 63

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 63

Chemolithotrophs

Question 63

autotrophs that obtain energy from light (photosynthesis)

Answer 63

Phototrophs

Question 64

autotrophs that obtain energy from oxidation of inorganic cpds.

Answer 64

Chemolithotrophs

Question 64

autotrophs that obtain energy from light (photosynthesis)

Answer 64

Phototrophs