Microbiology SA

Question 1

Conversion of Pyruvic acid to alcohol follows after glycolysis in “Fermentation” pathway

True or False

Answer 1

True

Question 2

In anabolism, the same pathways in respiration are utilized by the microorganisms to synthesize biomolecules

True or False

Answer 2

True

Question 3

Less electrons removed by the carriers from the substrates result in less protons translocated across the membraneETC

True or False

Answer 3

True

Question 4

Another importance of cell membrane in prokaryotes is its function in energy production.

True or False

Answer 4

True

Question 5

Among CO2, O2, 1 ATP, 1 molecule of glucose and 1 molecule of lactic acid, which contains thegreatest amount of energy for a cell? =>

Answer 5

glucose

Question 6

A carbon compound that is used six times to synthesize sugars in Calvin-Benson cycle.

Answer 6

Carbon dioxide

Question 7

: In the reaction: Acetaldehyde + NADH + H+ → Ethanol + NAD+ , which is reduced?

Answer 7

Acetaldehyde

Question 8

In the reaction: Acetaldehyde + NADH + H+ → Ethanol + NAD+ , which is oxidized? =

Answer 8

NADH

Question 9

A group of enzymes that function as electron carriers in respiration and photosynthesis. =>

Answer 9

NAD

Question 10

The type of phosphorylation where cytochrome c passes two electrons to cytochrome a. =>

Answer 10

Electron transport phosphorylation

Question 11

Type of phosphorylation where an electron is liberated from chlorophyll and passes down the ETC

Answer 11

photophosphorylation

Question 12

n Chemiosmosis, protons can only diffuse across a membrane through special channels that containsthis enzyme. =>

Answer 12

ATP Synthase

Question 13

: A dehydrogenase coenzyme derived from riboflavin. =>

Answer 13

Flavin mononucleotide

Question 14

Phosphorylation when phosphoenolpyruvic acid transfers its phosphate to ADP and become pyruvicacid.

Answer 14

substrate level phosphorylation

Question 15

One of the common pathways between aerobic and anaerobic respiration is Krebs Cycle

True or False

Answer 15

True

Question 16

Intermediates in Krebs cycle are consumed and thus not recycled back to the pathway for another round ofpathway.

True or False

Answer 16

False

Question 17

It is the movement of the H+ ions by concentration gradient that results in ATP generation in Electron transportlevel phosphorylation and photophosphorylation.

True or False

Answer 17

True

Question 18

About of 48 ATPs can be produce from one glucose molecule.

True or False

Answer 18

False

Question 19

Adenosine triphosphate is phosphorylated Adenosine diphosphate

T/F

Answer 19

True

Question 20

When a carrier such as NAD+ receives an electron, it is oxidized.

T/F

Answer 20

False

Question 21

Mannitol Salt Agar (MSA) is used as a medium for the isolation and identification of Staphylococcus aureus fromclinical and non-clinical specimens. It is recommended for the detection and enumeration of coagulase-positiveStaphylococci in milk, food and other specimens and encourages the growth of a group of certain bacteria whileinhibiting the growth of others. Mannitol Salt Agar contains beef extract and proteose peptone, which makes it verynutritious as they provide essential growth factors and trace nutrients such as nitrogen, vitamins, minerals andamino acids essential for growth. The medium contains 7.5% concentration of sodium chloride which results in thepartial or complete inhibition of bacterial organisms other than staphylococci and 15% of agar.  Whatcharacteristic/s apply to MSA medium? Check all below that applies

Answer 21

Selective
Differential
Complex
Solid

Question 22

a population of cells arising from a single cell or cfu.

Answer 22

axenic culture

Question 23

growing a population of microbes

Answer 23

cultivation

Question 24

substances provided to the population for growth

Answer 24

nutrients

Question 25

a material or nutrient supply used for growing microbes in the lab.

Answer 25

culture medium

Question 26

These are organization maintaining axenic cultures of microorganisms

Answer 26

culture collection

Question 27

While glucose is always featured in catabolic pathway illustrations, proteins and lipids can also be sources ofelectrons and protons T/F

Answer 27

True

Question 28

addition of sterile oil to agar culture to limit oxygen what preservation method

Answer 28

overlaying with mineral oil

Question 29

rapid drying in frozen state what preservation method

Answer 29

lyophilization

Question 30

employs -196 C on culture added with glycerol what preservation method

Answer 30

freezing with liquid nitrogen

Question 31

Employs 45C to remove moisture; for spore- and cyst-formers only what preservation method

Answer 31

drying

Question 32

Used set of culture media for interval transfers what preservation method

Answer 32

periodic transfer to fresh media

Question 33

In fermentation, the products, alcohol and lactic acid are fully oxidized materials T/F

Answer 33

False

Question 34

One major difference between aerobic and anaerobic respiration is the final electron acceptor T/F

Answer 34

True

Question 35

A phosphate from an intermediate metabolite can be directly transferred to another organic molecule. T/F

Answer 35

True

Question 36

Water is among the reactants during catabolism T/F

Answer 36

True

Question 37

The main source of energy on earth.

Answer 37

sun

Question 38

Enzymes belong to this class of biomolecules.

Answer 38

proteins

Question 39

These include groups of metabolic processes that release energy.

Answer 39

catabolic

Question 40

Another term for glycolysis.

Answer 40

Embden-Meyerhof-Parnas Pathway

Question 41

Metabolic term for gain of electrons coupled to release of hydrogen ions from the substrate.

Answer 41

reduction

Question 42

Anaerobic respiration produces more ATP than aerobic respiration. T/F

Answer 42

False

Question 43

Bacteria use alternative pathways to glycolysis to produce other intermediates not produced in glycolysis T/F

Answer 43

True

Question 44

In both prokaryotes and eukaryotes, glycolysis happens in the cytoplasm T/F

Answer 44

True

Question 45

Explain why there is a difference of 2 ATPs in the available ATPs produced from one glucose in eukaryotes andprokaryotes.

Answer 45

In eukaryotic cells, unlike in prokaryotes, NADH produced in the cytoplasm during glycolysis must betransferred across the mitochondrial membrane before it can provide electrons to the electron transport chain,which needs energy. As a result, 1 to 2 ATP are produced from this NADH

Question 46

Only alcohol and lactic acid can be produced from fermentation pathway. T/F

Answer 46

False

Question 47

In catabolism, energy is released from organic molecules while they are broken down into simpler forms. T/F

Answer 47

True