BIO (Anaerobic)

Question 1

Involves the use of other molecules as the final electron acceptor for oxygen.

Answer 1

ANAEROBIC CELLULAR RESPIRATION

Question 2

an obligate anaerobe that uses other molecules rather than oxygen as its final electron acceptor.

Answer 2

Clostridium tetani

Question 3

Starts with glycolysis which results in the formation of ATP, NADH, and pyruvate. However, pyruvate molecules do not go through oxidation, Krebs cycle, and electron transport chain.

Answer 3

Fermentation

Question 4

Two Types Of Fermentation

Answer 4

• Lactic Acid Fermentation
• Alcoholic Fermentation

Question 5

Converts the pyruvate molecules to lactate.
Anaerobic pathway is common to obligate anaerobes. It also happens in our muscle cells during extraneous physical activities

Answer 5

Lactic Acid Fermentation

Question 6

Groups Of Bacteria That Undergoes Lactic Acid Fermentation

Answer 6

• Homofermentative Lactic Acid Bacteria
• Heterofermentative Lactic Acid Bacteria

Question 7

An organism that utilizes glucose molecules to produce lactic acid alone.
Used as starters of dairy products that help improve the product’s flavor.
Example: yogurt

Answer 7

Homofermentative Lactic Acid Bacteria

Question 8

is a homofermentative bacteria used in yogurt production.

Answer 8

Lactobacillus acidophilus

Question 9

Organisms that produce ethanol and carbon dioxide along with lactic acid as their by-product.
Rarely used as starters for dairy products.

Answer 9

Heterofermentative Lactic Acid Bacteria

Question 10

Converts pyruvate molecules to ethanol.
Used in bread and winemaking.

Answer 10

Alcoholic Fermentation

Question 11

STEP 1 of Alcoholic Fermentation

Answer 11

Pyruvate decarboxylase

Thiamine pyrophosphate (enzyme for step 1)

Pyruvate —> Acetaldehyde

Question 12

STEP 2 of Alcoholic Fermentation

Answer 12

Alcohol dehydrogenase (enzyme for step 2).

Acetaldehyde —> Ethanol & NAD+