Question

directions: give at least 3 examples of materials which show the presence of oxygen and 3 for absence of oxigen

-presence of oxygen
1_____
2_____
3_____
-absence of oxygen
1_____
2_____
3_____​

Answer 1

Answer:

Respiration can be carried out in the presence of oxygen (aerobic) or in the absence of oxygen (anaerobic). Fermentation is a special type of anaerobic respiration carried out by microorganisms. Common yeast is a microorganism which can carry out alcoholic fermentation where they respire in absence of oxygen produces alcohol, carbon dioxide and less amount of energy. Therefore, the correct answer is option C.

Answer 2

directions: give at least 3 examples of materials which show the presence of oxygen and 3 for absence of oxigen

-presence of oxygen

example of materials show presence of oxygen and materials show absence of oxygen choices.

lighted matchsticks.

rusting nail.

new chains.

-absence of oxygen

All the organisms which obtain energy by anaerobic respiration can live without the oxygen. For example, yeast is an organism which can live without the oxygen of air because it obtains energy by the process of anaerobic respiration. Yeast can survive in the absence of oxygen.

Seeds are the ones that can respire in the absence of oxygen.

Anaerobic glycolysis is the process of producing ATP in the absence of oxygen.

Bacteria that grow only in the absence of oxygen, such as Clostridium, Bacteroides, and the methane-producing archaea (methanogens),