PATHOLOGY MCQ
CELL DAMAGE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Only species Y is anaerobic.
|
|
|
Both species X and Y are aerobic.
|
|
|
Both species X and Y are anaerobic.
|
|
|
Only species Y is aerobic.
|
Detailed explanation-1: -Scientists find that species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations? Only species Y is anaerobic.
Detailed explanation-2: -A combustion reaction always has oxygen as one reactant. The second reactant is always a hydrocarbon, which is a compound made up of carbon and hydrogen. A combustion reaction also always produces CO2 and H2O.
Detailed explanation-3: -Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.
Detailed explanation-4: -Photosynthesis releases energy, while cellular respiration stores energy.
Detailed explanation-5: -What kinds of organisms use anaerobic cellular respiration? Some prokaryotes-bacteria and archaea-that live in low-oxygen environments rely on anaerobic respiration to break down fuels.