AP BIOLOGY

Detailed explanation-1: -Anaerobic respiration is a normal part of cellular respiration. Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen.

Detailed explanation-2: -Glycolysis (see “Glycolysis” concept) is an anaerobic process-it does not need oxygen to proceed. This process produces a minimal amount of ATP. The Krebs cycle and electron transport do need oxygen to proceed, and in the presence of oxygen, these process produce much more ATP than glycolysis alone.

Detailed explanation-3: -Glycolysis does not require oxygen and occurs during both aerobic and anaerobic respiration. If there is oxygen available, aerobic respiration can occur and the pyruvate molecules produced at the end of glycolysis will be transported to the mitochondria to enter the citric acid cycle.

Detailed explanation-4: -The first stage of cellular respiration is glycolysis. It does not require oxygen, and it does not take place in the mitochondrion-it takes place in the cytosol of the cytoplasm.

Detailed explanation-5: -Photosynthesis is the process of synthesis of food by plants using carbon dioxide and water in presence of sunlight and chlorophyll. Oxygen (O2) is released during the process as a waste product. Hence, oxygen is not essential for the process of photosynthesis.