Question

which of the following statements describes a difference between photosynthesis and cellular respiration in plants?
1 point

• photosynthesis occurs only during the day, whereas cellular respiration occurs only at night.
• photosynthesis involves only one reaction, whereas cellular respiration involves many steps.
• photosynthesis occurs only in cells containing chlorophyll, but cellular respiration occurs in all cells.
• photosynthesis converts light energy into chemical energy, but cellular respiration converts light energy into heat energy.

why is glycolysis considered an anaerobic process?

• it uses a great deal of oxygen
• it requires sunlight
• it does not require oxygen
• it takes place in the cytoplasm

Explanation:

First Question (Difference between Photosynthesis and Cellular Respiration)

• Analyze each option:
• Option 1: Cellular respiration occurs all the time, not just at night. Eliminate.
• Option 2: Photosynthesis has two main stages (light - dependent and light - independent) and multiple steps. Eliminate.
• Option 3: Photosynthesis needs chlorophyll - containing cells (like plant leaf cells) to capture light. Cellular respiration occurs in all plant cells (to produce energy). This is correct.
• Option 4: Cellular respiration converts chemical energy (from glucose) into ATP (chemical energy) and heat, not light energy. Eliminate.

• Recall the definition of anaerobic: a process that does not require oxygen.
• Analyze options:
• Option 1: Glycolysis does not use a great deal of oxygen (it can occur without oxygen). Eliminate.
• Option 2: Glycolysis does not require sunlight (that's for photosynthesis). Eliminate.
• Option 3: Glycolysis is anaerobic because it does not require oxygen. This is correct.
• Option 4: Glycolysis occurs in the cytoplasm, not the mitochondria. Eliminate.

Answer:

C. Photosynthesis occurs only in cells containing chlorophyll, but cellular respiration occurs in all cells. (Assuming the options are labeled A - D in order, with this being the third option)

Second Question (Why Glycolysis is Anaerobic)