AP BIOLOGY

LABORATORY REVIEW

CELL RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
differences between photosynthesis and chemosynthesis is that ____
A
photosynthesis uses light energy and needs oxygen, chemosynthesis uses chemical energy and needs water
B
photosynthesis uses light energy and needs water, chemosynthesis uses chemical energy and does not need water
C
Photosynthesis needs water and carbon dioxide and chemosynthesis needs light and water
Explanation: 

Detailed explanation-1: -Photosynthesis and chemosynthesis are both processes by which organisms produce food; photosynthesis is powered by sunlight while chemosynthesis runs on chemical energy.

Detailed explanation-2: -During chemosynthesis, bacteria living on the sea floor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in sea water).

Detailed explanation-3: -Chemosynthesis is the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

Detailed explanation-4: -The difference between organisms that use chemosynthesis and organisms that use photosynthesis is that photosynthetic organisms need sunlight to make food energy. Organisms that use chemosynthesis do not require sunlight to make food energy, but they need inorganic chemicals from their environment.

Detailed explanation-5: -Photosynthesis and chemosynthesis are both responsible for producing organic molecules from inorganic compounds like carbon dioxide and water or hydrogen sulphide. They both produce gases as by-products from the reactions such as oxygen or sulphur gases. They both produce glucose as food.

There is 1 question to complete.