A single-celled organism is represented in the diagram shown below. An activity is indicated by the arrow.
Which substance is the main energy source needed to perform this process?
a
Enzyme
b
Photosynthesis
c
ATP
d
DNA
c. ATP
The main energy source needed to perform the process in a single-celled organism is c) ATP (Adenosine Triphosphate).
To determine the main energy source needed for the process shown in the diagram, we need to analyze the options given.
a) Enzyme: Enzymes are biological catalysts that help speed up chemical reactions in cells. While enzymes play a crucial role in various cellular processes, they are not a direct source of energy.
b) Photosynthesis: Photosynthesis is the process by which plants and some microorganisms convert light energy into chemical energy in the form of glucose. However, in the diagram provided, there is no indication of light or any other factors related to photosynthesis.
c) ATP: Adenosine triphosphate (ATP) is a molecule commonly referred to as the "energy currency" of cells. ATP stores and provides energy for various cellular processes. It is synthesized during cellular respiration and used for tasks such as muscle contraction, active transport, and protein synthesis. The diagram does not show the process of ATP synthesis or usage directly.
d) DNA: Deoxyribonucleic acid (DNA) is the genetic material that carries the instructions for the development and functioning of living organisms. DNA is not a direct source of energy for cellular processes.
Based on the provided options and the information in the diagram, the main energy source needed to perform the activity indicated by the arrow is ATP (option c). While the diagram does not explicitly depict ATP, it is the molecule responsible for providing energy within cells.