A) Which molecule carries energy inside cells? (1 point)
oxygen
glucose
water
ATP
ATP
The molecule that carries energy inside cells is ATP (Adenosine Triphosphate).
The molecule that carries energy inside cells is ATP (adenosine triphosphate). To arrive at this answer, you need some basic knowledge about cellular energy and its transfer. Here's how you can reason through the options and determine the correct answer:
1. Oxygen: While oxygen is vital for cellular respiration, it is not directly involved in the storage or transfer of energy inside cells. Oxygen acts as the final electron acceptor in the electron transport chain during cellular respiration, which helps in producing ATP.
2. Glucose: Glucose is an important fuel molecule that provides the raw materials for the production of ATP. Through a series of metabolic reactions, glucose is broken down during cellular respiration to generate ATP.
3. Water: Water is crucial for many cellular processes and functions, but it does not carry energy directly. It is involved in various biochemical reactions, but not as an energy carrier.
4. ATP: Adenosine triphosphate (ATP) is considered the energy currency of cells. ATP stores and transfers energy within cells. When the high-energy phosphate bond in ATP is broken (hydrolyzed), it releases energy that can be utilized by cells for various processes.
Based on this reasoning, the correct answer is ATP, as it is the molecule specifically designed for energy storage and transfer inside cells.