carbohydrates
The macromolecule that makes up around half of the calories you should eat in a day is carbohydrates. Other macromolecules that are important to your diet are proteins and fats.
When something gives us energy, it means it helps fuel our cells and bodies to perform tasks and functions. This can come from the food we eat, physical activity, or adequate rest and sleep. Energy is essential for our body to carry out everyday activities and maintain overall well-being.
Carbohydrates are the macromolecules that provide energy to the body for carrying out cellular functions. When broken down through digestion, carbohydrates are converted into glucose, which is used by cells as a primary source of energy through the process of cellular respiration.
Food provides cells with energy in the form of glucose, which is broken down through a series of metabolic processes to produce ATP, the main energy currency of cells. The ATP generated is used by cells to power essential functions and activities.
The Mitochondria
Hemoglobin gives the red blood cells the ability to carry oxygen.
It gives supply of quick energy
ATP (adenosine triphosphate) serves as the energy currency of the cell by providing readily available energy for cellular processes. It is produced through cellular respiration and is used to drive various energy-requiring reactions in the cell, such as muscle contraction, active transport, and synthesis of macromolecules. When ATP is hydrolyzed to ADP (adenosine diphosphate), energy is released and can be used by the cell for various functions.
Their DNA's coding gives commands to cells on what to do.
It gives the cells energy to do there different activities.
to provide energy
Plant cells can be used to harness the energy of the sun, the chloroplasts in it contains chlorophyll, the green pigment that gives leaves their colour and absorbs light energy. Also, photosynthesis takes place in chloroplasts!