What macromolecule is the main source of energy for a cell?

What macromolecule is the main source of energy for a cell?

carbohydrates
The four major groups of macromolecules found in living things are carbohydrates, lipids, nucleic acids, and proteins. Carbohydrates are compounds made up of carbon, hydrogen, and oxygen atoms, usually in a ratio of 1 : 2 : 1. Living things use carbohydrates as their main source of energy.

Which macromolecule has the main function of providing the body with energy?

The body uses three main nutrients to function— carbohydrate, protein, and fat. These nutrients are digested into simpler compounds. Carbohydrates are used for energy (glucose).

What macromolecule is used controls every function in the human body?

Proteins are the most versatile macromolecules in living systems and serve crucial functions in essentially all biological processes.

Which macromolecule provides a person with most of the energy?

Which macromolecule provides a person with most of the energy that is needed for daily activities? Glycogen is an energy-storage molecule in humans.

What macromolecule is responsible for cell membrane and energy storage?

Lipids
Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of lipids called fats. Lipids also provide insulation from the environment for plants and animals.

What are the four major classes of macromolecules?

1 Within cells, small organic molecules are joined together to form larger molecules. 2 These large macromolecules may consist of thousands of covalently bonded atoms and weigh more than 100,000 daltons. 3 The four major classes of macromolecules are carbohydrates, lipids, proteins, and nucleic acids.

How are monomers and monomers related in macromolecules?

The chemical mechanisms that cells use to make and break polymers are similar for all classes of macromolecules. Monomers are connected by covalent bonds that form through the loss of a water molecule. This reaction is called a condensation reaction or dehydration reaction.

How are organic molecules joined together to form macromolecules?

Lecture Outline Overview: The Molecules of Life Within cells, small organic molecules are joined together to form larger molecules. These large macromolecules may consist of thousands of covalently bonded atoms and weigh more than 100,000 daltons.

How are lipids different from other macromolecules?

Unlike other macromolecules, lipids do not form polymers. The unifying feature of lipids is that they all have little or no affinity for water. This is because they consist mostly of hydrocarbons, which form nonpolar covalent bonds. Lipids are highly diverse in form and function.