The heart is an organ (rather than a tissue) because it has an important (and complex) function. Tissues don't have nearly as many things in it as the heart does.
Hope this helps! :)
Lysosomes are a cell organelle<span> that contains digestive enzymes and are specialized in</span><span> digesting food particles, cell parts, and foreign invaders.</span>
Well, it is possible that those stop codons have dual functions. They can act as stop signals or, on the other hand, they can be used to incorporate amino acids.
Other explanation is that multiple stop codons may reduce the rate of nonsense mutation.
The bird fossil Archaeopteryx is a species linking dinosaurs and birds.
Answer;
Carbohydrates;
The macromolecule that provides a person with most of the energy that is needed for daily activities is carbohydrates.
Explanation;
-Biological macromolecules fall into four categories: carbohydrates, proteins, lipids and nucleic acids. The body uses carbohydrates, lipids and proteins for energy.
Carbohydrates are the main source of energy and for structural purposes, Lipids are used to store energy; important parts of biological membranes and waterproof coverings, Nucleic acids helps to store and transmit hereditary or genetic information. Proteins functions as a source of energy and to control the rate of reactions and regulate cellular process.
