The heart’s electrical system is responsible for making and conducting signals that trigger the heart to beat. These signals cause the heart’s muscle to contract. With each contraction, blood is pumped throughout the body. This happens 24/7 without us having to monitor it all the time so that our heart does not stop.
Variations, traits
Not all members of a species are the same. Every species exhibit variations. Traits, like eye color, are passed from parent to offspring.
Genetic variation is the subtle differences in the DNA sequence in each individual’s genomes. Genetic variation results in various forms or alleles of genes that determines distinct traits such as eye color, skin color, shape of face, and hair color that can be passed on from parents to offspring.
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Mutations (changes) to the DNA within the cells.
Answer: Mitochondria
Explanation:
The power house of the cell is known as Mitochondria. The energy that is required by the body is provided by mitochondria.
The hydrolysis of the ATP takes place in which it is converted into ADP and Pi and some amount of energy is released.
This energy is used by the body for the various types of metabolic activities. The site of ATP formation is mitochondria.
