Answer:
P wave
Explanation:
Electrocardiogram records the strength and timing of electrical activity in heart. As various regions of heart contract at different times and for different duration, the electrical activity is not constant and shows a series of rise and fall. There are three main components of ECG: P wave, QRS complex and T wave.
P wave indicates the beginning of electrical signal in the right atrium. The signal spreads in both right and left atria which leads to their contraction. As a result, blood is pumped into the ventricles and rest of the process occurs.
Answer:
Hydrolysis is a process in which polymers are brokendown into monomers
Explanation:
Macromolecules such as carbohydrates,proteins,lipids and nucleic acids are important components of the body cells. These components are important for an organism to survive and grow.Most macromolecules are polymers. A molecule of polymer is formed by binding of many smaller molecule called the monomers. These simple monomers linked together to form a complex polymer. The polymers and monomers are typically found the sugar. The monomers are bind together into long chain called polymers.But lipids are not polymers because they built by different monomers which resemble each other in their composition.
The foundation of relative
dating is it does not have an atmospheric reservoir. The
phosphorus cycle does not include gas phase. Its largest reservoir is located
in sedimentary rocks, and the cycle begins there. Phosphate from rocks are
eliminated and then released into the soil and water. The phosphate ions then
absorbed by plants and transferred to animals or organisms which eat plants. It
is then returned to the soil by way of excretion and decomposed by plants and
animals when they die.
1) divergent boundaries - where plates move away from each other.
2)convergent boundaries - where plates move toward each other and collide.
3)transform boundaries - when two plates grin past each other.
