The jugular veins are the veins responsible for bringing deoxygenated blood from the head to the heart. There are two sets of jugular veins, the internal and external ones. In pigs, the internal and external jugular veins are similar in size, while in humans the internal jugular vein is bigger in diameter than the external.
Answer: The correct option is A.
Explanation: there are two processes that takes place in cardiac cycle. These procesesss comprises of complete relaxation and contraction of both the atria and ventricles which usually last for about 0.8 seconds. Starting with the chambers in the diastole, blood flows passively from the veins into the atria and past the atrioventicular valves into the ventricles. Contraction begins in the atria following the depolarization of the atria and blood is pumped into the ventricles. The ventricles begins contraction by raising pressure within the ventricles.
Answer:
A crawling and roping
They can help us identify the insect
Answer:
A, B and C may be true
Explanation:
The three-dimensional structure (3D) of a protein, also known as tertiary structure, is critical to its function. In general, the 3D protein structure consists of alpha-helix and beta-sheets (secondary structures) associated through disordered coiled-coil regions. Genetic mutations may cause modifications in the 3D protein structure by modifying amino acids that are added to the growing polypeptide chain during the process of translation. In consequence, the relationships among amino acids (i.e., the intermolecular attractive forces that hold them together) may also be altered by these mutations. In general, mutations that generate amino acid changes at the active site of the enzyme will have a deleterious effect, thereby decreasing or inactivating protein function. However, there are situations where a mutation may be beneficial and can eventually increase the rate of reaction of a protein.
Diffusion things go from high to low concentration so if there's more sugar inside the potato water will go in because there's less water inside than outside.
