Answer:
The blood in the pulmonary artery is going to the heart to collect oxygen, and therefore has a low content of oxygen. So, the blood in the pulmonary artery is a violet colour because it has low oxygen. The blood in the pulmonary vein is oxygen rich, and so it gives a scarlet color.
Answer: C solar Eclipse
Explanation: A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth. A solar eclipse can only take place at the phase of new moon, when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface.
Answer:
D. The rest of the country has only evergreen trees, so autumn is much less colorful in those areas.
Explanation:
The deciduous birch forests of the eastern United States have been reducing their territory by anthropic action. Yet in Florida it still persists. In these forests, plants such as birches do not support the harsh winters and that is why they have the strategy of losing their leaves. they start to turn their yellow leaves in the fall season. In other areas of the country where there are coniferous forests, grasslands and grasslands, trees have other strategies and generally have evergreens trees.
Answer and Explanation: In enzyme kinetics, one constant describing enzyme activity is <em>Maximal Velocity</em> (Vmax). It indicates how fast an enzyme can catalyze the reaction. It is dependent on substrate concentration.
As the muscle is an organ which needs a great amount of energy, the enzyme glycogen phosphorilase is very active on the organ, compared to the liver, where glicose is stored. So, the Vmax of glycogen phosphorylase expressed in muscle is faster than when expressed in the liver, means the enzyme in muscle has a bigger concentration of substrate and therefore will reach Vmax faster, i.e. will be significantly larger.
