The *heart* is the main organ of the circulatory system.
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
Carbon dioxide and water are the products of cellular respiration and the reactants of photosynthesis.
Occasionally a carbohydrate (phenol red) broth will show a pink color. The pH in the tube and the causes of this pH change will be alkaline, ammonia.
Sugar molecules make up carbohydrates, or carbs. Carbohydrates are one of the three primary nutrients included in foods and beverages, along with proteins and fats. Glucose is created by your body's breakdown of carbs. The primary source of energy for the cells, tissues, and organs in your body is glucose, sometimes known as blood sugar.
At every stage of life, carbohydrates, commonly referred to as carbs, are essential. They are the main energy source for the body and the preferred energy source for the brain. The body converts carbohydrates into glucose, a form of sugar. Your body's cells, tissues, and organs use glucose as fuel.
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The complete question is ''Occasionally a carbohydrate (phenol red) broth will show a pink color. What is the pH in the tube and what is produced causes this pH change?
a) alkaline, amino acids
b) alkaline, ammonia
c) neutral, alcohols
d) acidic, ammonia
<u>Answer:</u>
Organisms C and D are more closely related than
Organisms A and B
<u>Explanation:</u>
Organisms A and B are not related much as the distance between them is more than the organisms C and D so the C and D are closer than A and B. The phylogenetic tree shows the biological evolutionary relationship among various biological species. So the given tree shows the relationship as mentioned above.
It also show the physical and genetic relationship among the various biological species. The phylogeny is generally shown by using a particular phylogenetic tree. For example, the simple one below which describes the different evolutionary relationships between the great apes. The genus Pongo includes orangutans, Pan includes chimpanzees and bonobos, and Homo includes humans, while Gorilla is self-evident.
