Answer:
Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle.
Explanation:
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Nucleotides in DNA contain four different nitrogenous bases: Thymine, Cytosine, Adenine, or Guanine.
Pyrimidines: Cytosine and Thymine each have a single six-member ring. Purines: Guanine and Adenine each have a double ring made up of a five-atom ring attached by one side to a six-atom ring.
Quick growth to high densities of bacteria such as E. coli can give rise to mutants which are genetic variants within a species.
<h3>Mutants</h3>
Mutants are mutated forms of species.
Mutation refers to changes to the DNA base sequence of organisms. This can be caused by a variety of factors.
In a population of high density consisting of a single species, the frequency of mutation is usually high.
Mutation will create phenotypically different organisms within the same species population. These organisms are known as mutants and not only phenotypically different but also genetically variant.
More on mutants can be found here; brainly.com/question/12868218
The answer is B. Natural Selection
Answer:
Cellular respiration is related to breathing because breathing provides compulsory oxygen for the process of cellular respiration to happen and cellular respiration is a process where cells obtain energy. In time of inhalation, the oxygen molecules are necessary for cellular respiration. During the exhalation process, the CO₂ that is produced by cellular respiration leaves the body via nose or mouth. Breathing and cellular respiration are critically important because without either one of the processes, the other cannot take place
Explanation:
