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velikii [3]
3 years ago
6

What is the only artery in the body that carries deoxygenated blood

Biology
1 answer:
-Dominant- [34]3 years ago
8 0

Answer: Pulmonary artery

Explanation:

All arteries carry blood away from the heart while all veins carry blood to the heart. With the exception of pulmonary artery, all arteries contain oxygenated blood while all veins except pulmonary vein contain deoxygenated blood.

Thus, pulmonary artery is the answer

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Explain why scientirsts concluded that the instructions for species characteristics were carried in DNA.
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Answer:

Explanation:

Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual.

DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA.

Genes are genetic information or instruction that specify an individual. it is located in the chromosome in the nucleus. DNA contains gene which helps to make molecules called proteins. It is the basis of all inheritance and the expression of the gene is what produces the phenotype that is visible.

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stepan [7]

Answer:

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Answer: The primary motor cortex for control of voluntary muscles is found in the precentral gyrus of the frontal lobes.

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Voluntary muscles are muscles that we can control consciously or we can control them at will and we can choose when we want to use them. They are also refers to as skeletal muscles and are attached to bones. The are majorly use for locomotion.

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