Hemoglobin is a protein that all red blood cells need to carry oxygen. It is made by cells called erythrocytes in the bone marrow. The DNA sequence of the gene that codes for hemoglobin are shown below. Using what you know about protein synthesis, transcribe the DNA into mRNA.

Hemoglobin Gene: TGC CGG AAA GTC TCC ACG

Answer in a complete sentence.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

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Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain