<span>Oxygen carried in a hemoglobin molecule is bound to an iron atom.
</span>The red blood cells contain a pigment called hemoglobin, each molecule of which binds four oxygen molecules.
This protein carries oxygen to the cells and carbon dioxide to the lungs.
It is the iron atom<span> that binds </span>oxygen<span> as the blood travels between the lungs and the tissues.</span>
A basic source of the confusion is that in the course of evolution whole
suites of genes have apparently been transferred sideways among the
major branches. Among animals, genes are passed vertically from parent
to child but single-celled creatures tend to engulf each other and
occasionally amalgamate into a corporate genetic entity. It has long
been argued that mitochondria, the tiny organelles that handle the
energy metabolism of eukaryotic cells, were once free-living bacteria
that were enslaved by an early eukaryote. Mitochondria still possess
their own, bacteria-like DNA but many of their genes have emigrated into
the eukaryotic cell's own DNA in the nucleus.
Answer:
I can think of only 1 sorry :(
Explanation:
The one that I thought of is cystic fibrosis it a mutation that makes a sticky substance in the lungs and it makes it hard to breathe but you can drink a certain thing that helps the lungs. Bad news: there is no treatment Good news: It is no contagious.
This is considered false. Although the percentage of all air remains the exact same regardless of altitude, it all matters about the air pressure in the atmosphere. Even though the percentage would be the same, there would be fewer oxygen molecules at higher altitudes and lower pressure.
