Answer:
1. The pathway of a red blood cell from the right ventricle to the brain is:
<em>Right ventricle → pulmonary arteries → lungs → pulmonary veins → left atrium → left ventricle → artery aorta → arterial vessels → brain
.</em>
2. The substance that forms hemoglobin in red blood cells when it passes through the lungs is oxyhemoglobin.
Explanation:
Red blood cells are structures present in the blood, whose function is to transport oxygen (O₂) and carbon dioxide (CO₂). This process requires travel throughout the body, through the blood vessels, and gas exchange at the pulmonary and tissue level.
1. A red blood cell in the right ventricle contains carbon dioxide and must pass to the lungs to be oxygenated. The route it takes from there includes Right ventricle (minor circulation) → pulmonary arteries → lungs → pulmonary veins → left atrium → left ventricle → (joining the major circulation) artery aorta → arterial vessels → brain
.
2. The red blood cell or erythrocyte contains a molecule, called hemoglobin, which has an iron core that allows it to bind to O₂ and CO₂ in order to transport them. The affinity for one molecule or another depends on the presence of a certain gas in a certain place.
When the red blood cell passes through the lungs, the concentration of O₂ is higher than CO₂, so the latter is released and O₂ binds to hemoglobin, a conjugation that is called oxyhemoglobin.
<span>If the density of ice were greater than water, ice would sink to the bottom of oceans/seas/lakes etc. This ice would cool the water so much that more water would freeze, and the entire body of water would soon be a giant block of ice! You can imagine how this would affect aquatic life</span>
Answer:
He is reffering to adaptation over time
Explanation:
There are choices for this question namely:
<span>A) chromosomes.
B) dendrites
C) axon hillocks
D) synaptic axons
</span>
The correct answer is chromosomes. All cells in the human body (except mature red blood cells and platelets, which do not have a nucleus) have chromosomes as genetic information contained inside the nucleus. Dendrites, axon hillocks, and synaptic axons; while true that they microscopic cellular structure, are unique to nerve cells or neurons.
Answer:
Yes that is correct, you can also add that the more Carbon dioxide (a greenhouse gas that traps heat) is pumped in the atmosphere the hotter Earth becomes and the polar caps whose job is supposed to keep earth from overheating will melt and therefore we would be screwed
