Scientists believed that it was HYDROGEN GAS that was used up before the oxygen gas become abundant in the atmosphere. Research shows that, millions of year ago, carbon dioxide was the most abundant gas in the atmosphere and that there is no oxygen at all. As time goes on and the earth mature, oxygen come into existence.
Answer:
Some of these sentences both refer to the same term.
1. The epithelial membrane that lines the closed ventral cavities of the body. - 5. Makes up the pleura and pericardium. This is called the <u>serous membrane</u>.
2. The epithelial membrane that lines body cavities open to the exterior membrane
. - 4. Found lining the digestive and respiratory tracts. These statements refer to the <u>mucous membrane</u>.
3. Consists of keratinized stratified squamous epithelium. - <u>cutaneous membrane</u>.
6. Lines blood vessels and the heart. - <u>endothelium.</u>
Explanation:
All of these membranes are formed by epithelial tissue - one of the four basic tissues found in the human body, with important tasks that many times <u>give the organs they're part of their main function</u>.
<u>The epithelium can vary in shape and size in order to adapt to the necessities of the organ</u>. If the organ needs protection from abrasions, like the skin or the stomach, this tissue will have many layers and be called "<em>stratified epithelium</em>". On the other hand, an organ with the function to exchange substances, like the blood vessels or the alveoli, will have only one layer of epithelium, to ease the diffusion of gases and other molecules.
The other three basic tissues are: connective tissue, muscle tissue, and nervous tissue.
Immediately after pyruvate is brought into the mitochondrion it is transformed into Acetyl-CoA. Acetyl-CoA is necessary for the Krebs cycle to begin, and the Krebs cycle is the next step of cellular respiration. Without pyruvate's transformation, glucose cannot continue the process and be converted into ATP. BOOM i'm awesome
Answer:
Each glucose molecule has 6 C atoms, while each pyruvic acid molecule contains 3 C atoms. As a result, there must be two molecules to hold all six C atoms.
Explanation:
Experiment are special test that are conducted under certain circumstance and can be replicable.
if we cannot replicate it then it is just a test.
experiment should be replicable so it can be done by other people too