Answer:
Actually, in physical cosmology, Big Bang nucleosynthesis (or primordial nucleosynthesis) refers to the production of nuclei other than H-1, the normal, light hydrogen, during the early phases of the universe, shortly after the Big Bang. About first millisecond, the universe had cooled to a few trillion kelvins (1012 K) and quarks finally had the opportunity to bind together into free protons and neutrons. Free neutrons are unstable with a half-life of about ten minutes (614.8 s) and formed in much smaller numbers. The abundance ratio was about seven protons for every neutron. Before one neutron half-life passed nearly every neutron had paired up with a proton, and nearly every one of these pairs had paired up to form helium. By this time the universe had cooled to a few billion kelvins (109 K) and the rate of nucleosynthesis had slowed down significantly.
Explanation:
They don't offer justifications for why they are accurate. They are regarded as established facts.
- A theory essentially means the opposite. A well-supported explanation of a phenomenon in the natural world, including laws, hypotheses, and facts, is called a theory.
- A hypothesis is a statement about the natural world that can be verified by observations or tests. Hypotheses must be falsifiable—that is, they must be formulated in a fashion that allows them to be disproven—and be evaluated scientifically in order to be considered to be true.
- Scientific laws or laws of science are propositions that describe or forecast a variety of natural occurrences and are based on repeated tests or observations.
- Scientific rules condense the findings of tests or observations, typically within a specific applicability range. The accuracy of a law typically does not change when a new theory of the relevant phenomenon is developed; rather, the law's application area expands because the mathematics or statement that represents the law remains constant.
Therefore, scientific laws, theory, and hypothesis are different aspects of Science.
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All redox chemistry of the pyridine nucleotide coenzymes takes place at the 4-position of the pyridine ring.
<h3>What are pyridine nucleotide coenzymes?</h3>
The pyridine nucleotide coenzymes are specific coenzymes responsible for oxide reduction reactions during cellular respiration.
The pyridine nucleotide coenzymes include nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP) and they function by accepting/donating electrons during chemical reactions of the cellular respiration.
In conclusion, all redox chemistry of the pyridine nucleotide coenzymes takes place at the 4-position of the pyridine ring.
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Answer:
so the difference is
Explanation:
While the digestive system collects and removes undigested solids, the excretory system filters compounds from the blood stream and collects them in urine. They are closely connected in controlling the amount of water in your body.
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<u>Answer:</u>
The <u> circulatory </u> system is the main transport system of the human body. it is made up of the heart, blood, and blood vessels namely <u>arteries</u> , <u>veins</u> And <u>capillaries </u> .These vessels bring oxygen-rich blood also Called <u> veins</u> to the different tissues in the body and transport <u> blood </u>from the tissues to the lungs ,in a process called circulation
<u>Explanation: </u>
<u>ABOUT CIRCULATORY SYSTEM -:</u> Blood vessels that carry blood away from and into the heart make up the circulatory system. Blood is carried away from the heart by arteries, and blood is carried back to the heart by veins. Oxygen, nutrients, and hormones are carried to cells by the circulatory system and waste materials, such as carbon dioxide, are extracted.
<u>THREE MAIN BLOOD VESSELS</u> -:
- <u>ARTERIES -:</u> The arteries (red) bring oxygen and nutrients to your body's tissues, away from your heart. The aorta, the large artery leaving the heart, begins with the arteries. They carry blood rich in oxygen away from the heart to all the tissues of the body. As they carry blood further from the heart, they branch several times, becoming smaller and smaller.
- <u>VEINS</u> -: The arteries (red) bring oxygen and nutrients to your body's tissues, away from your heart. These are vessels of the blood that carry back oxygen-poor blood to the heart. When they get closer to the heart, the veins get bigger and bigger. The superior vena cava is a large vein which carries blood from the head and arms into the heart, and the inferior vena cava carries blood from the abdomen and legs into the heart.
- <u>CAPILLARIES -: </u> Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow the passage of oxygen, nutrients , carbon dioxide and waste products from and to the tissue cells.
<u>BLOOD -: </u> Blood circulates through the entire body through a network of vessels to provide oxygen and nutrients to individual cells and helps to dispose of metabolic waste. The blood around the blood vessels pumps the heart. Blood and circulatory processes circulate oxygen and extract carbon dioxide.