Answer:
Explanation:
Most (but not all) biological macro molecules are polymers, which are any molecules constructed by linking together many smaller molecules, called monomers. If we were to string many carbohydrate monomers together we could make a polyacrylamide like starch. Proteins can be converted into energy, but your body prefers to use them for more essential jobs. Proteins build and repair every tissue in your body. They’re used to make hormones, enzymes, hemoglobin and antibodies, and they’re responsible for functions such as muscle contraction. The proteins in your body are made from 20 different amino acids. Starch or asylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycogen bonds. This polyacrylamide is produced by most green plants as energy storage.
polymer: A relatively large molecule consisting of a chain or network of many identical or similar monomers chemically bonded to each other.
Answer:
fully oxygenated blood returning to the amphibian heart can undergo additional pumping to reach higher pressures.
Explanation:
Fishes have a two-chambered heart with one atrium and one ventricle. The blood is pumped from the atrium into the ventricle. Ventricle pumps blood into a single circuit of blood vessels. Blood is oxygenated as it passes through capillaries in the gills. As blood circulates through the gill capillaries, it has low blood pressure and therefore, is delivered very slowly to the other organs.
The amphibian heart has two atria and one ventricle. A sinus venosus collects oxygen-poor blood and pumps it into the right atrium. Oxygenated blood from the lungs passes directly into the left atrium. The left atrium pumps the oxygen-rich blood into the arteries that conduct it to the various tissues of the body. Therefore, a three-chambered heart in reptiles allows the delivery of oxygenated blood with high blood pressure.
Answer:
Three nucleotide
Explanation:
Three nucleotides are required to code for one amino acid. There are four types of nucleotides A, T, G, C which make DNA. So a doublet of nucleotide code which involves only two nucleotide would be insufficient to code for 20 amino acids because if 4 different nucleotide is taken two at a time then it can only produce 16 amino acid(4²=16).
But if we take three-nucleotide than the number reaches 64 which is more than sufficient to code for 20 different amino acids(4³= 64). Therefore 3 nucleotides are needed to code for an amino acid.
Doppler effect and redshift as the light coming from stars from the distance can be shifted in the same way as a pitch of sound does
Fragmentation never occur in a unicellular organism !!
