It is twisted to create a greater surface area for digesting and to increase the nutrient absorption.
Answer:
The correct answer is A DNA is replicated before mitosis begins
Explanation:
DNA replication is one of the most significant event of a cell cycle. .DNA replication occur in the S phase or synthesis phase of the cell cycle.
DNA is replicated once per cycle to maintain to normal chromosome number in daughter cells.
DNA is replicated to form two new DNA molecules which are then equally distributed in each daughter cell during the mitosis phase.
Answer:
Medullary cavity, epiphyses
Explanation:
During the thickening of the bone collar, the penetration of Osteoblasts into the decomposing cartilage occurs thereby replacing it with spongy bone giving rise to a primary ossification center.
Osteoclasts then brings abiut the nreak down of the spongy bone to open up the medullary cavity. The cartilage found in the epiphyses then continue to grow increasing the bone's length.
The binding of sugars are called glycosidic bonds. These bonds are covalent bonds which, by definition, surround the anomeric carbon of a monosaccharide. Contrary to popular belief, the glycosidic bond does not necessarily have to be between two monosaccharides, just think about what happens in nucleotides, for example, where ribose establishes a glycosidic bond with the nitrogen base. Of course, it can also involve two monosaccharides, as is the case with bonds in oligosaccharides or polysaccharides, but this is not required to happen.
When a glycosidic bond is established, a water molecule is released and is therefore a condensation reaction. The oxygen atom and one hydrogen are released from the anomeric carbon, while the second hydrogen atom is released from the atom to which the anomeric carbon will bind.
Glycosidic bonds are also called alpha or beta bonds. This nomenclature depends on the configuration of the anomeric carbon involved in the glycosidic bond. That is, if the anomeric carbon is in the alpha configuration, the bond is of the alpha type, if it is in the beta configuration, the bond is of the beta type.
For greater understanding, please note the image below.
Answer:
Ribosomes are produced by the nucleus. Specifically, the nucleolus.
Explanation: