The enzyme DNA polymerase is responsible for linking the nucleotides in a new DNA strand.
Before replication of DNA occurs, the DNA double helix is first unwound, after which the two strands must be separated much like the two sides of a zipper by breaking the weak hydrogen bonds that link the paired bases.
The unwound DNA strands are held apart to expose the bases so that new nucleotide partner can hydrogen-bond to them. It is DNA polymerase that moves along the exposed strand, joining newly arrived nucleotides into a new DNA strand by linking paired bases by hydrogen bonds.
Answer:
Golgi apparatus and extracellular matrix
Explanation:Golgi apparatus is the site of modification of synthesized protein transported by cisternae migration from the R.ER. Carbohydrate are either added or removed by the Golgi apparatus at this point. The extracellular matrix which contains storage of macromolecules provided the needed structural and support for the modification.
Therefore if the animal cell lacks ability to add polysaccharides to the protein then , the modification organelle-Golgi apparatus must be missing, and the biochemical support structure (extracellular matrix) for the modification must also be missing.
Answer:
Option-E
Explanation:
The phospholipid bilayer is the layer which forms the outer membrane of the cell.
The phospholipid layer is amphipathic as it contains both the hydrophilic and hydrophobic portions.
The phospholipid is composed of the glycerol attached to phosphate groups which form head or hydrophilic region and the 3 fatty acid tails which form the hydrophobic portion.
The head or hydrophilic portion is arranged in the layer facing the outer external portions and the inside of the cytoplasm as the lipid layer exist in the bilayer.
Thus, Option-E is correct.
Answer: 1. Decrease 2. Decrease 3. Both 4. Both 5. Decrease 6. Increase
Explanation: I got it right hopefully it helps