Answer:
Explanation:
Membrane fusion is the process by which two different cells get united composing a unique membrane that englobes the content con the two original cells. The final new cell is known as heterokaryon. The cellular membrane has the capability to fuse to other membranes without losing their continuity. This is due to its fluidity, provided by the membrane dynamic and complex components.
For membrane fusion to occur it is necessary that they recognize each other. Fusion proteins favor these processes promoting the cell recognition and the local distortion of the cell membrane. Their surfaces get together and form a lipidic structure between the adjacent membranes which continues to form a fusion pore. This pore will expand until the membranes are completely fused. Bilayer structure breaks locally allowing the outer layer to fuse by their hydrophilic heads, a process known as hemifusion. While this happens, the lipidic hydrophobic extremes of the outer layer of one of the membranes get inserted in the other membrane. After that, hydrophilic tails interact with each other and then the polar heads of the inner layer take place to fuse. Both the bilayers are now fused forming a continuous membrane.
Answer:
d. DNA polymerase begins adding nucleotides at the 5' end of the template
Explanation:
Polymerase DNA always works in one direction, synthesizing the new 5' to 3' oriented chains and adding nucleotides to the 3' end of a new synthesis chain by forming phosphodiester bonds between the phosphate of a nucleotide and the sugar of the anterior nucleotide.
Because DNA polymerase only acts in a 5' to 3' direction, replication along a chain, the leading chain, occurs continuously. The synthesis of the opposite chain, the delayed chain, occurs discontinuously because the DNA polymerase must wait for the replication fork to open. Over the delayed chain, short segments of DNA called Okazaki fragments (named after Reiji and Tsuneko Okazaki, the scientists who discovered these fragments) are synthesized as polymerase DNA works out of the replication fork. Ligase DNA catalyzes the covalent bonds between Okazaki fragments in the delayed chain to ensure there are no gaps in the phosphodiester skeleton. Finally, the first ones are removed and these gaps are filled by the DNA polymerase.
Plants with just one cotyledon are said to be monocotyledons. They also include floral segments that are multiples of three. This implies that their blooms may be made up of sepals instead of petals, or they may have three, six, or nine petals. Additionally, they have accidental roots. These are roots that may sprout from nearly any portion of the plant that comes into touch with the soil, such as the stem.
For instance, garlic plants, spiderwort, etc.
Indeed the answer is C but let me explain why: <span>A weather map is a graphical model that displays the distribution of one or more weather element. That is why the answer is C. Model. I hope this has giving you a clarification</span>
Large cactus finch, vampire finch, mangrove finch, ect. Any Darwin's finch.
