DNA Replication - Biology - Socratic
2018年5月11日 · DNA replication is a fundamental component of biological beings in which genetic material is copied but the genetic code is preserved. This allows traits to be passed to offspring as well as allows for cell growth and regeneration as life continues.
What is the process of DNA replication? + Example - Socratic
2016年8月3日 · DNA replication is semi-conservative. The fundamental unit of DNA consists of 2 intertwined polynucleotide [several nucleotides in a chain] chains or the double helix. The double helix is held together by hydrogen bonds between base pairs. Adenine (A) can only bind to Thymine (T) and Guanine (G) can only bind to Cytosine (C). Because of this specific base …
How does pcr differ from dna replication? + Example - Socratic
2015年5月26日 · Both PCR and in-vivo DNA replication are polymerase chain reactions. Key differences are: Machinery involved : DNA replication is carried out at body temperature (37C in humans) with the help of a complex machinery. for example, helicase unwinds dsDNA, single-strand-binding-proteins stabilize these unwound strands, etc. The PCR reaction utilizes …
Why is DNA replication important? + Example - Socratic
2016年6月1日 · DNA replication allows for organisms to be reproduced from the parent. After a sperm (from male) and egg (from female) cell have combined, they immediately start to divide. At this point, the cell is called a zygote. In order for the cells to divide, they need DNA from the mother. They don't steal it. They just replicate it. For a cell to use DNA, it needs to be in the …
How do regulatory proteins interact with dna? + Example - Socratic
2017年11月17日 · A great example I know is the lac operon located in prokaryotic DNA that dictates whether bacteria in the lower GI tract use lactose or glucose for energy. The lacI area of the DNA constitutively expresses a repressor molecule that negatively controls lacZ and lacY expression by blocking RNA primase from synthesizing RNA in order to break down galactose. …
What is the primer used for DNA replication? - Socratic
2018年7月13日 · A primer is needed to start replication of the lagging strand. In the diagram above, you can see that the leading strand is replicated by the DNA polymerase in a 3'-5' direction. This allows the enzyme to travel along the leading strand right behind the helicase. In fact, DNA polymerase can only travel in a 3'-5' direction. Subsequently, the lagging strand …
What does a start and stop codon do? - Socratic
2016年7月23日 · It signals where translation should start and end. It all has to do with how DNA stores the information to form proteins. A quick overview: DNA are long molecules, you have about 2 to 3 meters in one cell. Only a tiny piece of this DNA is transcribed when a protein has to be produced. So the enzymes that do this have to know where a gene starts and ends, that is …
How is protein synthesis different from DNA replication?
2018年4月11日 · DNA replication is the process in which the DNA is copied before mitosis or meiosis. The results of DNA replication are two identical copies. Protein synthesis occurs in two steps, transcription and translation. Transcription is the process in which segments of DNA (genes) are transcribed into messenger RNA (mRNA) in the cell nucleus.
How is DNA anti-parallel? - Socratic
2016年12月25日 · DNA is double stranded, and the strands are antiparallel because they run in opposite directions. Each DNA molecule has two strands of nucleotides. Each strand has sugar phosphate backbone, but the orientation of the sugar molecule is opposite in the two strands. Both of the strands of DNA double helix can grow in 5' to 3' direction, but they grow in opposite …
Why is virus replication unique? + Example - Socratic
2018年2月25日 · The replication done by a virus allows more mutations which are possibly beneficial to the virus. Citing an example of a retrovirus, which contain single stranded RNA which first convert to DNA and then can then be transcribed to mRNA that will eventually lead to the production of proteins. virus has no metabolic machinenry not any protein so it requires the …