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Is it true formation of multiple replication forks tends to slow down DNA replication?
No, the whole point in forming multiple replication forks is to reduce the time it takes to replicated DNA by replicating several sections of DNA at the same time, so that each polymerase enzyme has to copy less of the DNA. As a result replication finishes earlier than it would if one polymerase were to replicate the entire strand (as it would operate at the same speed - about 1000 base pairs per second). The human genome has about 20,000 origins for replication, which will produce 20,000 replication forks. It is necessary to have this many because the human genome is so large (3.3 billion base pairs). Without 20,000 origins, DNA replication would take close to 20,000 times longer.
What is the biological function?
Lipase is a enzyme used to cleave lipids, usually membrane lipids. Phosolipase C is a power second messenger used in intercell signaling. Lipase is a enzyme used to cleave lipids, usually membrane lipids. Phosolipase C is a power second messenger used in intercell signaling.
Is it true that Replication occurs simultaneously at many points on a DNA molecule?
Yes it is. The eukaryotic DNA polymerase works much slower than the prokaryotic DNA polymerase, working at around 50 bases per second. With as many as 80 million bases to replicate the job is achieved in about one hour by having many replication forks. The simple answer: It's quicker.
Where is the substrate that binds to an enzyme?
Well, honey, the substrate that binds to an enzyme does its little dance right in the enzyme's active site. It's like a lock and key situation - the substrate waltzes in, fits perfectly into the active site, and the enzyme gets to work doing its magic. Just remember, it's all about that perfect fit for things to get cookin' in the world of enzymes.
What percentage of DNA will be radioactive after 3 DNA replication cycles?
After 3 replication cycles, 87.5% of the DNA will be radioactive. Each cycle doubles the amount of DNA, so after the first cycle, 50% will be radioactive, after the second cycle, 75% will be radioactive, and after the third cycle, 87.5% will be radioactive.
How many substrate molecules does a typical enzyme act on per second?
A single enzyme molecule can act on about 1000 substrate molecules per second.
When does replication in a cell take place?
replication in the cell take place in the second phase which is the metaphase.
DNA replication is also called?
DNA replication is the second part of inter-phase where the cell makes an exact copy of the DNA in its cell. Please see the answer to the related question below..
What is the 2nd step of DNA replication?
The 2nd step of DNA replication is initiation, where the double helix unwinds and the DNA strands are separated by an enzyme called helicase. This forms the replication fork where new DNA strands will be synthesized.
In what part of the cell cycle does replication occur?
DNA replication occurs during Interphase. This is not normally part of the cell division cycle but interphase must occur before subsequent stages such as prophase and metaphase can occur.
What do you call the process when DNA zips itself and makes a second copy?
replication
What is the role of ubiquinone in the electron transport chain?
Ubiquinone carries electrons from the first enzyme complex to the second enzyme complex
How many nucleotides do humans get per second?
DNA replication in humans occurs at a rate of ______ nucleotides per second.
Is it true formation of multiple replication forks tends to slow down DNA replication?
No, the whole point in forming multiple replication forks is to reduce the time it takes to replicated DNA by replicating several sections of DNA at the same time, so that each polymerase enzyme has to copy less of the DNA. As a result replication finishes earlier than it would if one polymerase were to replicate the entire strand (as it would operate at the same speed - about 1000 base pairs per second). The human genome has about 20,000 origins for replication, which will produce 20,000 replication forks. It is necessary to have this many because the human genome is so large (3.3 billion base pairs). Without 20,000 origins, DNA replication would take close to 20,000 times longer.
What is the period of time between the first and second meiotic divisions?
The period of time between the first and second meiotic divisions is known as interkinesis. Interkinesis is a brief interphase that occurs between the two meiotic divisions in which DNA replication does not occur.
What are the units of the catalytic efficiency constant, kcat, in enzyme kinetics?
The units of the catalytic efficiency constant, kcat, in enzyme kinetics are per second (s-1).
Why must animal use more energy to produce a second enzyme?
because there are animals
