Answer:
Correct choice should be:
"SGSG"
Explanation:
The cell cycle consists of G1, S, G2 and M phase. The former three phases include the interphase and M phase is the dividing phase of cell . G1 prepares cell for DNA synthesis. S phase is the phase where DNA replication takes place. G2 phase prepares cell for cell division or M phase.
G1 phase preceeds replication or S phase and G1 phase licences DNA replication.
During other phases of cell cycle, ORC complex masks origin of replication. ORC phosphorylation takes place at S phase, which removes this omplex and unmasks origin of repication site so that replication machinery can bind to it.
DNA helicase activation: S phase
DNA helicase deposition on DNA at the replication origins: G phase (actually G1)
ORC phosphorylation: S phase
Licensing of replication origins : G phase (actually G1)
Hence correct choice should be:
SGSG
Phosphorus is usually a limiting factor or element.
<h3>Is phosphorus a limiting element or factor?</h3>
Phosphorus is usually considered a limiting factor or nutrient in aquatic ecosystems, meaning that the available quantity of this nutrient controls the pace at which algae and aquatic plants are produced.
In other words, phosphorus is a limiting nutrient for aquatic organisms. Its supply is usually small compared to available aquatic organisms.
Thus, Phosphorus is usually a limiting factor or element.
Learn more about phosphorus here: brainly.com/question/1357744
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Since the average osmotic pressure of the brain is 300mM and the concentration of the solution is 280mM, that means there is 20mM difference between the brain cells and CSF. This will induce osmosis and cause water to move from the CSF into the brain until the concentration becomes same. Assuming brain volume is 1200ml and the CSF constantly replaced, then the estimation of fluid should be: 20mM/300mM * 1200ml= 80 mlIf it made percent it should be: 80ml / 1200ml= 6.67%
