Answer
I added 4 and 5 as an attachment due to time constraint.
Explanation:
1. at a steady state ca2+ taken by vesicle = 40n/mol
enclosed volume of CSR = 5μ/mg
concentration of ca2+ in vesicle =
40*10⁻⁶/5x10⁻⁶
= 0.008
= 8x10⁻⁹mol/L
2. radius of circle =75nM
volume = 150nm
volume of vesicle = 4/3 x pi x r³
= 1.33 x 3.14 x (75x10⁻⁹)³
= 1.77 x 10⁻²¹
when we convert this we get
1.77x10⁻¹⁸L since 1m³ is equal to 100oL
surface area =4x3.14x(75x10⁻⁹)²
= 12.56x5.625⁻¹⁵
= 7.065x10⁻¹⁴m²
this is 7.065x10⁻¹⁰cm²
3. number of vesicle/CSR
= 5x10⁻⁶/1.77x10⁻¹⁸
= 2.824x10¹²
surface are = 2.824x10¹² x7.06x10⁻¹⁰
= 19.95x10²
Answer:
Find, collect, label and analyze evidence
Explanation:
The application of science which is used to investigate crime scenes in order to find the correct evidence using different technologies is called forensic science. It plays a very important role in criminal justice and uses various discipline of subjects such as chemistry, physics, biology, computers. etc to find the main suspects in suspense of evidence.
The forensic scientist arrives at the crime scene to look for the evidence and then collect them and take it to the laboratory for further analysis of the evidence with respect to crime scene. So the primary thing that the forensic scientist do to reconstruct a crime and find the culprit is to
find, collect, label and analyse the evidence.
Answer:
Higher heat of evaporation required to break hydrogen bonds
Explanation:
Water molecules are joined together by intermolecular hydrogen bonding. Evaporation of liquid water into water vapor requires extra energy to break these hydrogen bonds to separate the water molecules from each other.
Since a higher heat of evaporation is required, the water molecules absorb the heat from the skin surface or leaf surfaces during perspiration and transpiration respectively. This leaves the cooler skin and leaf surfaces behind. Therefore, the presence of intermolecular hydrogen bonds and the need for extra energy to evaporation water allow it to exhibit a cooling effect.
