A molecular biologist measures the mass of cofactor a in an average yeast cell. the mass is 41.5 pg . what is the total mass in
micrograms of cofactor a in a yeast colony containing 105 cells? write your answer as a decimal.
2 answers:
The total mass in micrograms of the cofactor in a yeast colony containing 105 cells = 4357.5. 10 ^ -6 microgram = 0.004357.5 microgram
<h3><em>Further explanation</em></h3>The principal is based on the agreement of scientists
The derivative magnitude is a quantity derived from the principal amount
7 main quantities have been determined based on international standards, namely:
1. Length, meters (m)
2. Time, second (s)
3. Mass, kilograms (kg)
4. Temperature, kelvin (K)
5. Light intensity, candela (cd)
6. Electric current, ampere (A)
7. Amount of substance, mol (m)
Mass is one of the principal quantities, which is related to the matter in the object
The main mass unit consists of 7 units of other than other units of mass such as quintals, tons, pounds, ounces:
- Kilogram, kg
- Hectogram, hg
- Decagram, dag
- gram, g
- Decigram, dg
- centigram, cg
- milligram, mg
Each unit descends then multiplied by 10, and if one unit increases then divided by 10
Conversion of other mass units:
10⁻³ g mg milligrams
10³ g kg of kilograms
10⁻⁶ g µg micrograms (mcg)
10⁶ g Mg megagrams (tons)
10⁻⁹ ng nanograms
10⁹ g Gg gigagram
10⁻¹² g pg pikogram
In the problem, the mass of cofactor a in average yeast cell is 41.5 pg
So that, when converted to microgram (μ), becomes:
41.5 .10⁻⁶ μg
For 105 cells, the cofactor mass becomes:
41.5 .10⁻⁶ x 105 = 4357.5. 10⁻⁶ micrograms (μg)
<h3><em>Learn more</em></h3>Convert the following metric units of weight
conversion factor
convert a mass of 2,93 pounds to ounces
Keywords: mass, convert, cofactor, cell
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Hope this helps you.
Answer:
A scandium-48 nucleus undergoes beta-minus decay to produce a titanium-48 nucleus.
.
Explanation:
There are two types of beta decay modes: beta-minus and beta-plus.
In both decay modes, the mass number of the nucleus stays the same.
However, in a beta-minus decay, the atomic number of the nucleus increases by one. In a beta-plus decay, the atomic number decreases by one.
Each beta-minus decay releases one electron and one electron antineutrino. Each beta-plus decay releases one positron and one electron neutrino.
Look up the atomic number and relative atomic mass for the element scandium.
- The atomic number of
is
.
- The relative atomic mass of
.
This question did not specify whether the decay here is beta-plus or a beta-minus. However, the relative atomic mass of this element can give a rough estimate of the mode of decay.
Each element (e.g, ) can have multiple isotopes. These isotopes differ in mass. The relative atomic mass of an element is an average across all isotopes of this element. This mass is weighted based on the relative abundance of the isotopes. Its value should be closest to the most stable (and hence the most abundant) isotope.
The mass number of scandium-48 is significantly larger than the relative atomic mass of this element. In other words, this isotope contains more neutrons than isotopes that are more stable. There's a tendency for that neutron to convert to a proton- by beta-minus decay, for example.
The atomic number of the nucleus will increase by 1. . That corresponds to titanium. The mass number stays the same at
. Hence the daughter nucleus would be titanium-48. Note that two other particles: one electron and one electron
and one antineutrino
(note the bar.) The neutrino helps balance the lepton number of this reaction.