Answer:
Average atomic mass = 21.38 amu.
Explanation:
Given data:
Mass of first isotope = 21 amu
Abundance of first isotope = 62%
Mass of second isotope = 22 amu
Abundance of second isotope = 38%
Average atomic mass = ?
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100
Average atomic mass = (62×21)+(38×22) /100
Average atomic mass = 1302 +836 / 100
Average atomic mass = 2138 / 100
Average atomic mass = 21.38 amu.
Here are 3 principles! Hope this helps!!
1 all living organisms are compound by one or more cells
2 the cell is the structure and functional basic unit of life.
3 all cells originated from other cells
There is 23 chromosomes in one gamete
BioSafety Level (BSL) 3 labs,
perform work with indigenous or exotic agents that may cause serious or
potentially lethal diseases through the inhalation exposure. Biological Safety
Levels (BSL) are a sets of protections assigned to the activities that occur in
specific biological laboratories. BSL protects laboratory workers, the
surrounding environment and also the community.
Answer:
C.In the absence of oxygen, creatine phosphate can drive aerobic respiration pathways for a few minutes.
Explanation:
C. In the absence of oxygen, creatine phosphate can drive aerobic respiration pathways for a few minutes.
This statement not true for a following reasons.
Firstly, creatine phosphate directly phosphorylates ATP instead of providing any support for aerobic pathways.
Secondly, creatine phosphate stores are used up in about 15 seconds only. Thirdly, a cell does not need oxygen deficit for creatine phosphate to be activated, it just needs to be short on ATP.
