Subjectivity is when an element of opinion/bias is introduced. For example, football is the best sport. This depends on the person’s own opinion and varies with each perspective.
Objectivity is when there is no bias/opinion introduced in a statement. This includes statistics and facts.
1. 2. And 4 are all facts.
3. Is an opinion since different people have different favourite flavours of ice cream.
Pre B-cell is getting into checkpoint one, as it possesses a surrogate light chain that is adhered to its recombined heavy chain to make certain that the heavy chain is performing it's necessary duties. Cell is seen to be increasing in size as it undergo division into varying amount of small B-cells.