Jesse is studying a blood sample that has only antigen b on the red blood cells and antibody a in the plasma. what is the type of the blood sample? a+ a– b+ b–

Option: B+

Explanation:

The test to determine a blood group is called ABO typing. The blood sample is mixed with antibodies against type A and B blood. Then, the sample is checked whether or not the blood cells stick together. If blood cells stick together, it means the blood reacted with one of the antibodies.

B+ blood group:

A blood sample that has only antigen B on the red blood cells and antibody A in the plasma lies under B+ blood group.

B+ blood type means the person has antigen B and rhesus factor on RBC and could be able to receive blood from another B+ donor.

Please note:

As only antigen B is mentioned that is why we will consider B+ BLOOD group. Because negative antigen is not mentioned in the question and when there is no sign is mentioned we will consider it positive.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.