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

The blood sample has only antigen B on the red blood cells and antibody A in the plasma. This indicates that the blood group type is B.

The negative and the positive sign of the blood group is determined by looking at the presence of another antigen called the Rhesus factor or RhD factor. The presence of RhD antigen in RBC is denoted by a '+' sign next to the blood group.

Since the question does not mention about the presence of RhD factor, the blood can be either B+ or B-.

chlorophyll a: this is the most abundant pigment in plants. chlorophyll a absorbs light with wavelengths of 430nm(blue) and 662nm(red). it reflects green light strongly so it appears green to us.

the speed increase from w to x due to increased gravity force

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