Suzanne has type a– blood. which blood type could she receive in a blood transfusion?
a+
o–
o+
b–

The correct answer would be O-

In humans, blood group is mainly determined by ABO and Rh factor.

Blood group A- indicates that Suzanne has antigen A on her red blood cell. In addition, Rh factor antigen is absent in her blood.

So, she can not accept blood which has antigen B and which Rh positive.

Thus, her body can accept blood with blood group A- or O-.  

Blood group O is a universal donor as it does not contain any antigen on red blood cells.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides