I need help can someone answer plz ? What similarities & what differences do you notice between purines and pyrimidines ?

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

How and why organisms are hierarchically classifies

When a doctor suspects that a patient may have diabetes, she will often have the patient take a glucose challenge test. after the patient drinks a large amount of sugary solution, his blood is drawn and the circulating levels of glucose in the blood are determined. which of the following curves do you expect from a patient with diabetes? a. curve ab. curve bc. curve cd. normal curvee. none of the above