Explain why someone with blood type O-negative is called the universal donor

What will be an ideal response?


Type O-negative blood cells do not have A, B, or Rh antigens. Therefore, the antibodies present in the immune system of any recipient should not react.

Biology & Microbiology

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What type of thinking is required?

What will be an ideal response?

Biology & Microbiology

Sporadic cancers ____

a. may develop when proto-oncogenes mutate to form tumor suppressor genes b. may develop when tumor suppressor genes are over-expressed c. are caused by benign tumors d. are cancers that are not inherited e. are less frequent than familial cancers

Biology & Microbiology

Unlike most enveloped viruses, herpes viruses involve the host ________ membrane in the formation of their envelope.

A. nuclear B. plasma C. mitochondrial D. None of the choices are correct.

Biology & Microbiology

Myasthenia gravis is a disease caused by the immune system that attacks the acetylcholine receptors found on muscle cells. What effect would blocking these receptors have on muscle contraction?

What will be an ideal response?

Biology & Microbiology