WAEC Biology 2022 Objective — Question 44
Question 44 of 50 from the West African Examinations Council (WAEC) Biology 2022 Objective paper, with the correct answer and a full explanation.
Advertisement
Individuals belonging to blood group O are universal donors because
- A. antigens are absent in their blood cellsCorrect
- B. members of the group constitute the highest number of humans
- C. there are no antibodies in their blood plasma
- D. the antigens of the blood cells are easily destroyed
Explanation
Blood group O red blood cells lack A and B antigens, meaning they won't trigger an immune (antigen-antibody) reaction in recipients of any blood type, making group O individuals universal donors.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.