Answer:
A I'm pretty sure cause t hff sts really the only one that makes sense
The right answer is a surface glycoprotein.
The antigens of the non-self correspond to any substance foreign to the organism, identified as such by the immune system of our organism which produces an energetic defense. Antigens are usually proteins (more specifically glycoproteins) contained in cells or foreign bodies (red blood cells transfused, organs transplanted, bacteria, viruses), or present in the environment (pollen, mite droppings, cat hair , etc.).
Our body has its own antigens that allow it to have a "specific identity card" and will be recognized as foreign by other organizations. They are called "self antigens".
Answer: One difference is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. Another difference is that eukaryotic cells have many membrane-bound organelles while prokaryotic cells have no membrane-bound organelles.
Hope this helps! :)
The third one!
Mitosis makes two identical daughter cells (so both are diploid).
Meiosis makes 4 haploid cells (each with half the chromosomes of the original cells)...these are how the gamete cells (sperm/egg) are made.
There is no answer ,you wrote the answers with the question