Baker and Bellis developed the kamikaze theory of 
Baker and Bellis developed the kamikaze theory of these cells, which have increased potassium levels during capacitation. During their development, protamines replace histones. These cells are created in the seminiferous [sem-uh-NIF-er-uhs] tubules, and they mature in the epididymis [ep-ih-DID-uh-mis]. An organelle in these haploid cells that is involved in the penetration of the zona pellucida is the acrosome. These cells have at least one flagellum, and they are found in semen. For 10 points, name these male reproductive cells that fuse with an egg to form a zygote.
Baker and Bellis developed the kamikaze theory of these cells, which have increased potassium levels during capacitation.
sperm cells [or spermatozoon; or spermatozoa; or spermatids]