Which best describes oogenesis and spermatogenesis?
a. during oogenesis, the cells become haploid after meiosis i, while in spermatogenesis, the cells become haploid after meiosis ii.
b. in both oogenesis and spermatogenesis, the cells become haploid after meiosis i.
c. in both oogenesis and spermatogenesis, the cells become haploid after meiosis ii.
d. during spermatogenesis, the cells become haploid after meiosis i, while in oogenesis, the cells become haploid after meiosis ii.

Which process must a cell undergo top identical cells at the end of cell division

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.