Which of the following statements is not true about gamete formation in mammals? a. only one of the four cells resulting from meiosis goes on to become an oocyte. b. in the female, the separation of cytoplasm is unequal during meiosis. c. the polar bodies formed during meiosis in the female can participate in fertilization with sperm. d. only one of the four cells resulting from meiosis goes on to become an egg, which becomes a zygote upon fertilization by a sperm cell. e. the cytoplasm is diminished during development of sperm, and a flagellum is formed to give sperm locomotion.

Which of the following is a common danger of commercial fishing?

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.

Name the organs of humanelemintary canal.