21. What is contained within the polar body? A. discarded chromosomes B. sperm c
ID: 196775 • Letter: 2
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21. What is contained within the polar body? A. discarded chromosomes B. sperm cells C.corpus luteum D. egg cell E. primary follicle 22. The product(s) of meiosis I in oogenesis is/are A. a primary oocyte. B. a secondary oocyte. C.a polar body. D. 1 primary oocyte and 1 polar body. E. 1 secondary oocyte and I polar body. 23. Which of the following is not a result of estrogen? A. body hair distribution B. fat distribution C. breast development D. milk production E. the uterine cycle 24. which form of birth control is 100% effective? A. abstinence B. natural family planning C. male condom D. birth control pills E. hormone patch 25. In order to be considered infertile, how long must a couple go without achieving pregnancy despi regular unprotected intercourse? A. one year B. six months C. 3 years D. twelve weeks E. thirty 26. What does being overweight have to do with infertility in women? A. Leptin levels are higher which impacts GnRH and FSH. B. The oviducts are blocked. C. Uterine tissue is located outside the uterus causing pain and structural abnormalities. D. Follicles are larger than normal and many mature at one time. E. The uterus is displaced and the zygote has difficulty implanting. 27. Which STD is characterized by a foul-smelling, yellow-green frothy discharge and itching of the vulva/vagina? A. yeast infection B. trichomoniasis C. gonorrhea D. genital warts E. genital herpes 28. The development of a hard chancre (an ulcerated sore with hard edges) is indication of what typ STD? A. hepatitis B. papillomavirus C. syphilis D. yeast infection E. gonorrhea 29. Which of following is not considered an accessory organ of the digestive system? A. liver B. salivary glands C. small intestines D. pancreas E. gallbladder 30. What is the correct order of components of the digestive tract? A. mouth, esophagus, pharynx, small intestine, stomach, large intestine, rectum, and anus B. mouth, pharynx, esophagus, stoma large intestine, small intestine, rectum, and anus C. mouth, pharynx, stomach, esophagus, small intestine, rectum, large intestine, and anus D. mouth, pharynx, esophagus, stomach, small intest large intestine, rectum, and anus E. mouth, rectum, large intestine, small intestine, stomach,Explanation / Answer
Answer 21 - Option D (egg cell) is correct.
Polar bodies are formed during oogenesis. When two haploid cells are formed by meiosis one of the cell become non functional to produce only one egg in the process of oogenesis. The cell which get degenerated is called polar body and as it is formed by meiosis, it is haploid cell. Polar body doesnot able to develop into ova.
Answer 22 - Option E (1 secondary oocyte and 1 polar body) is correct.
Primary oocyte undergo first meiotic division resulting in formation of two haploid cells one is secondary oocyte and other is a polar body.
Answer 23 - Option D (milk production) is correct.
Estrogen only responsible for breast development during puberty. Prolactin is mainly responsible for milk production after child birth.
Answer 24 - Option A (abstinence) is correct.
Abstinence means don't get indulge in particular activity. Here abstinence means sexual abstinence, that means not to indulge in sex. Therefore this method is 100% effective in birth control.
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