During the luteal phase leutenizing hormone stimulates a. Ovulation b. Maturatio
ID: 85198 • Letter: D
Question
During the luteal phase leutenizing hormone stimulates a. Ovulation b. Maturation of the primary oocyte c. The graafian follicle to transform into the corpus luteum d. Meiosis II Which of the following moves easily through the phospholipid bilayer, and why? a. Small polar molecules, because the interior of the bilayer is also polar. b. Large polar molecules, because the interior of the bilayer is non-polar; opposites attract! c. Small non-polar molecules, because the interior of the bilayer is also non-polar. d. Water only. Which of the following is true about xylem transport (select all that apply): a. Water potential in the roots is high relative to the tips of the shoots b. Water moves from sources to sinks, and can move in any direction c. Cohesion allows water molecules to cling together in the xylem d. Adhesion is not a factor as xylem is nonpolar The sertoli cells a. Are where sperm are produced b. Nurse the developing sperm c. Are where meiosis occurs d. Produce testosteroneExplanation / Answer
7 ans-a ovulation
During the luteal phase luteinizing hormones and stimulate follicle-stimulating hormone decreased the level which stimulates the ovulation (egg release) in female.Leutal phase is the latter phase of menstrual cycle and last about 14 days(when overy released egg) and before start menstrual cycle.
8 ans-c-small non polar molecules.
Hydrophobic or non polar can cross the lipid bilayer easily for this process no transport protein required.and interior of the lipid bilayer contain hydrophobic(water-hating ) tails.
9 ans-a,c
this situation create water-potential gradient between roots and shoots, adhesion creates a pull at the water-container surface and cohesion (attraction of molecules by the H bonding and meniscus fill the column in the xylem and act as a huge single molecule of water or channel of water)
10 ans-b-nurse the developing sperm
During the spermatogenesis (the process where spermatazoa produced from spermatogonial stem cell by the process of mitosis and meiosis cell divison),the sertoli cell nurse the cell which is activated by the follicle-stimulating hormone (FSH).
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