Clicker Qs Flashcards
Low pH is most important in the:
A) upper uterine tube B) lower uterine tube C) uterine cavity D) cervix E) vagina
E
During the menstrual cycle a sharp spike in plasma levels of which of the following hormone just before ovulation is responsible for ovulation?
A) FSH B) LH C) estrogen D) progesterone E) estradiol-17-beta
B
Transcription if which of the following genes is required to permit cleavage to proceed to the 2-cell stage in mammalian embryos?
A) Nanog
B) 4-Oct
C) Cdx-2
D) Sox-2
B
The principal energy source for ejaculated spermatozoa is:
A) prostatic acid phosphatase B) internal glucose C) prostatic citric acid D) fructose in seminal vesicle fluid E) glycogen released from the vaginal epithelium
D
Which of the following cells. Are. Responsible for the production of testosterone in the testes?
A) Sertoli cells
B) leydig cells
C) granulosa cells
D) spermatogial cells
B
What components of the Graafian follicle form the corpus luteum?
A) granulosa cells
B) thecal cells
C) corona radiate cells
D) both granulosa and thecal cells
D
In mammalian embryos most transcription via the embryonic genome occurs as early as which of the following stages?
A) zygote
B) 4 cell stage
C) blastula
D) gastrula
B
Which of the following gene catergories are mRNAs derived from the maternal genome rather than the embryonic genome?
A) pair rule genes
B) homeotic genes
C) egg polarity genes
D) gap genes
C
Which of the following is a transcription factor?
A) FGF B) Pax C) TGT D) Notch E) Wnt
B
Zinc fingers or helix loop helix arrangements are characteristic of members of what class of molecule?
A) Proto-oncogenes B) signaling molecules C) receptors D) transcription factors E) none of the above
D
Shh is produced in which signaling center?
A) notochord B) intestinal portals C) floor plate of neural tube D) zone of polarizing activity in limb bud E) all of the above
E
