What occurs during the follicular phase of the ovarian cycle?
_____ Estradiol is secreted from the cumulus mass.
_____ Progesterone is secreted from the corpus luteum.
_____ The primary oocyte completes meiosis I.
_____ The secondary oocyte begins meiosis II.
_____ The secondary oocyte completes meiosis II.
__X__ Estradiol is secreted from the cumulus mass.
_____ Progesterone is secreted from the corpus luteum.
__X__ The primary oocyte completes meiosis I.
__X__ The secondary oocyte begins meiosis II.
_____ The secondary oocyte completes meiosis II.
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In the mid-twentieth century, researchers discovered that genes are made of ____________________ and that this molecule is part of cellular structures known as ____________________
Fill in the blank(s) with correct word
The stages of meiosis I are virtually the same as the stages of mitosis. The one major difference is ____
a. the homologous chromosomes line up opposite each other during metaphase b. there is no anaphase in meiosis I c. there is no prophase in meiosis I d. the homologous chromosomes line up next to each other during metaphase e. the homologous chromosomes line up at opposite ends of the spindle equator
The retina of the eye responds to light, converting it into electrical impulses. The retina is made up of
A) cartilage. B) bone. C) neurons. D) smooth muscle. E) simple epithelium.
In the chemical sodium chloride, the positively charged sodium and negatively charged chlorine atoms are held together by a(n) _____ bond.
A. ionic
B. covalent
C. hydrogen