All of the following statements referring to the uterine cycle are true except a. fsh and lh directly promote development of the uterine endometrium b. the corpus luteum is formed from the ruptured follicle c. after ovulation estrogen is secreted by the developing follicle d. in the follicular phase of the cycle a decrease in the levels of ovarian hormones signals menstruation

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

enjoy!

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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