Which of the following hormones is directly responsible for the maintenance of the uterine lining during pregnancy in mammals?

A. Melatonin
B. Oxytocin
C. Progesterone
D. Prolactin
E. FSH (follicle-stimulating hormone)


Ans: C. Progesterone

Biology & Microbiology

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Which of the following are soluble mediators and activators for T lymphocytes and B cells?

A) IL-2 B) IL-4 C) IL-5 D) IL-2, IL-4, and IL-5

Biology & Microbiology

Sarah and two of her brothers have autism. Their parents do not have autism. Scientists perform exome sequencing of the parents and the children to identify mutant genes in the children. Which approach to identifying genes involved in autism is described here?

A) Multiple unrelated affected subjects B) Trio analysis C) Recessive analysis

Biology & Microbiology

The evolution of the blood clotting mechanism is likely explained by ____

a. constant mutations b. direct response to environmental factors c. gene duplication d. sharing of gene pools between species e. inbreeding

Biology & Microbiology

You are worried about your friend Mary, a type 1 diabetic. She is nauseated, short of breath, tired, and confused. She says not to worry because she just has a case of the flu. What diagnostic test should you urge her to perform to make sure that there

is nothing more serious going on? A) stress test for the heart B) blood pressure C) urinary ketones D) blood bilirubin

Biology & Microbiology