RU 486 is a(n) 

A. "abortion pill."
B. type of contraceptive implant.
C. sexually transmitted disease.
D. sex hormone.


A. "abortion pill."

Biology & Microbiology

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Changes in pre-mRNA processing and the rate at which mRNAs are degraded are a part of ____

a. histone modifications b. chromatin remodeling c. transcriptional regulation d. posttranscriptional regulation e. genomic imprinting

Biology & Microbiology

Which statement best describes an electron transfer chain?

a. It generates energy from carbohydrates. b. It is used by cells to dispose of excess electrons. c. It utilizes ATP to synthesize nutrients. d. It transfers energy, stepwise, from one compound to another. e. It requires activation by oxygen.

Biology & Microbiology

The relationship above is

a. a parasitic association. b. predation. c. resource partitioning. d. a mutualistic association. e. none of these

Biology & Microbiology

The centromere of a chromosome separates during anaphase

Indicate whether the statement is true or false

Biology & Microbiology