A 24-year-old African-American man comes to the emergency room 3 hr after the onset of severe back and chest pain. These problems started while he was skiing. He lives in Los Angeles and had a previous episode of these symptoms 5 years ago while visiting Wyoming. He is in obvious pain. Laboratory studies show the following:

Hemoglobin                                        11 gm/dl

Leukocyte count                                 22,000/μl3

Reticulocyte count                              25%

What is the diagnosis of this patient?

#Question id: 10512

#SCPH05 I Biotechnology

Members of the Poaceae family, which includes all of the cereal crops, use benzoxazinoids alkaloids are derived from,

#Question id: 797

#SCPH05 I Biotechnology

With respect to microRNAs, which, if any, of the following statements, is FALSE?)

A. MicroRNA genes often occur in gene clusters within introns of protein-coding genes and are usually transcribed by RNA polymerase II.

B. Like an mRNA a miRNA is initially produced as a larger precursor RNA that, like the great majority of mRNAs, usually has a 5’ cap and a poly(A) tail.

C. MicroRNAs are produced by germ-line cells only.

D. A miRNA is initially produced as a duplex RNA but in order to work it needs to be converted into a single-strand RNA.

E. MicroRNAs usually work as transcription factors.

#Question id: 3429

#SCPH28 | Zoology

Which of the following is a behavioral pattern that results from a proximate cause?

#Question id: 11557

#SCPH28 | Zoology

Which of the following has both endocrine and exocrine activity?

#Question id: 31

#SCPH28 | Zoology

Which of the following is the pair of enantiomers from the following substance?