Approximately how often does a period of REM sleep occur?

a. every 30 minutes
b. every 60 minutes
c. every 90 minutes
d. every 120 minutes
e. once per night


C

Biology & Microbiology

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Extensive horizontal gene transfer between domains greatly simplifies the construction of phylogenetic trees.

Answer the following statement true (T) or false (F)

Biology & Microbiology

In June 2001 an announcement was made that a draft sequence of the ____________________ nucleotides in the human genome had been finished

a. 350 million b. 990 million c. 1.1 billion d. 3.2 billion e. 56 billion

Biology & Microbiology

If the nucleotide sequence of one strand of DNA is helix is 5'GCCTAA3', what would be the 3'-5' sequence on the complementary strand?

A. GCCTAA b. CGGAUU c. CGGATT d. ATTCGG e. TAAGCC

Biology & Microbiology

Which of the following organisms causes "red tides" and extensive fish kills?

a) amoeba b) ulva c) diatoms d) plasmodium e) dinoflagellates

Biology & Microbiology