Which is false about Rapid Eye Movement (REM) sleep?

-It is the last sleep state in the adult's 90 minute sleep cycle
-One's EEG shows brain activity similar to wakefulness
-The amount of REM sleep that takes place in a 90 minute sleep cycle remains constant throughout the night (meaning that in each stage, 20% of sleep is REM)
-Most dreaming activity is associated with this stage


The amount of REM sleep that takes place in a 90 minute sleep cycle remains constant throughout the night (meaning that in each stage, ~20% of sleep is REM)

Biology & Microbiology

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Mutations are _____________.

A.usually weeded out of a population. B.usually neutral. C.usually beneficial. D.necessary for evolution. E.usually detrimental.

Biology & Microbiology

The placement of the amino acid during translation is determined by the

A. DNase, which transcribes both molecules. B. complementarity of the codon-anticodon. C. sequence of nucleotides at the 5' end of the tRNA. D. secondary structure of the newly forming protein.

Biology & Microbiology

How does scientific information in peer-reviewed journals differ from that in newspapers?

A) Information is more technical; readers usually require a background in the field in order to understand the article. B) The article is written by a reporter, not a researcher. C) Articles often include political, ethical, and economic ramifications of the scientific findings. D) Information is less in-depth and easily understood by the average reader. E) Information is not approved by other scientists before its publication.

Biology & Microbiology

On a scientific expedition into new territory, you discover a previously undescribed organism living within the very

hot environment of a geyser. This organism has a cell wall, is single celled, heterotrophic, and has no true nucleus. In what kingdom would you most likely place this organism and why? What will be an ideal response?

Biology & Microbiology