An organism that lives in a deep marine environment may exhibit all the following physical characteristics, except

A) large eyes.
B) bioluminescence.
C) colorful skin pigmentation.
D) streamlined body.


C

Biology & Microbiology

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With humans making up such a small percentage of life on Earth, which of the following represents the rationale behind spending a disproportionate amount of scientific research studying humans?

A. Humans are interested in learning how their own bodies function. B. Our role in the ecosystem needs to be understood in order to plan for our future. C. The more that is discovered about humans, the more likely it is that disease can be combatted. D. Humans are curious about their origins. E. All of the above are reasons for spending a disproportionate amount of scientific research studying humans.

Biology & Microbiology

How can microarrays help us understand cellular functions?

a. Microarrays let us study different cells under different conditions. b. Microarrays let us directly measure protein expression in individual cells. c. Microarrays, by hybridizing cDNAs to DNA sequences already present on a chip, let us identify which portions of a genome were being expressed in a cell at a particular time. d. Microarrays let us identify which DNA sequences are present in a particular cell type under certain conditions. e. Microarrays, by hybridizing DNA to cDNA sequences already present on a chip, let us identify which portions of a genome were being expressed in a cell at a particular time.

Biology & Microbiology

Which of the following does not occur in both prokaryotes and eukaryotes?

A. There is DNA transcription. B. There is alternative splicing of genes. C. tRNA carries the amino acid to the mRNA to make polypeptides. D. In RNA, uracil replaces thymine. E. Translation occurs on a ribosome.

Biology & Microbiology

The human genome sequence was reported in 2003 by two groups, the publicly funded ________ and ________

Fill in the blank(s) with correct word

Biology & Microbiology