A Key Problem Faced by Elephants When They Are Swimming

question 93

Multiple Choice

A key problem faced by elephants when they are swimming is

• A) the pressure difference between their blood vessels and the water.
• B) water entering their cells and causing lysis.
• C) water leaving their cells in response to a concentration gradient.
• D) infection by pathogens.
• E) None of the above

---

Definitions:

Transcription

The process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA).

Protein

Large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues essential for the structure, function, and regulation of the body's cells, tissues, and organs.

RNA

Ribonucleic acid, a molecule essential for various biological roles including coding, decoding, regulation, and expression of genes.

DNA

Deoxyribonucleic Acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.