Answer: A protein domain is a region of the protein's polypeptide chain that is self-stabilizing and that folds
independently from the rest. Each domain forms a compact folded three-dimensional structure. Many proteins consist of several domains.
One domain may appear in a variety of different proteins. Molecular evolution uses domains as building blocks and these may be recombined in different arrangements to create proteins with different functions.
In general, domains vary in length from between about 50 amino acids up to 250 amino acids in length.
The shortest domains, such as zinc fingers, are stabilized by metal ions or disulfide bridges. Domains often form functional units, such as the calcium binding EF-hand domain of calmodulin.
Because they are independently stable, domains can be "swapped" by genetic engineering between one protein and another to make chimeric proteins.
Most mutations have no effect on organisms. Organisms all have large amounts of genetic code, most of which has no effect. As a result, mutation of this code is rarely meaningful.
Solar eclipses result from the Moon blocking the Sun relative to the Earth; thus Earth, Moon and Sun all lie on a line. Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.
Answer: 1) Organism X is positively affected by the relationship and organism Y is negatively affected
Explanation: the predator eats the prey, so the predator benefits but the prey is killed. parasites are heterotrophic organisms that live on or in another living thing and do harm to it while they themselves benefit. <3
Answer:
Option D, a research paper published in an academic journal and an approved PhD dissertation
Explanation:
Nicholas must present her discovery with back up of strong literature review. This literature review must include papers published in good journals and only approved research dissertation.
An internet blog, news article and college level textbook are not considered as an approved study. These are not reviewed or approved by any peer group or associations.
Good papers of any good journals are reviewed and examined thoroughly by the peers and thus they can be used as a backup of any study.
Hence, option D is correct
