Answer:
Explanation:
Considering the atmosphere of the primitive earth to have contained water vapor, carbon dioxide, carbon monoxide, methane, and ammonia and/or nitrogen, then in the presence of an energy source, such as sunlight or lightning, a number of small molecules like hydrogen cyanide, HCN, are formed.
The separation of the sister chromatids during the cell division occurs in the anaphase in mitosis and anaphase II in meiosis.
During the anaphase in mitosis, and the anaphase II of the meiosis, the chromosomes aligned at the center of the nucleus separates and the sister chromatids of the chromosomes starts moving towards the opposite poles as the spindle fibers starts contracting.
Well If the Salmon die from lack of food from polution or something, and other animals benafit from the nutrience they carry. the rest of the ecosystem might parish, i hope that helped im not sure what was wanted
Answer:
All of the other answer choices suggest the presence of a multipass transmembrane protein.
Explanation:
The primary sequence contains stretches of polar and nonpolar amino acids, suggesting an amphipathic design.
This one could be, because of the presence of polar an nonpolar aminoacids. The phospholipids membrane have the same construction.
The protein has windows of the primary sequence with positive hydropathy values separated by windows of the primary sequence with negative hydropathy values.
The same here, having pieces of positive and negative hidropathy can be a sign of transmembrane protein.
The protein isolates with the membrane fraction of the cell rather than the cytoplasmic fraction of the cell.
This is discribing you a transmembrane protein
Answer:
<em>The correct option is A) they are all classified as pure substances.</em>
Explanation:
Pure air is a term which is used to described air which is free from pollutants or other contaminants. All the substance from which air is made are considered as pure substances. Hence, option A is correct.
Other options, like option C, is false because the components of the air are no chemically bonded to one another. They exist freely. Options D is false because not all the components of air can be classified as an element. For example, carbon dioxide is not an element.
