Answer:
<h3>The genes that caused scales to become feathers in the early ancestors of birds </h3>
Most fish exchange gases using gills<span> on either side of the </span>pharynx<span> (throat). Gills are tissues which consist of threadlike protein structures called </span>filaments. These filaments have many functions including the transfer of ions and water, as well as the exchange of oxygen, carbon dioxide, acids and ammonia.<span>Each filament contains a </span>capillary<span> network that provides a large </span>surface area<span> for exchanging </span>oxygen<span> and </span>carbon dioxide<span>. Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. In some fish, capillary blood flows in the opposite direction to the water, causing </span>countercurrent exchange<span>. The gills push the oxygen-poor water out through openings in the sides of the pharynx. Some fish, like </span>sharks<span> and </span>lampreys<span>, possess multiple gill openings.</span>
Answer:
The correct answer is a. messenger RNA
Explanation:
The plasma membrane mainly contains lipids, proteins, and carbohydrates. Phospholipids make the bilayer of the plasma membrane. Carbohydrates can be found attached to proteins and lipids.
The carbohydrates that are attached to lipids are called phospholipids and those with proteins are called glycoproteins. mRNA is the molecule which is not the part of the plasma membrane. mRNA is produced in the nucleus through the transcription process and is responsible for proteins formation.
So phospholipids, glycolipids, and glycoproteins are the part of the plasma membrane but not messenger RNA.
It is the spinal cord. Signals reach teh spinal cord, and then are transferred to the brain.<span />
A all particlea stop moving then there will be no movement so it will be absolute 0
