Answer: messenger rna ( mRNA )
Explanation: Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts.
Contains the pericardial cavity and surrounds<span> the remaining thoracic organs. ...</span>Houses the spinal cord<span>, the digestive organs, which opens to the exterior at the anus.
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The ridge of a birds breastbone is called a keel
Answer: Cell membrane is layer which is present in all living cells. It is present under the cell wall but in some cases such as plant cells.
Explanation: It is composed of lipid bilayer and proteins embedded in it. Phospholipids, glycolipids and sterols is the composition. Its function is to protect the cell from extracellular environment. It is semipermeable membrane that js allow only selected molecules to pass.
