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The major difference between pre-mRNA and mRNA is that pre-mRNA is the immediate product of transcription which is comprised of both exons (coding sequences) and introns (non-coding sequences). After tran...

A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of ...

During inspiration, the intercostal muscles contract, moving the sternum up and out. This increases the thoracic volume, hence decreasing the pressure. The pressure gradient set up causes air inflow from ...

Prokaryotes tend to be single-celled organisms, such as bacteria, and eukaryotes are multicellular organisms like plants, animals and funghi. The two domains are also different at the cellular level, too....

Enzymes are made up of specific amino acid sequences. Bonds form between amino acids in the chain in specific places. Hydrogen bonds form and fold the sequence into a secondary structure. Ionic bonding, d...