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What is the difference between mRNA and pre-mRNA in a eukaryotic cell?

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 transcr...
MY
Answered by Matt Y. • Biology tutor
45173 Views

What is a control in an experiment?

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 the results, often through a comparis...
AP
18280 Views

Describe the changes in the lungs during inspiration

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 out...
DN
Answered by Dhaval N. • Biology tutor
3207 Views

What's the difference between a prokaryote and a eukaryote?

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. Pr...
SK
Answered by Sophia K. • Biology tutor
4057 Views

Why do enzymes only catalyse specific reactions?

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, disu...
JD
Answered by James D. • Biology tutor
3012 Views