Earth's<span> magnetic field is mostly caused by electric currents in the liquid outer core, which is composed of conductive, molten iron. Loops of currents in the constantly moving, liquid iron create magnetic fields. From afar, the </span>Earth<span> looks </span>like<span> a big </span>magnet<span> with a north and south pole </span>like<span> any other</span>magnet<span>.</span>
1. DNA unzips in the nucleus.
RNA polymerase binds to the DNA sequence, separates the two strands and creates a single-stranded DNA molecule that will be transcripted.
2. Transcription occurs.
Transcription is the first step of gene expression. During this process, a gene's DNA sequence is copied and a mRNA molecule is produced.
3. mRNA moves to the ribosome
The mRNA is then transferred from the nucleus to the ribosome, the organelle that serves as a site for protein synthesis.
4. Translation occurs
Translation is the process where a mRNA sequence into the amino acid sequence of a polypeptide (protein).
5. Protein assembled at ribosome.
Translation, meaning the formation of a protein, occurs on the ribosome.
If a particle is to large to pass through the cell membrane or use facilitated diffusion, then a cell would need to use active transport