Electron Excitation

As previously discussed, atoms have a nucleus made of protons and neutrons surrounded by an electron cloud. An electron cloud is a way to describe where the electrons might be at any one time. Electrons aren’t stuck in certain spot of space relative to the nucleus. Instead, they tend to fill the shape of orbitals, … Continue reading Electron Excitation

Advertisements

Polarity and Bonding

Polar/ nonpolar and bonding: molecules, such as small molecules like water, or large macromolecules like proteins, have properties based on their polarity. Polarity is a spectrum. A molecule can be very nonpolar, or it can be slightly polar, or very polar. Polarity is a concept based on how the electron density exists around each atom … Continue reading Polarity and Bonding

Genetic mutations

The genetic code is replicated during mitosis. If the code is replicated incorrectly, such as a code that should be “AGCT” becomes “ACCT,” by mistake of DNA replication protein machinery, this is called a mutation. There are several types of DNA mutations: Missense mutation: a base pair substitution that causes the amino acid to change. … Continue reading Genetic mutations

Mitosis and Meiosis

Mitosis and meiosis are two similar processes that lead to duplication of the genome and multiplication of cells. Mitosis occurs when a somatic cell (non-sex cells, such as epidermal cells, muscle cells, etc.) divides into two new cells. This happens because our cells need to regenerate because cells have a certain lifetime. Meiosis occurs when … Continue reading Mitosis and Meiosis

DNA→ RNA→Protein

Read below for a written explanation of DNA and protein. Or watch these videos. The top 2 videos is are fun raps, and also a great explanation of how DNA leads to protein. Below that is a visually beautiful and thorough explanation of DNA and protein, but it's a tad dry. https://www.youtube.com/watch?v=d1UPf7lXeO8 https://www.youtube.com/watch?v=T5gEIViVAPw https://www.youtube.com/watch?v=acjAKD-CJ98 DNA: … Continue reading DNA→ RNA→Protein

Elements are everything

Elements are everything Elements are the building blocks of everything, including our DNA and proteins. The elements are represented on the periodic table. Common atoms used in the stuff in our body are carbon, nitrogen, oxygen, and hydrogren. Also used are sulfur, phosphoryus, sodium, chlorine, and magnesium. Elements can build into "stuff" by connecting at the atomic level … Continue reading Elements are everything