DNA vs. RNA – 5 Key Differences and Comparison
WEBDec 18, 2020 · DNA is a much longer polymer than RNA. A chromosome, for example, is a single, long DNA molecule, which would be several centimetres in length when unraveled. RNA molecules are variable in length, but much shorter than long DNA polymers. A large RNA molecule might only be a few thousand base pairs long. Sugar.
Prokaryotes vs Eukaryotes: What Are the Key Differences?
WEBJul 8, 2021 · The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information. In prokaryotes, DNA is bundled together in the nucleoid region, but it is not stored within a membrane-bound nucleus.
Cation vs Anion: Definition, Chart and the Periodic Table
WEBAug 15, 2019 · Cation vs anion periodic table. It can be possible to predict whether an atom will form a cation or an anion based on its position on the periodic table. Halogens always form anions, alkali metals and alkaline earth metals always form cations. Most other metals form cations (e.g. iron, silver, nickel), whilst most other nonmetals typically form ...
SEM vs TEM - Technology Networks
WEBFeb 25, 2020 · In SEM, the sample, located at the base of the electron column, is scanned and the resulting electron scattering is analyzed to produce an image. In TEM, the sample is placed in the middle of the microscope and electrons pass through the sample before being collected. TEM offers information on ultrathin samples' inner structure, while SEM ...
Agarose Gel Electrophoresis, How It Works and Its Uses
WEBFeb 10, 2022 · Agarose gel electrophoresis is a form of electrophoresis used for the separation of nucleic acid (DNA or RNA) fragments based on their size. Negatively charged DNA/RNA migrates through the pores of an agarose gel towards the positively charged end of the gel when an electrical current is applied, with smaller fragments migrating faster.
An Introduction to Culturing Bacteria - Technology Networks
WEBNov 9, 2021 · Bacteria are an important part of the production of many foods and are broadly split into probiotics and starter cultures. Probiotics are generally cultured for their benefit to human health, 18 often through our gut microbiome. While probiotics may contain many different bacterial species, Lactobacillus and Bifidobacterium are common choices ...
Genotype vs Phenotype: Examples and Definitions
WEBDec 18, 2020 · Understanding the relationship between a genotype and phenotype can be extremely useful in a variety of research areas. A particularly interesting area is pharmacogenomics.Genetic variations can occur in liver enzymes required for drug metabolism, such as CYP450.Therefore, an individual’s phenotype, i.e. their ability to metabolize a specific drug, may vary depending on which form of the ...
Essential Amino Acids: Chart, Abbreviations and Structure
WEBSep 26, 2019 · What is the structure of the amino acids? An amino acid’s structure consists of a central carbon atom attached to a hydrogen, an acidic carboxyl group (−COOH), an amino group (−NH2) and an organic side chain (also called an R group). The side chain is unique in each of the 20 amino acids. Amino acid. Abbreviation.
Cell Culture Basics: Equipment, Fundamentals and Protocols
WEBMay 5, 2021 · Cell culture refers to the removal of cells from an animal or plant and subsequent cultivation in an artificial environment for scientific research. The first cell culture techniques were developed over 100 years ago and since then have contributed to tremendous breakthroughs in science. Today, it is a fundamental tool used in laboratories ...
GC-MS Principle, Instrument and Analyses and GC-MS/MS
WEBJun 10, 2022 · The sample mixture is first separated by the GC before the analyte molecules are eluted into the MS for detection. 1 They are transported by the carrier gas (Figure 1 (1)), which continuously flows through the GC and into the MS, where it is evacuated by the vacuum system (6). 1. The sample is first introduced into the GC manually or by an autosampler (Figure 1 (2)) and enters the carrier gas ...