Biotech Foundations and History
Defined simply as the combination of biology and technology to create useful products, solve problems, or improve human life.
What is biotechnology?
These small, circular, extrachromosomal double-stranded DNA molecules replicate autonomously and serve as primary cloning vehicles.
What are plasmids?
During the first step of thermal cycling, this high temperature (94°C to 96°C) breaks hydrogen bonds to melt double-stranded DNA into single strands.
What is denaturation?
Standing for Enzyme-Linked Immunosorbent Assay, this diagnostic platform relies on the specific target binding between these two immune components.
What are antigens and antibodies?
This plain-text format is used universally by bioinformatics tools to store nucleotide and protein sequences.
What is the FASTA standard?
Created by Herbert Boyer and Stanley Cohen in 1973, this type of DNA contains spliced sequences from two different sources.
What is recombinant DNA?
Acting as molecular scissors, these bacterial defense enzymes recognize specific palindromic DNA sequences and make targeted cuts.
What are restriction endonucleases (restriction enzymes)?
Derived from thermophilic bacteria, this heat-stable enzyme drives the extension phase of a PCR reaction.
What is Taq polymerase?
In a standard qualitative ELISA test, the chromogenic TMB substrate changes from clear to this color when catalyzed by the enzyme, signaling a positive result.
What is blue?
This AI deep learning system revolutionized structural biology by predicting 3D protein structures directly from primary amino acid sequences.
What is AlphaFold?
Held in 1975, this historic conference established early biosafety guidelines and a temporary pause on genetic engineering research.
What is the Asilomar Conference?
This essential plasmid feature, typically an antibiotic resistance gene like AmpR, ensures that only successfully transformed bacteria survive.
What is a selectable marker?
Because of these repeating chemical groups along their backbones, nucleic acids possess a uniform negative charge that pulls them toward the positive electrode.
What are phosphate groups?
In this specific ELISA setup, capture antibodies coat the well, and a secondary enzyme-linked antibody targets a completely different epitope on the trapped antigen.
What is a Sandwich ELISA?
This specialized pressure chamber uses high-pressure steam (typically 121°C at 15 psi) to sterilize and render biological waste non-infectious.
What is an autoclave?
Invented by Kary Mullis in 1983, this automated thermal cycling process multiplies tiny DNA segments into billions of copies.
What is Polymerase Chain Reaction (PCR)?
Isolated from bacteriophage T4, this enzyme permanently seals DNA nicks by catalyzing covalent phosphodiester bonds using ATP.
What is DNA ligase?
This standardized reference lane containing pre-measured DNA fragments is run alongside samples to build a sizing standard curve.
What is a DNA ladder?
Unlike direct or indirect assays, this specific ELISA variation results in a decrease in final signal intensity when a high concentration of target antigen is present in the sample.
What is Competitive ELISA?
In this biosafety level, agents carry a high individual and low community risk, causing serious or potentially lethal disease via inhalation and requiring negative airflow and HEPA filtration.
What is BSL-3 (Biosafety Level 3)?
Out of the four core principles of bioethics, this principle represents the moral obligation to "do no harm" and minimize risks in scientific protocols.
What is non-maleficence
In blue-white screening, successful insertion of a gene of interest into the Multiple Cloning Site disrupts this specific gene, turning colonies white instead of blue.
What is the lacZ gene?
Acting as a vital cofactor that stabilizes dNTP binding within the PCR matrix, these divalent ions are essential for successful amplification.
What are magnesium ions?
Serving as the standardized structural base of an antibody that is recognized by secondary detection antibodies, this region contrasts with the antigen-binding Fab region.
What is the constant region (or Fc region)?
This detailed, written set of step-by-step instructions documents how to perform a routine or critical laboratory task consistently to ensure quality assurance and reproducibility.
What is a Standard Operating Procedure (SOP)?