Ch 1: The Science Of Biology

Design theorists – A proponent of the theory that nature shows tangible signs of having been designed by a preexisting intelligence.
Denaturation – A structural change in a protein that results in the loss of its biological properties
Carrier – A person whose genotype includes a gene that is not expressed in the phenotype.
gel electrophoresis – A technique for separating and purifying macromolecules, either DNAs or proteins. A mixture of the macromolecules is placed on a gel between a positively charged electrode and a negatively charged one. Negative charges on the molecules are attracted to the positive electrode, and the molecules migrate toward that electrode. The molecules separate in the gel according to their rates of migration, which is mostly determined by their size.
anticodon – Sequence of three nucleotides (AUCG) that bind to the complimentary codon during translation.
Example: AUG would bind to UAC
Feedbacks – Mechanisms that controls Homeostasis
Radioactive – An atom with an unstable nucleus that spontaneously disintegrates, with the emission of radiation.
palisade mesophyll – tightly packed mesophyll
The visceral layer of Bowman’s capsule is covered with specialized cells called
DNA methylation – The addition of methyl groups to bases of DNA after DNA synthesis; may serve as a long-term control of gene expression.
Sample Size – number of subjects in experiment; bigger better
dipeptide -> amino acid + amino acid. What type of reaction is this? – hydrolysis because water was added to "cut" the dipeptide apart.
cell wall – strong supporting layer around the cell membrane of plant cells
solution – mixture of two or more substances in which the molecules of the substances are evenly distributed
The viscerаl lаyer оf Bоwmаn’s capsule is cоvered with specialized cells called
Vacuole – A membrane-bounded "sac" within a cell
scientific law – A theory that has been tested by and is consistent with generations of data.
solvent – the dissolving substance in a solution
Nucleotides – Monomers of DNA and RNA; composed of a sugar, a phosphate, and a nitrogenous bases

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