Biology exam 1 SCF Dr. Thomas Verified Questions And Answers With Verified Updates

amphipathic molecules - containing hydrophobic and hydrophilic regions. Detergents and phospholipids Levels of complexity - biosphere, ecosystems, communities, populations, organisms, organ systems, tissues, cells, organelles, molecules taxonomic organization - Domain, Kingdom, Phylum, Class, Order, Family, Genes, Species Genomics - the study of whole genomes or total genetic/DNA make up Proteomics - the study of sets of proteins and their properties Hypothesis - Tentative answer to a well framed scientific question Prediction - A logical statement about what will happen if the hypothesis is correct. Conclusion - a judgement based on the information obtained from data collection Theory - well-tested explanation that unifies a broad range of observations. A hypothesis that went through extensive testing. Control Group - the group that does not receive the experimental treatment. experimental group - the group in an experiment that receives the variable being tested Neutron - Largest Mass in the atom, no charge, located in the nucleusProton - quantity is the same as the atomic number, located in the nucleus, positive charge Electron - Orbit the outer layers of the atom, negative charge Element - anything that takes up space with mass that cant be broken down into other things. valence electrons - Outermost electrons, can be found based on elements group, used to find type of bonds needed Octet rule - in forming compounds, atoms tend to achieve the electron configuration of a noble gas meaning they have 8 electrons in the valence level Polar covalent bond - A covalent bond in which electrons are not shared equally Nonpolar covalent bond - a covalent bond in which the electrons are shared equally by the two atoms Double bond - A chemical bond formed when atoms share two pairs of electrons Characteristics of life - order and cells, evolutionary adaption, energy processing, growth and development, response to the environment, regulation, reproduction Electronegativity - A measure of the ability of an atom in a chemical compound to attract electrons hydrogen bond - Attraction between a slightly positive hydrogen atom and a slightly negative atom, weak bond Chemical reaction - the process by which one or more substances change to produce one or more different substancesfree radicals - Highly reactive atoms or molecules with unpaired electrons that result in aging biologically Solvent - the substance in which the solute dissolves Solute - A substance that is dissolved in a solution. Properties of water - cohesion, adhesion, excellent solvent, solid is less dense than liquid, specific heat Acids - substances that release hydrogen ions. 0-6 on pH scale. Proton donors Base - Accepts hydrogen ions. 8-14 on pH scale, lowers H+ concentration, proton acceptor Buffer - compound that prevents sharp, sudden changes in pH