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Bio 1 Unit 1
| Question | Answer |
|---|---|
| sharing of pairs of electrons between atoms | covalent bond |
| a proposed explanation for something | hypothesis |
| how the living and nonliving components of the natural environment influence the success (or lack thereof) of a population of organisms | natural selection |
| the passing of traits from the parents to the offspring | descent with modification |
| the change in inheritable characteristics of populations over the generations | theory of evolution |
| Which subatomic particles of an atom most directly influence it’s chemical behavior? | outer electron shell |
| the 4 elements that represent the greatest proportion of a living organism? | oxygen, nitrogen, hydrogen,carbon |
| What characteristic of an element sets it apart from a different type of atom? | number of neutrons |
| variants in a particular chemical element | isotopes |
| attraction of a hydrogen atom and a electronegative atom | hydrogen bond |
| why are hydrogen bonds typically stronger than covalent bonds? | van der waals |
| outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. | covalent bond |
| bonding of 2 electronegative atoms that end up having a equal number of electrons | non polar bond |
| bonding of 2 electronegative atoms that end up have an unequal number of electrons | polar bond |
| the tendency of an atom to attract electrons | electronegativity |
| the resistance to change in temperature and requires energy to change temperature | specific heat of water |
| how is the specific heat of water measured? | Celsius |
| what properties of water allow it to have a high specific heat? | ability to have a high boiling point |
| moderates temperature | evaporation cooling |
| heat required to convert liquid water into gas | heat of vaporization |
| what is cohesive behavior, ability to moderate temp, versatile solvent and the ability to expand when frozen? | emergent properties of water |
| heat required to convert liquid water into gas | heat of vaporization |
| example: water | solvent |
| what is cohesive behavior, ability to moderate temp, versatile solvent and the ability to expand when frozen? | emergent properties of water |
| example: salt | solute |
| example: water | solvent |
| example: water + salt | solution |
| example: salt | solute |
| measures the hydrogen ion concentration of OH- and H+ | pH |
| example: water + salt | solution |
| substance that repels water | hydrophobic |
| measures the hydrogen ion concentration of OH- and H+ | pH |
| substance attracted to water | hydrophilic |
| substance that repels water | hydrophobic |
| substance attracted to water | hydrophilic |
| large hydrophilic molecules that do not dissolve in water | colloid |
| raise the concentration of OH- ions | base |
| raise the concentration of H+ ions | acid |
| autotrophs that can make their own food and fix carbon from atmospheric CO2 | primary producers |
| raise the concentration of OH- ions | base |
| primary producers use inorganic compounds to produce them | organic compound |
| autotrophs that can make their own food and fix carbon from atmospheric CO2 | primary producers |
| organic molecules | hydrocarbon |
| proteins/nucleic acids/carbohydrates/lipids | four main types of organic compound |
| sugars | carbohydrates |
| how are amino acids different? | R groups |
| "short" polymers of amino acids | peptides |
| "long" polymers of amino acids | polypeptides |
| one ore more polypeptides | protein |
| speed up chemical reactions | enzymes |
| store and transmit hereditary information | nucleic acids |
| fatty acid that is liquid at room temperature | unsaturated fatty acid |
Created by:
KAzetapi
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