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9 Cards in this Set
- Front
- Back
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In chemical rxns, when atoms gain or lost electrons, they form :
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ions
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When an ionic bond is formed between two atoms, electrons are :
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completely transferred from one atom to the other.
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The biological function of a molecule is most directly related to :
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The shape of the molecule.
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Isotopes differ from each other by their ________.
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number of neutrons
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The bonding between an oxygen atom in 1 molecule of water and hydrogen atoms on other, nearby water mol.in an aqueous solution is best described as:
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hydrogen bonding
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Nitrogen (N) is much more electronegative than hydrogen (H). Therefore, in ammonia (NH ) each hydrogen atom would have what charge?
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A partial positive charge.
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Which type of lipid is most impt. in biological membranes?
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Phospholipids
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Molecules are always moving. Some molecules move faster than others; ______ is a measure of their average velocity of movement.
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temperature
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What includes the idea that all cells come from preexisting cells?
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The Cell Theory
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