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AP Biology - The Chemistry of Life; Questions & Answers 100% Solved

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AP Biology - The Chemistry of Life; Questions & Answers 100% Solved elements Correct answer-substances that cannot be broken down into simpler substances by chemical means CHNOPS Correct answer-an acronym representing the 6 key elements of life carbon Correct answer-key element of life; maj...

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  • August 8, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ap biology the chemistry of life
  • questions answers 100 solved

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  • AP Biology

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AP Biology - The Chemistry of Life; Questions & Answers
100% Solved
elements Correct answer-substances that cannot be broken down into simpler
substances by chemical means




CHNOPS Correct answer-an acronym representing the 6 key elements of life




carbon Correct answer-key element of life; major component of ALL organic compounds,
including all 4 types of macromolecules (sugars, fats, proteins, and nucleic acids); rarely found
unbound to other elements




hydrogen Correct answer-key element of life, highly involved in the creation of protein
gradients that enable photosynthesis and respiration




nitrogen Correct answer-key element of life, especially prevalent in proteins and nucleic
acids; wastes based on excesses of this element must be excreted by organisms to prevent the
accumulation of toxic ammonia in cells




oxygen Correct answer-key element of life, involved in processes like oxidative
phosphorylation and a major component of many organic compounds; exists in the atmosphere
in molecular form, small enough to permeate most membranes by simple diffusion




phosphorous Correct answer-key element of life; especially important for its role in
phosphate and thus in ATP molecules, which store energy to fuel the majority of cellular work

,AP Biology - The Chemistry of Life; Questions & Answers
100% Solved
sulfur Correct answer-key element of life; especially important in proteins, where
disulfide bridges composed of this element help anchor peptide chains into functional shapes
(tertiary structure)




trace elements Correct answer-elements that are required by organisms in only very
small quantities, such as Fe, Cu, I, etc




atom Correct answer-the smallest unit of an element that retains its characteristic
properties; composed of subatomic particles such as protons, neutrons, and electrons




nucleus Correct answer-the center core of an atom where the protons and neutrons are
concentrated




protons Correct answer-positively charged subatomic particles located in the nucleus of
an atom; constant for all atoms of the same element




neutrons Correct answer-subatomic particles that carry no charge; located in the nucleus
of an atom; number can vary among atoms of the same element, leading to various isotopes
(some of which are unstable, or radioactive, and spontaneously split due to instability)




isotopes Correct answer-atoms of the same element that have different numbers of
neutrons and thus different atomic masses; some are unstable, or radioactive

, AP Biology - The Chemistry of Life; Questions & Answers
100% Solved
electrons Correct answer-negatively charged subatomic particles that orbit the nucleus of
an atom in a region of space called the "electron cloud"




valence electrons Correct answer-the electrons of the outermost energy level of an atom
that determine bonding characteristics




valence Correct answer-the maximum number of bonds that an atom of a particular
element can form; based on the number of valence electrons (8 - ve)




atomic number Correct answer-the number of protons in all atoms of a specific element




mass number Correct answer-the weighted average of the masses of the different
isotopes of an element




atomic mass Correct answer-the mass of an atom of a particular isotope of a particular
element; equal to the number of protons plus the number of neutrons




compound Correct answer-a combination of two or more different types of atoms in a
fixed ratio




chemical reaction Correct answer-the formation or destruction of chemical bonds
between two or more atoms or compounds

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