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Biology Chapter 2 Chemistry and
Molecules of Life Questions and Expert
Answers the Latest Version
Question: homeostasis
Answer: the maintenance of a relatively constant internal environment
Question: energy
Answer: the ability to do work. living organisms obtain energy either directly
from sunlight (through photosynthesis) or from food they consume
Question: metabolism
Answer: all the chemical reactions taking place in the cells of a living
organisms that allow it obtain and use energy
Question: element
Answer: a chemical pure substance that cannot be chemically broken down;
each element is made up of and denied by a single type of atom
Question: matter
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Answer: anything that take up space and has mass
Question: atom
Answer: the smallest unit of an element that cannot be chemically broken
down into smaller units
Question: proton
Answer: a positively charged subatomic particle in the nucleus of an atom
Question: electron
Answer: a negatively charged subatomic particle with negligible mass
Question: neutron
Answer: an electrically uncharged subatomic particle in the nucleus of an
atom
Question: nucleus
Answer: the dense core of an atom
Question: covalent bond
Answer: a strong chemical bond resulting from the sharing of a pair of
electrons between two atoms
Biology Chapter 2 Chemistry and
Molecules of Life Questions and Expert
Answers the Latest Version
Question: homeostasis
Answer: the maintenance of a relatively constant internal environment
Question: energy
Answer: the ability to do work. living organisms obtain energy either directly
from sunlight (through photosynthesis) or from food they consume
Question: metabolism
Answer: all the chemical reactions taking place in the cells of a living
organisms that allow it obtain and use energy
Question: element
Answer: a chemical pure substance that cannot be chemically broken down;
each element is made up of and denied by a single type of atom
Question: matter
, Page | 2
Answer: anything that take up space and has mass
Question: atom
Answer: the smallest unit of an element that cannot be chemically broken
down into smaller units
Question: proton
Answer: a positively charged subatomic particle in the nucleus of an atom
Question: electron
Answer: a negatively charged subatomic particle with negligible mass
Question: neutron
Answer: an electrically uncharged subatomic particle in the nucleus of an
atom
Question: nucleus
Answer: the dense core of an atom
Question: covalent bond
Answer: a strong chemical bond resulting from the sharing of a pair of
electrons between two atoms
