BIO 210 Chapter 1-2 Study Guide With Explanations Of Answers.
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Course
BIO 210
Institution
BIO 210
Anything that takes up space is considered to be - correct answer Matter
Nerve impulses involve the flow of an electrical current, a type of energy know as _________ enegry - correct answer Electrical
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Anything that takes up space is considered to be - correct answer Matter
Nerve impulses involve the flow of an electrical current, a type of energy know as _________ enegry -
correct answer Electrical
Atoms that have lost or gained electrons are known as - correct answer Ions
The most abundant element in the human body is - correct answer Oxygen
The atomic number of an atom is equal to the number of _______ an atom contains - correct answer
protons
Compounds that contain carbon-hydrogen bonding are collectively termed________ compounds -
correct answer Organic
Polar molecules like water result when electrons are shared ______ - correct answer
unequally between atoms
An atom's outermost shell is known as its ________ shell. - correct answer
valence
an acid is a molecule that releases (donates) ______ - correct answer protons
(hydrogen ions)
Proteins are synthesized from ________ during synthesis reactions. - correct answer
amino acids
,Glycogen and starch are examples of a specific category of carbohydrates called ________ - correct
answer polysaccharides
A solution with a pH of 11.7is _________ times more basic (alkaline) than a solution with a pH of 8.7 -
correct answer 1000
Unsaturated fatty acid chains contain one or more _____ bonds between carbon atoms - correct answer
double
Enzymes are examples of _________ proteins - correct answer globular
(functional)
The complementary base to adenine in a molecule of DNA is _____ - correct answer
Thymine
A nucleotide of DNA contain three components: - correct answer deoxyribose,
phosphate group, nitrogen-containing base
Elements are composed of building blocks known as - correct answer atoms
The movement of ions across plasma membranes is an example of - correct answer
electrical energy
Water is classified as a/an _______ compound - correct answer inorganic
An atom has lost two electrons. It is known as a/an - correct answer Cation
Increased temperature leads to _______ - correct answer An increase in the
rate of a chemical reaction
Atomic mass is equivalent to the number of _____ in an atom - correct answer
protons and neutrons
, The major function of potassium is to - correct answer play a role in nerve
impulse transmissions and muscle contractions
Iodine is needed to make what? - correct answer Functional thyroid hormones
An atom with an atomic number of 14 will have __________ electrons in its valence shell. - correct
answer 4
An atom with 6 protons, 7 neutrons, and 6 electrons shares four pairs of electrons with four other
atoms. This atom is now considered to be: - correct answer stable
An atom has 6 protons, 8 neutrons, and 6 electrons. Its atomic mass is: - correct answer
14
Atomic number of an atom reveals the number of _____ - correct answer
protons in the atomic nucleus
Isotopes have different numbers of __________; thus they also have different __________. - correct
answer neutrons; atomic masses
A molecule of methane, CH4, is known specifically as a(n) ________. - correct answer
compound
The subatomic particles that are responsible for the chemical behavior of atoms are the_____ - correct
answer Electrons
What type of bond results when electrons are completely transferred from one atom to another -
correct answer ionic bond
The growth of cells and repair of worn-out tissues is accomplished by _____ - correct answer
synthesis reactions
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