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Biology Basics: Concept 2 Flashcards | StudBud
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Biology Basics: Concept 2
Biology Basics: Concept 2
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A biology quiz covering scientific method, chemistry in biology, macromolecules, etc.
Flashcards
9 cards
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Practice quiz
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Questions
9
Answers
1
Atoms of elements in the same group of the periodic table share the same
atomic masses
number of energy levels
atomic numbers
number of valence electrons
2
The electrons that are lost, gained, or shared in chemical bonds are called _________.
Chemical electrons
Lewis electrons
Louis electrons
Valence electrons
3
An atom is electrically neutral because...
nuclear forces stabilize the charges
neutrons balance the protons and electrons
the number of protons and neutrons are equal
the number of protons and electrons are equal
4
When placed in water, oil does not dissolve and stays separate. This means oil is ___ and ___.
hydrophilic and polar
hydrophobic and polar
hydrophilic and nonpolar
hydrophobic and nonpolar
5
The most important element
necessary for life
that makes up
EVERY
macromolecule is
Oxygen
Nitrogen
Hydrogen
Carbon
6
The chemical bond formed when two nonmetallic atoms share electrons is called a(n)
James Bond
Ionic Bond
Electron Bond
Covalent Bond
7
The nucleus of an atom has all of the following characteristics
EXCEPT
that it
is very dense
contains nearly all of the atom's volume
is positively charged
contains nearly all of the atom's mass
8
Which particles determine the identity of an element?
Protons only
Neutrons only
Protons and neutrons
Protons and electrons
9
Cations are...
Paws-itive
+
Positive
Negative
