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BIOL 1500 Ch. 1-4 Review Flashcards | StudBud
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BIOL 1500 Ch. 1-4 Review
BIOL 1500 Ch. 1-4 Review
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1
Similar traits among organisms are explained by
the directional change in global climate
the accumulation of heritable changes
the way humans interact with the environment
descent from common ancestors
2
Hydrogen bonding gives water properties that help make life possible on Earth
True
False
3
Biology is
the scientific study of life
science concerned with the nature and properties of matter and energy
science dealing with the physical constitution of the earth
science that deals with the identification of the substances
4
Valence electrons are located in
the middle shell
inside the nucleus
the innermost shell
the outermost shell
5
Electronegativity is an atom's attraction for the electrons of a covalent bond
True
False
6
Single bonding with carbon forms
CO2
CO3
CH3
CH4
7
Van der waal interactions occur only when atoms and molecules are extremely far apart
False
True
8
An atom of oxygen has an atomic number of 8. How many electrons are in the first, second, and third electron shells?
0,4,4
2,3,3
2,6,0
8,0,0
9
Gene expression is the process of converting information from cellular to gene product
False
True
10
What are the three domains?
Plants, animals, fungi
Animalia, protists, monera
Bacteria, archaea, eukarya
Plantae, protista, chromista
11
What is the largest level of biological organization?
Communities
Populations
Biosphere
Ecosystems
12
The properites of water that contribute to Earth's suitability for life are
cohesive behavior
expansion upon freezing
ability to moderate temperature
versatility as a solvent
13
The diversity of mammalian limbs results from modification by natural selection over millions of years
False
True
14
Hydrogen bonds are
measurement of the charge separation between atoms in a molecule
when two atoms share electrons equally because the electronegativity
when two atoms share electrons unequally because the electronegativity
a chemical bond created to make macromolecules
15
Hydroxyl group
-N-H-H
-O-H
O=C
O=C-O-H-
16
The three types of isomers are Structural, cis-trans, and enantiomers
False
True
17
A hydrophilic substance is one that does not have an affinity for water
True
False
18
Genes are the units of inheritance that transmit information from parents to offspring
False
True
19
Matter is
anything that takes up space and has mass
substance consisting of two or more elements in a fixed ratio
substances that cannot be broken down by chemical reactions
20
What elements bond with carbon to form a variety of molecules
hydrogen, oxygen, nitrogen, sulfur
argon, silver, gold, helium
lithium, magnesium, potassium, beryllium
21
Ionic bonds involve the
sharing of electrons
transfer of electrons
22
Within polar covalent bonds, electrons are shared
unequally
equally
23
Why are chemical bonds important?
in order to always share electrons with different elements
the formation and function of molecules depends on their bonding
the formation of salt is crucial to the human body
24
The pH scale ranges from
1-7
1-20
7-14
0-14
25
What is the big difference between prokaryotic and eukaryotic cells?
one has membrane-enclosed organelles and the other does not
one relates to land and the other relates to sea
there is no difference
one has DNA and the other does not
26
Carboxyl group
-O-H
O=C
-N-H-H
O=C-O-H-
27
Phosphate group
-CH3
-OPO
-S-H
O=C
28
What is the smallest unit of matter?
compounds
atoms
protons
elements
29
Methyl group
-S-H
-O-H
-CH3
O=C
30
Carbonyl group
-O-H
O=C-O-H-
O=C
-N-H-H
31
When an ionic compound is dissolved in water, each ion is surrounded by a sphere of water molecules called a
electron shell
pasta shell
nucleic shell
hydration shell
32
DNA stands for
deoxymoron acid
ribonucleic acid
deoxytocin acid
deoxyribonucleic acid
33
What makes carbon unique?
it’s ability to form monosaccharides
it’s ability to form little to no substances
it’s ability to form large, complex, and diverse molecules
it’s ability to only form proteins
34
A hypothesis must be
Testable and falsifiable
Proven true
Tried once and never looked at again
35
A solution is
the dissolving agent
the substance that is being dissolved
a liquid that is a homogenous mixture of substances
36
What is an organism's basic unit of structure and function?
An atom
A nucleus
A cell
A molecule
37
Number of neutrons
Atomic mass-mass number
Atomic number-mass number
Mass number+atomic number
Mass number-atomic number
38
Sulfhydryl group
-CH3
O=C-O-H-
-S-H
-N-H-H
39
Isotopes are two atoms of an element with the same amount of neutrons
True
False
40
Radioactive isotopes decay spontaneously, giving off particles and energy
False
True
41
Amino group
-N-H-H
O=C
-O-H
O=C-O-H-
42
Evolution is
the process of survival of the fittest
the process of change that has transformed on earth
the process of studying how animals interact with each other
the process of naming and classifying animals
43
Who created the Theory of Natural Selection?
Charles Darwin
Isaac Newton
Galileo Galilei
Albert Einstein
44
Select all of the subatomic particles
Electrons
Protons
Nucleolus
Neutrons
45
Acids increase the concentration of
NH3
OH-
CH4
H+
46
Isomers are compounds that have the same number of elements, but have different structures
False
True
