Which nucleotide base pairs with together in DNA?

thymine with adenine and cytosine with guanine

What is biosynthesis?

producing larger molecules from smaller molecules

What is a triple bond?

sharing of 6 electrons represented by 3 lines

What are the rungs of the DNA and what is it composed of?

the middle of the "ladder"; nucleotides

What is a single bond?

sharing of 2 electrons represented by 1 line

same number of protons, different neutrons

What is the lock and the key in the lock and key theory of enzyme action?

lock: the enzyme, key: the substrate

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Apologia Biology Module 2 - 3rd edition

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Questions 100

Answers

1
T or F: People and animals make a polysaccharide called starch.
false
true
2
Where on the pH scale can you find neutral?
7 - 14
0 - 7
0-14
7
3
Which nucleotide base pairs with together in DNA?
none of these
thymine with adenine and cytosine with guanine
guanine with thymine adenine with cytosine
cytosine with thymine and guanine with adenine
4
What are the negative particles located around the nucleus of an atom?
neutrons
electrons
protons
elements
5
What is biosynthesis?
producing smaller molecules from small molecules
producing larger molecules from smaller molecules
producing smaller molecules from larger molecules
producing larger molecules from large molecules
6
Why is water called the universal solvent?
it's a liquid at room temperature
all of these
dissolves ionic and other polar substances
dissolves more substances than any other liquid
7
Where are the electrons located?
sitting outside the nucleus
inside the nucleus
all of these
orbiting around the nucleus
8
A positively charged ion has which of the following?
more neutrons than electrons
more protons than neutrons
more electrons than protons
more protons than electrons
9
Which of the following is the correct way to write the symbol for calcium?
ca
cA
CA
Ca
10
What are the basic building blocks of matter?
compounds
mixtures
molecules
atoms
11
What are two different molecules that have the same chemical formula called?
hydrolysis
structural formula
isomers
chemical bonds
12
Water molecules on surface pulled downward into liquid causing thin skin called
cohesion
heat capacity
surface tension
adhesion
13
Atoms with same number of protons belong to the same element.
False
True
14
What DNA strand would connect with the following: AGTACC
CTGCAA
GACGTT
AGTACC
TCATGG
15
What is a triple bond?
sharing of 6 electrons represented by 3 lines
sharing of 4 electrons represented by 2 lines
sharing of 2 electrons represented by 1 line
sharing of 3 electrons represented by 6 lines
16
Properties of molecules are determined by type and number of atoms that link together and the way they link together.
False
True
17
What are the rungs of the DNA and what is it composed of?
the middle of the "ladder"; nucleotides
the middle of the "ladder"; phosphate and sugar
the outside of the "ladder"; nucleotides
the outside of the "ladder"; phosphate and sugar
18
What is responsible for surface tension? What creates the meniscus in water in a graduated cylinder?
cohesion; cohesion
cohesion; adhesion
adhesion; adhesion
adhesion; cohesion
19
What determines the vast majority of an atom's properties?
neutrons
protons
electrons
all of these
20
T or F: Enzymes are a special kind of protein that acts as a catalyst for reactions.
false
true
21
Adhesion and cohesion help water travel from roots to leaves for photosynthesis.
False
True
22
What is a single bond?
sharing of 6 electrons represented by 3 lines
sharing of 4 electrons represented by 2 lines
sharing of 2 electrons represented by 1 line
sharing of 2 electrons represented by 2 lines
23
What are the positive particles located in the nucleus of an atom?
element
protons
neutrons
electrons
24
T or F: The pH scale is used to track the level of an acid or a base.
false
true
25
How many electrons does the first and second energy levels hold?
first: 8; second: 8
first: 2; second: 2
first: 2; second: 8
first: 8; second: 2
26
What are the basic building blocks of proteins?
amino acids
nucleotides
fatty acids
sugars
27
attractive force that holds molecules of different substances together
adhesion
cohesion
surface tension
heat capacity
28
What is it called when one substance dissolves into another?
solution
solvent
diffusion
solute
29
What is the substance being dissolved called?
solvent
solution
solute
mixture
30
The first energy level is closest to the nucleus and has the highest amount of energy.
False
True
31
The vast majority of the properties would be the same for 2 atoms with same number of protons but differing neutrons.
False
True
32
T or F: The electrons are so small they are not included in the atomic mass.
true
false
33
What are the abbreviations for molecules called?
chemical formulas
isotopes
chemical equations
compounds
34
What is a collection of atoms that all have the same number of protons?
molecule
element
compound
mixture
35
Which of the following is a molecule?
all of these
water
oxygen gas
carbon
36
What are carbohydrates that are made up of more than two monosaccharides and what is an example?
trisaccharides, glucose
polysaccharides, starch
disaccharides, fructose
monosaccharides, sucrose
37
What is an isotope?
same number of neutrons, different electrons
same number of protons, different neutrons
same number of protons and neutrons
same number of protons, different electrons
38
Water can hold up to 4x the thermal energy of most metals.
False
True
39
Where on the pH scale can you find an alkaline (base)?
7 - 14
0-14
7
0 - 7
40
What is an example of biosynthesis?
isomers
photosynthesis
cohesion
dehydration
41
How is the periodic table arranged?
all of these
number of neutrons
number of protons
number of electrons
42
T or F: A change in order or type of an amino acid in a protein will not affect function.
false
true
43
What is the catalyst in photosynthesis?
sunlight
carbon dioxide
chlorophyll
oxygen
44
T or F: A chain structure is a structural formula with the elements arranged in a ring.
true
false
45
T or F: All molecules only have 1 structural formula.
true
false
46
What are simple carbohydrates that contain 3-10 carbons called and what is an example?
monosaccharides, fructose
trisaccharides, sucrose
polysaccharides, starch
disaccharides, glucose
47
What are complex molecules formed when 3 fatty acids like to a glycerol?
carbohydrate
acid
lipid
protein
48
What are carbohydrates that are made up of two monosaccharides and what is an example?
monosaccharides, glucose
polysaccharides, glycogen
disaccharides, sucrose
trisaccharides, fructose
49
What is the lock and the key in the lock and key theory of enzyme action?
lock: the substrate, key: the enzyme
lock: the enzyme, key: the substrate
lock: the enzyme and substrate, key: active site
none of these
50
T or F: A catalyst speeds up the reaction and is used up in the process.
false
true
51
T or F: Complex sugars are created by hydrolysis.
false
true
52
What is a chemical reaction in which molecules combine by removing water?
all of these
dehydration reaction
hydrolysis
hydration reaction
53
What has the chemical formula C₆H₁₂O₆and how many atoms of each element are present?
sucrose; C-6, H-6, O-6
carbon hydrogen oxygen; C-6, H-12, O-6
glucose; C-6, H-12, O-6
carbon monoxide; C-6, H-6, O-12
54
What makes up the atomic mass?
electrons
protons and electrons
protons and neutrons
protons
55
There is only one atom present for each element.
False
True
56
What do atoms contain?
electrons
neutrons
all of these
protons
57
What are the neutral particles located in the nucleus of an atom?
protons
elements
neutrons
electrons
58
What are the basic building blocks of DNA?
nucleotides
fatty acids
amino acids
sugars
59
Ionic bond is formed when one or more electrons are transferred from one atom to another
true
false
60
Water is a polar molecule due to uneven sharing of electrons between oxygen and hydrogens.
False
True
61
Electrons fill energy levels from lowest to highest with the outermost doing the reacting and creating a chemical bond.
True
False
62
What is the shape of DNA?
double helix
straight ladder
single helix
straight line
63
How do steroids differ and which of the following are examples?
by type of fused carbon rings; estrogen, testosterone and cholesterol
by type and location of functional group; estrogen and testosterone
by type of functional group; estrogen and cholesterol
by location of functional group; testosterone and cholesterol
64
T or F: Organic bases contain an amine group.
false
true
65
A nucleotide contains which of the following?
phosphate group
all of these
deoxyribose sugar
nucleotide base
66
T or F: The subscript numbers in a molecule tell you how many atoms of that type are there.
false
true
67
An organic molecule contains carbon and which of the following?
any of these
nitrogen
hydrogen and oxygen
sulfur and phosphorus
68
Most atoms are stable so they react with each other to become more unstable.
True
False
69
A negatively charged ion has which of the following?
more protons than electrons
more protons than neutrons
more electrons than protons
more neutrons than electrons
70
Structural formulas give type and number of atoms in a molecule and tells you which atoms are linked together.
false
true
71
What is equal in an atom but not in an ion?
protons and neutrons
protons and electrons
neutrons and electrons
all of these
72
What is a unsaturated fat, where can it be found, and what phase is it in at room temperature?
solid fatty acid in animals with no C double bonds
solid fatty acid in plants with no C double bonds
liquid fatty acid in animals with at least 1 C double bonds
liquid fatty acid in plants with at least 1 C double bonds
73
How are amino acids linked together?
by hydrolysis creating a covalent bond
by hydrolysis creating an ionic bond
by dehydration creating a peptide bond
by dehydration creating a triple bond
74
What is the substance doing the dissolving called?
solute
solvent
concentration
solution
75
Atoms that give up electrons have more protons than electrons and become negatively charged.
False
True
76
Which of the following is an organic molecule?
H2O
CH4
K3PO4
CaCl2
77
Where on the pH scale can you find an acid?
0 - 7
7 - 14
0-14
7
78
T or F: The lines in a chemical formula represent chemical bonds.
true
false
79
What is the backbone of DNA and what is it composed of?
the outside of the "ladder"; phosphate and sugar
the middle of the "ladder"; nucleotides
the outside of the "ladder"; nucleotides
the middle of the "ladder"; phosphate and sugar
80
T or F: The active site on an enzyme is specially shaped for the molecule it reacts with.
false
true
81
T or F: The Bohr model is used to show how the particles are arranged in the atom.
true
false
82
attractive force that holds molecules of same substance together
cohesion
surface tension
heat capacity
adhesion
83
What are chemicals that result from atoms linking together?
molecules
mixtures
elements
compounds
84
Hydrogen bonding causes more space in ice causing less mass in a given volume so ice is more dense than water.
False
True
85
How many protons, neutrons and electrons are in helium-4?
p - 3, n - 1, e - 3
p - 2, n - 2, e - 2
p - 3, n - 1, e - 2
p - 1, n - 3, e - 1
86
What is a double bond?
sharing of 2 electrons represented by 1 line
sharing of 4 electrons represented by 2 lines
sharing of 2 electrons represented by 2 lines
sharing of 6 electrons represented by 3 lines
87
What is known as anything that has mass and takes up space?
molecules
protons
atoms
matter
88
Which particle is the same as the atomic number?
all of these
neutrons
protons
electrons
89
What is the nucleus of the atom?
the center of the atom that contains protons and neutrons
center of atom that contains protons, neutrons & electrons
the center of the atom that contains neutrons and electrons
the center of the atom that contains protons and electrons
90
T or F: Glucose and fructose have the same structural and chemical formulas.
true
false
91
Radioactive isotopes are unstable and used in medicine and research.
True
False
92
Organic acids have which of the following?
-OH
-COOH
-NH3
all of these
93
T or F: Lipids are hydrophobic and can be dissolved in water.
true
false
94
amount of heat energy required to increase temperature
adhesion
heat capacity
cohesion
surface tension
95
What holds the pair of nucleotide bases together?
oxygen bonds
phosphate bonds
hydrogen bonds
nitrogen bonds
96
What is a chemical reaction in which complex molecules are broken down by adding water?
dehydration reaction
all of these
hydrolysis
hydration reaction
97
What is a saturated fat, where can it be found, and what phase is it in at room temperature?
solid fatty acid in animals with no C double bonds
liquid fatty acid in plants with no C double bonds
liquid fatty acid in animals with at least 1 C double bonds
solid fatty acid in plants with at least 1 C double bonds
98
Which of the following are part of all proteins?
primary, secondary and tertiary structure
primary, secondary, tertiary, and quaternary structure
primary structure
primary and secondary structure
99
T or F: A ring structure is a structural formula with the elements arranged in a ring.
true
false
100
What is the function is a protein?
all of these
hair and nails
provide long-term nutrient storage
antibodies that defend you from harmful microorganisms

Apologia Biology Module 2 - 3rd edition Flashcards | StudBud