1
Which of the following is a particle found in the nucleus of an atom and that has no electrical charge?
2
Matter composed of a single type of atom is know as an ?
3
A stable atom has _________ in its valence shell.
4
Which parts of the atoms interact in a chemical reaction?
5
The outer ring in Figure 2-1 represents
6
The valence of an atom represents its?
ability to interact with other atoms
7
The type of bond produced when atoms share electrons equally is
8
The type of bond produced when atoms with somewhat different electronegativities share electrons is ____
9
Which of the following types of chemical bonds do carbon atoms generally NOT form?
neither ionic nor hydrogen bonds
10
Unstable isotopes can be useful
11
Which of the following is an INCORRECT pairing?
Hydrolysis; hydrogen bonds
12
Compounds that readily dissociate in water are
13
Which of the following is a property of water?
it has a high capacity for heat
14
An acid dissociates in water to release?
both anions and hydrogen ions
15
The reverse of a dehydration synthesis reaction is an ____ reaction.
16
A hydroxyl _____ acts as a base.
17
Which of the following is NOT a characteristic of saturated fats?
They contain at least one double bond.
18
Which of the following is NOT a characteristic of phospholipids?
they contain fatty acids that associate with water
19
Organisms use carbohydrates in all of the following ways EXCEPT
to keep membranes flexible at low temperatures
20
Nucleic acids, proteins, and complex carbohydrates are all produced by?
21
Which of the following is an example of polysaccharide?
22
Which of the following statements about proteins is FALSE?
Their primary function is energy storage
23
All of the following are components of an amino acid EXCEPT
24
Which of the following is found in nucleic acids?
25
Hydrogen Bonds are found in all of the following EXCEPT
between phosphates in ATP
26
Tertiary and quaternary structures of proteins involves _____ bonds.
ionic, hydrogen, polar, and nonpolar covalent
27
Which of the following are examples of pyrimidines?
28
All of the following bases are found in RNA molecules EXCEPT
29
The "backbone" of the DNA molecule is composed of
alternation phosphates and pentoses
30
Which of the following would NOT normally be found as a component of a cells nucleic acids?
uracil deoxyribonucleotides
31
All of the following are associated with ATP molecules EXCEPT
a long term energy supply
32
Which of the following statements concerning nucleic acids is FALSE?
the nucleic acid polymer is composed of peptide bonds
33
Which of the following is an INCORRECT pairing?
secondary structure; disulfide bridges
34
Proteins contain both acidic and basic R groups, and can therefore function as
35
A ____ is a compound that dissolves into anions and cations in water.
36
Plant cell walls are composed of ______ held together by ________ .
polysaccharids; hydrogen bonds
37
A ______ is an arrangement of atoms found in a variety of macromolecules.
38
Decomposition reactions are commonly _____ reactions.
39
Lipids found in the membranes of all eukaryotic cells are _____ .
40
A protein is a _________ of amino acids.
41
DNA is composed of repeating units of sugars, phosphates, and nucleic acids. This is an example of a
42
A polymer composed of a simple sugar is an ____
43
Anna is conducting an experiment using pH indicator that is red at low pH, green at neutral pH and purple at high pH. She starts with a green solution. When she adds compound X to her solution it turns purple. Then she adds compound Z to the solution and it turns green. She adds more Z, the solution remains green. These observations suggest X is ____ & Z is ______ .
44
An amine group is removed from an amino acid and bounded to a second compound to form a different amino acid. No other molecules are uses or produced. What type of reaction is likely to be involved?
The answer cannot be determined for the available information
45
Adenosine triphosphate (ATP) is a
46
Amylose is an ______ carbohydrate
47
Using a microscope you observe an amoeba moving toward a food source. This is an example of
48
Which of the following is NOT a component of bacterial flagella?
49
Which of the following statements concerning the characteristics of life is FALSE?
Reproduction is defined as an increase in the size of an organism
50
Protein synthesis occurs in the ____ ?
51
Which of the following bacterial cell structures plays an important role in the creation of biofilms?
both fimbriae and glycocalyces
52
Short hairlike structures used only by eukaryotic cells for movement are called ?
53
A bacterial cell moving toward light would be an example of
54
Which of the following statements concerning prokaryotic flagella is TRUE?
Prokaryotic flagella are anchored to the cell wall by means of the basal body
55
Which of the following statements concerning pili is FALSE?
Pili are long than fimbriae and flagella
56
Which of the following may be a component of bacterial cell walls?
both lipoteichoic and mycolic acids
57
Bacterial cell walls that are resistant to drying contain:
58
Lipid A is a component of
59
Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival?
60
Lipid soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes?
61
ATP is expended in which of the following processes?
both active transport and group translocation
62
Which of the following statements concerning osmosis is FALSE?
during osmosis, water crosses to the side of the membrane with a lower solute concentration
63
Endospores survive a variety of harsh conditions in part because of the presence of
64
The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT
transfer of genetic material between cells
65
Which of the following is unique to archaea?
66
The cells illustrated in Figure 3-1 are in an _____ environment
67
Which of the following statements concerning endocytosis and exocytosis is TRUE?
Endocytosis produces a structure called a food vesicle
68
A lipid found in prokaryotes but NOT in eukaryotes is ____
69
Which the following statements concerning centrioles is FALSE?
Centrioles are found in all organisms except prokayotes
70
Which of the following is classified as a non membranous organelle of eukaryotic cells?
71
Which of the following is associated with the mitochondria of a eurkaryotic cell
72
Which of the following statements about the endoplasmic reticulum (ER) is correct?
The ER is a transport system within the cytoplasm
73
Which of the following organelles is responsible for producing most of the ATP in a eukaryotic cell?
74
Chloroplasts differ from mitochondria in that the former have
75
Which of the following is paired Incorrectly?
algae; glycocalyx present
76
Which of the following statements concerning the endosymbiotic theory is FALSE?
eukaryotes were formed from the union of small anaerobic cells by larger aerobic cells
77
Which of the following is NOT a function of the eukaryotic cytoskeleton?
packages cellular secretions
78
The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of
79
Which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins?
small hydrophobic molecules only
80
Which of the following processes requires a carrier protein?
both facilitated diffusion and active transport
81
Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria?
82
The cytoplasmic membranes of ______ contain phospholipids and proteins.
both bacterial and eukaryotic cells
83
Membrane rafts are found in the cytoplasmic membranes of ?
84
Endocytosis and exocytosis are means of transport used by
85
Some ____ use group translocation as a means of transport.
86
Hopanoids are found in ____ cytoplasmic membranes.
87
The cell walls of some _____ are composed of proteins.
88
Cytoplasmic membranes of ____ are composed of phospholipids
89
Some members of _____ have hami.
91
Cell walls composed of polysaccharide are found in
archaea and eukaryotes only
92
Which of the following may have cell walls containing teichoic acids?
Gram positive bacteria only