Some bacteria are metabolically active in hot springs because

their enzymes have high optimal temperatures.

Which of the following factors would tend to increase membrane fluidity?

a greater proportion of unsaturated phospholipids

In the term trace element, the adjective trace means that

the element is required in very small amounts

When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?

The pH of the matrix increases.

Which statement is true of all atoms that are anions?

The atom has more electrons than protons.

Which of the following is an example of qualitative data?

The fish swam in a zigzag motion.

Most cells cannot harness heat to perform work because

temperature is usually uniform throughout a cell.

Which of following is a correct sequence of levels in life's hierarchy, downward from individua

nervous system, brain, nervous tissue, nerve cell

In what way do the membranes of a eukaryotic cell vary?

Certain proteins are unique to each membrane.

Which of the following best demonstrates the unity among all organisms?

the structure & function of DNA

Organic chemistry is currently defined as

the study of compounds made only by living cells.

The reactivity of an atom arises from

the existence of unpaired electrons in the valence shell

Systems biology is mainly an attempt to

understand behavior of entire biol systems by studying parts

Protists & bacteria are grouped into different domains because

protists have a membrane-bounded nucleus.

Which of following is NOT an observation/inference on which Darwin's theory of nat sel is based

Poorly adapted individuals never produce offspring.

Which of the following is true of UNSATURATED fats?

They have double bonds in carbon chains of their fatty acids

Which structure-function pair is MISMATCHED?

microtubule; muscle contraction

A controlled experiment is one that

tests experimental & control groups in parallel

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AP Exam Review Part I - Chapters 1 through 11

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Questions 37

Answers

1
Which structure is common to plant AND animal cells?
centriole
chloroplast
central vacuole
mitochondrion
2
Some bacteria are metabolically active in hot springs because
they are able to maintain a lower internal temperature.
their enzymes have high optimal temperatures.
high temperatures make catalysis unnecessary.
their enzymes are completely insensitive to temperature.
3
The structural level of protein LEAST affected by a disruption in hydrogen bonding is the...
tertiary level.
quaternary level.
secondary level.
primary level.
4
Which of the following factors would tend to increase membrane fluidity?
a greater proportion of saturated phospholipids
a relatively high protein content in the membrane
a lower temperature
a greater proportion of unsaturated phospholipids
5
In the term trace element, the adjective trace means that
element enhances health but is not essential for long surv
the element is required in very small amounts
element can be used as label to trace atoms throu an org met
the element is very rare on Earth
6
When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?
The pH of the matrix increases.
The electrons gain free energy.
ATP synthase pumps protons by active transport.
NAD+ is oxidized.
7
Which statement is true of all atoms that are anions?
atom has fewer protons than does a neutral atom of same elem
The atom has more protons than electrons.
The atom has more electrons than protons.
The atom has more neutrons than protons.
8
Which of the following is an example of qualitative data?
The fish swam in a zigzag motion.
The contents of the stomach are mixed every 20 seconds.
The temperature decreased form 20o C to 15o C
The six pairs of robins hatched an average of three chicks.
9
Compared with ³¹P, the radioactive isotope ³²P has
one more proton.
a different atomic number.
one more neutron.
one more electron.
10
Most cells cannot harness heat to perform work because
cells do not have much thermal energy-they r relatively cool
heat can never be used to do work.
temperature is usually uniform throughout a cell.
heat does not involve a transfer of energy.
11
Which of following is a correct sequence of levels in life's hierarchy, downward from individua
organism, organism, organ system, tissue, cell organ
nervous system, brain, nervous tissue, nerve cell
organ system, nervous tissue, brain, nerve cell
organism, brain, organ system, nerve cell
12
In what way do the membranes of a eukaryotic cell vary?
Only certain membranes of the cell are selectively permeable
Certain proteins are unique to each membrane.
Phospholipids are found only in certain membranes.
Only certain memb are constructed from amphipathic molecules
13
Which structure is NOT part of the endomembrane system?
chloroplast
nuclear envelope
plasma membrane
Golgi apparatus
14
Which of following pairs of base sequences could form a short stretch of a normal double helix?
5'-AGCT-3' with 5'-TCGA-3'
All of these pairs are correct.
5'-ATGC-3' with 5'GCAT-3'
5'-GCGC-3' with 5'TATA-3'
15
Which of the following best demonstrates the unity among all organisms?
emergent properties
the structure & function of DNA
descent with modification
natural selection
16
Choose pair of terms that correctly completes this sentenceCatabolism is to anabolism as_is to_
exergonic; endergonic
work; energy
exergonic; spontaneous
free energy; entropy
17
Organic chemistry is currently defined as
the study of carbon compounds.
the study of compounds made only by living cells.
the study of natural (as opposed to synthetic) compounds.
the study of hydrocarbons.
18
Which of the following is a hydrophobic material?
table salt
sugar
wax
paper
19
The reactivity of an atom arises from
the existence of unpaired electrons in the valence shell
the sum of the potential energies of all the electron shells
the potential energy of the valence shell.
average distance of outermost electron shell from th nucleus
20
Which of the following is present in a prokaryotic cell?
mitochondrion
ribosome
chloroplast
nuclear envelope
21
What is the hydroxide concentration (OH-) of the lake described in previous questions?
10.0 M
10-10 M
10-4 M
10-7 M
22
Which cell would be best for studying lysosomes?
nerve cell
muscle cell
phagocytic white blood cell
bacterial cell
23
Systems biology is mainly an attempt to
understand behavior of entire biol systems by studying parts
simplify complex problems by reducing the system into smalle
analyze genomes from different species.
build high-throughput machines for rapid acquisi of bio data
24
Protists & bacteria are grouped into different domains because
protists are photosynthetic.
protists eat bacteria.
protists have a membrane-bounded nucleus.
bacteria are not made of cells.
25
We can represent atoms by listing the number of protons, neutrons, & electrons. Which repr ¹⁸O?
7p+, 2n0, 9e-
10p+, 8n0, 9e-
9p+, 9n0, 9e-
8p+, 10n0, 8e-
26
All the organisms on your campus make up...
an ecosystem.
a taxonomic domain.
a population.
a community.
27
Which of following is NOT an observation/inference on which Darwin's theory of nat sel is based
Bcause of overproduction is competition for limited resource
Poorly adapted individuals never produce offspring.
There is heritable variation among individuals.
A population can become adapted to its environment over time
28
Measurements show that pH of particular lake is 4.0. What is H+ ion concentration of lake?
10 -4 M
104 M
10-10 M
4.0 M
29
Which of the following processes includes all the others?
passive transport
transport of an ion down its electrochemical gradient
osmosis
diffusion of a solute across a membrane
30
According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly
spread in continuous layer over the inner & outer surfaces
randomly oriented in membrane w/no fixed inside-out polarity
confined to the hydrophobic interior of the membrane
embedded in a lipid bilayer
31
Which of the following is true of UNSATURATED fats?
They contain more H than saturated fats having same # of C
They generally solidify at room temperature.
They are more common in animals than in plants.
They have double bonds in carbon chains of their fatty acids
32
Which of the following hydrocarbons has a double-bond in its carbon skeleton?
C2H2
C3H8
C2H6
C2H4
33
Paramecia live in fresh water. They generally have to pump water _____ of their cell.
into
in & out
out of
34
We can be sure that a mole of table sugar and a mole of vitamin C are equal in their
number of molecules.
volume.
mass.
number of atoms.
35
Which of the following categories includes all others in the list?
polysaccharide
carbohydrate
monosaccharide
starch
36
Which structure-function pair is MISMATCHED?
microtubule; muscle contraction
ribosome; protein synthesis
Golgi; protein trafficking
nucleolus; production of ribosomal subunits
37
A controlled experiment is one that
keeps all variables constant.
proceeds slowly enough that a scientist can make careful rec
tests experimental & control groups in parallel
is repeated many times to make sure the results are accurate

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