Which statement best describes the relationship between proteins and polypeptides?

Proteins are composed of polypeptides.

Which function of life does not require the expenditure of energy by the organism?

D. All of the above require energy

The reactive properties or chemical behavior of an atom mostly depends on the number of

electrons in the outer electron shell of the atom.

Which statement about evolution is true

Evolution can result in adaptations.

Which of the following is true about subatomic particles?

the mass of a neutron nearly equals the mass of a proton

Which statement about evolution is true

Evolution can result in adaptations.

the four most common elements found in organisms are???

carbon, hydrogen, oxygen, and nitrogen

Which of these rarely results in rapid advances in scientific knowledge?

C. governmental mandates like “the war on cancer” (Nixon, 1971)

What is a Hypothesis?

a tentative explanation for observations or a phenomenon

Which of the following is not part of the cell theory?

Eukaryotic cells are produced from prokaryotic cells

Which of the following is not a primary function of protein?

provides good and readily available source of energy

Which statement about the properties of life is false?

Organisms have an unchanging, constant internal environment

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BIO 104 Chapter 1 & 2: Anna's Version

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A review to verify understanding how chemistry relates to biology

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Questions 94

Answers

1
Which statement best describes the relationship between proteins and polypeptides?
Polypeptides, unlike proteins, are composed of amino acids
Polypeptides are composed of proteins.
Proteins, unlike polypeptides, are composed of amino acids.
Proteins are composed of polypeptides.
2
Which function of life does not require the expenditure of energy by the organism?
A. maintaining order
D. All of the above require energy
B. responding to the environment
C. growth
3
In an experiment on the consequences of smoking tobacco, a group pretending to smoke would be the __________ .
D. Variable
A.Control
C. Data
B. Experiment
4
Enzymes increase the rate of a reaction by _____.
Decreasing activation energy
Contributing water to the reaction
Changing the pH
Increasing the temperature of the substances
5
What particles are involved in an atom being NEUTRAL?
Quarks
Protons and Electrons
Neutrons and Electrons
Protons and Neutrons
6
A level of biological organization higher than the organelle is _______.
B. Molecule
D. Both A and C
A. Organ
C. Ecosystem
7
The reactive properties or chemical behavior of an atom mostly depends on the number of
neutrons found in the nucleus.
electrons in the outer electron shell of the atom.
electrons in each electron shell of the atom.
filled electron shells.
8
A _____ is an example of a unicellular organism
Cat
Pine tree
Fish
Paramecium
9
The primary determinant of an atom’s properties is the number of ____s.
B. Atom
A. Electron
C. Neutron
D. Protons
10
Which of the following trace elements needed by humans is commonly added to table salt?
iodine
magnesium
iron
fluoride
11
In the chemical reaction: OH- + H+ =è H2O. Water is the ________.
A. Result
D. Input
B. Reactant
C. Product
12
What particles are involved in an atom being an ISOTOPE?
Quarks
Protons
Neutrons
Electrons
13
Darwin argued that adaptation was due to____________.
D. Drift
C. Artificial selection
B. Natural selection
A. Sexual selection
14
Which statement about evolution is true
Evolution can result in adaptations.
Individuals evolve within the span of their own lifetimes
Organisms evolve structures in response to needs
Evolution is deliberate and purposeful
15
Which of the following is true about subatomic particles?
Electrons are negatively charged and are the heaviest
protons are positively charged and the lightest particle
the mass of a neutron nearly equals the mass of a proton
neutrons have no charge and are the lightest particle
16
Which statement about evolution is true
Organisms evolve structures in response to needs
Evolution is deliberate and purposeful
Evolution can result in adaptations.
Individuals evolve within the span of their own lifetimes
17
What is this part of the atom
Proton
Nucleus
Electron
Orbit
18
Which is the lightest element in the universe?
hydrogen
oxygen
sulfur
carbon
19
Polypeptide synthesis requires the joining together of _________.
C. nucleotides
B. amino acids
A. monosaccharides
D. fatty acids
20
Which of the following is true of vitamins?
Megadoses are beneficial
Provide energy
Inorganic compounds
Enable body to use energy
21
Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell, they
Lack a plasma membrane
Have a smaller nucleus
Lack a nucleus
Have membrane-bound internal organelles
22
The domain Archaea includes examples of _____.
D. Fungi
A. Eukaryotic cells
B. Prokaryotic cells
C. Molds
23
The human heart is _____.
C. an organelle
B. an organism
D. a biosphere
A. an organ
24
Which of the following is NOT a carbohydrate?
starch
meat
fiber
sugar
25
What is the Atomic Number
137.327
56
80
136
26
Which of the following is not an essential element?
Oxygen
Sodium
Carbon
Hydrogen
27
What is the Mass Number?
136
137.327
80
56
28
The four most common elements in living organisms are
C, H, O, N
C, H, O, Fe
C, H, O, Ca
C, N, O, Na
29
Chemistry of Life: Which statement is true?
A pH of more than 7 is acidic
A pH less than 7 is basic
A pH of 7 is neutral
30
the four most common elements found in organisms are???
carbon, hydrogen, oxygen, and nitrogen
helium, hydrogen, carbon
oxygen, mercury, phosphorus, carbon
carbon dioxide, zinc, calcium, and nitrogen
31
. Not all chemical bonds are the same. Which “bonds” are due entirely to attraction of positive to negative charge?
A. Hydrogen bonds
D. Covalent bonds
C. A and B
B. Ionic bonds
32
The results of a controlled experiment are typically the ________.
D. dependent variable
A. hypothesis
C. independent variable
B. experiment
33
Which of the following is commonly added to table salt to prevent the formation of goiters
Calcium
Sodium
Iodine
Flouride
34
Which of the following best characterizes the flow of information in the cell?
C. Protein=> DNA =>RNA
D. DNA =>RNA=> Protein
B. RNA =>DNA =>Protein
A. RNA =>Protein=> DNA
35
The concept that cells only arise from existing cells is a part of ___________.
C. Emergence
B. Evolution
A. Atomic theory
D. Cohesion
36
Which of the following is a measure of disorder?
Kinetic energy
Entropy
Potential energy
Respiration
37
Which of these rarely results in rapid advances in scientific knowledge?
B. new and improved technology (microscope, PCR machine)
C. governmental mandates like “the war on cancer” (Nixon, 1971)
D. careful experiments with fortuitous discoveries
A. unique insight (Einstein-relativity, Darwin-natural selection)
38
Lactose intolerance is the inability to properly
produce lactose
produce milk proteins
digest lactose
digest cellulose
39
Which ion concentration is higher at a pH of 10.0?
B. H+
A. OH-
C. Neither
40
The four most common elements in living organisms are
C, H, O, Ca
C, H, O, N
C, N, O, Na
C, H, O, Fe
41
What is a Hypothesis?
A question
a tentative explanation for observations or a phenomenon
Involves series of ordered steps
An answer
42
A radioactive isotope has a nucleus that
has more electrons than the common variant of the element
decays spontaneously
has more protons than the common variant of the element
is stable
43
Which of the following is not part of the cell theory?
New cells are produced from existing cells
Eukaryotic cells are produced from prokaryotic cells
44
Which of the following is not a function of protein?
production of antibodies
growth and maintenance of cells
absorption of water and fiber
tissue and nerve development
45
The particles that are found in the nucleus of an atom are
protons and neutrons
protons and electrons
neutrons and electrons
electrons only
46
What subatomic particles are found in the nucleus?
Protons Only
Electrons Only
Protons and Electrons
Protons and Neutrons
47
Which of the following is not a primary function of protein?
production of antibodies
growth and maintenance of cells
provides good and readily available source of energy
tissue and nerve development
48
All energy in the biosphere is eventually lost as _________.
D. gene expression
C. radiant heat
B. Sun light
A. Sugar
49
Which statement about the properties of life is false?
Organisms have the ability to take in energy and use it
Organisms have an unchanging, constant internal environment
Organisms respond to stimuli from the environment
Organisms have the ability to reproduce
50
Radioactive decay is the impulsive combustion of the atomic nucleus.
True
False
51
Insects are examples of _____.
D. Animals
B. Protists
A. Archaea
C. Plants
52
The shape of a protein is determined by
the interaction between R-groups of a chain of amino acids
all of the above
Hydrogen bonds along the backbone of the polypeptide
the sequence of amino acids
53
Which is the lowest level of biological organization that would show the interaction of owls and mice (predation)?
B. Population
C. Organism
A. Cell
D. Community
54
What is a hypothesis?
All Above
An Observation
If/Then Statement
Educated Guess / Inference
55
Organisms that convert light energy into chemical energy are called____________.
B. Producers
D. Eukarya
A. Consumers
C. Decomposers
56
Water molecules form hydrogen bonds because
the water molecule forms a tetrahedron
the water molecule is polar
the oxygen molecule is positively charged.
the hydrogen atoms are negatively charged
57
natural selection is
Influenced by cell division
Influenced by nature
Influenced by an organism diet
Influenced by humans
58
What part of a radioactive isotope is unstable?
The space around the nucleus
Everything within 5cm of the atom
The nucleus
The isotope is stable, it always emits particles/energy
59
What is a polar covalent bond?
Electrons are shared unequally
Electrons are shared equally
Protons are shared unequally
Protons are shared equally
60
Which level of biological organization is most appropriate to the study of African Savanna?
D. Cell
C. Ecosystem
A. Biosphere
B. Population
61
What are saturated fats saturated with
Hydrogen
Carbon
Nitrogen
Phosphorous
62
Which of these is NOT a trace element in the human body?
cobalt
copper
carbon
iron
63
In an ecosystem, energy
typically flows from producers to a series of consumers
comes ultimately from bacteria
cycles along with chemical nutrients
typically flows from consumers to producers to decomposers
64
Which of the following represents an ionic compound?
H2
NH3
K2Cr2O7
CO3^-2
65
The adhesion of water is due to ___________.
D. Covalent bonds
A. Double bonds
B. Ionic bonds
C. Hydrogen bonds
66
Which is the primary mineral found in table salt?
Potassium
Chloride
Magnesium
Calcium
67
_____ are the major lipids of plasma membranes
Fatty acids
Steroids
Triglycerides
Phospholipids
68
Which of the following best represent a liquid?
a definite shape, but no defined volume
no defined volume or shape
a definite volume and shape
a defined volume, but not a defined shape
69
Which compound has a polar covalent bond?
H2O
MgCl2
KI
NaCl
70
What name is given to the following reaction?glucose + glucose →maltose + water
gluconeogenesis
denaturization
hydrolysis
dehydration reaction
71
Which of the following is an example of a polysaccharide
maltose
Fructose
Starch
Glucose
72
the lowest level of biological organization that shows the emergent property
B. Population
C. Organism
D. Community
A. Cell
73
The tree is home to cardinals, ants, a wasp's nest, squirrels, and millions of bacteria
species
ecosystem
Community
population
74
Which is an example of a protein?
C. Steroid
B. Glycogen
D. DNA
A. Hemoglobin
75
What is a hypothesis?
explanation made on the basis of abundant evidence
explanation made on the basis of assumption
explanation made on the basis of unlimited evidence
Explanation made on the basis of limited evidence
76
What is an atom?
something that cannot be broken down anyfarther
smallest prtcle of an element that has different properties
smallest prtcle of an element that still has it's properties
A man
77
. Liquid water is fundamental to biological processes. Why?
D. all of the above
C. Forms hydrogen bonds
A. Readily breaks ionic bonds
B. Provides the kinetic energy necessary for chemical reactions
78
Which statement is incorrect about proteins
Proteins are long usual folded chains
Proteins are bonded together resulting in simple sugars
proteins can be broken down and used for energy
79
A solution of pH 7.1 is _________.
D. An isotope
A. Acidic
B. Basic
C. Neutral
80
The theory which best explains the conservation and diversity among living things is _______.
D. Cohesion
A. Atomic theory
C. Emergence
B. Evolution
81
what is covalent bonding
the sharing of electron pairs between atoms
The chemical combination of two protons
When the nucleus of an atom joins another
when two shells join
82
What will happen if CO2 levels in the oceans increase?
The oceans will become more basic
Growth rates of organisms such as corals will decrease
both b and c
The oceans will become more acidic
83
Which of the following roles is played by carbohydrates in human nutrition?
structural component of cells in the body
act as an energy source
assist enzyme function
storage form of unused chemical energy
84
Which of the following particles are found on the outside of the nucleus?
neutrons
protons
electrons
ions
85
The nucleus of the atom has all of the following EXCEPT:
A positive charge
It comprises of most of the atoms volume
It is very dense
It contains most of the atoms mass
86
Which is not a characteristic of all living things?
A. Order
B. Genetic information
D. Reproduction
C. Energy processing
87
Which of the following describes how ALL consumers get their energy?
from eating primary producers
from eating organisms that are living or were once living
from inorganic chemical like hydrogen sulfide
directly from the sun
88
. Breaking down macromolecules is a _______ reaction while synthesizing them is a _________ reaction?
C. hydrolysis, dehydration
A. dehydration, hydrolysis
B. nuclear, hydrolysis
89
Which of these is a trace element required for the human body?
carbon
hydrogen
nitrogen
iron
90
A chemical bond that results in 1 mol. stripping electrons from the outer shell of another mol.
Hydrogen
Covalent
Ionic
Polar covalent
91
Which of the following is a group within the domain Eukarya
protists
Archaea
Fungi
bacteria
92
Carbohydrates are composed of _________ monomers.
B. amino acid
A. monosaccharide
C. nucleotide
D. fatty acid
93
Which of the following is a trace element found in the body?
Zinc
Nitrogen
Carbon
Hydrogen
94
How many covalent bonds does an atom of Oxygen have in a molecule of water?
A. 1
B. 2
D.4
C.3

BIO 104 Chapter 1 & 2: Anna's Version Flashcards | StudBud