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BIO165 Week 1 Quiz Review Flashcards | StudBud
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BIO165 Week 1 Quiz Review
BIO165 Week 1 Quiz Review
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#BIO165 #CJ #Week1 #quiz
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1
The emergent trait of life appears at the level of the __ when many molecules become organized
Atom
Population
Community
Cell
2
The second law of thermodynamics states that:
Energy can not be created nor destroyed
Energy of the universe is constant
Energy and matter are the same thing
Energy disperses spontaneously
3
Wood keeps burning once lit because:
the products have more energy than reactants
Energy is given off during the reaction - driving it forward
Intermediates from the reaction drive the reaction forward
The activation of the energy drives the reaction forward
4
Nucleic Acids are major components of
Proteins
Carbohydrates
Fats
DNA
5
Free radicals are defined as:
Atoms with a free electron in the outermost shell
Both are true
Neither are true
Atoms with no free electron in the outermost shell
6
What is a covalent bond?
A bond where electrons are shared
None of the above
a bond which is made between hydrogen molecules
a bond where electrons are not shared but given/taken away
7
The Ecosystem is made up of :
Living organisms and Nonliving things.
Only rocks and minerals
only plants, animals and fungi
The biosphere of the region
8
Polarity is defined as
When part of the molecule is positive, and part is negative.
When electrons are shared equally within a bond
Strong mutual attraction formed between ions
None of the above.
9
The atomic number is determined by the number of:
Protons and Neutrons
Neurons
Protons
Electrons
10
An enzyme is a molecule that
Slows Down a reaction by dissolving itself
Speeds up a reaction without being changed by it
Speeds up a reaction by dissolving itself
Slows down a reaction by being changed by it
11
An Acid is a substance that releases this compound in water:
H+
OH-
12
How does cell volume affect nutrient exchange between the cell and the external environment ?
Very small cells are best adapted for nutrient exchange
Volume to surface area ratio determines exchange efficiency
Very large cells are the best adapted for nutrient exchange
Nutrient exchange is not impacted by cell volume
13
The charge of a Neutron is:
Neutral
None of the above
Negative
Positive
14
An atom is made up of which of the following subatomic particles?
Isotope, Proton, Electron
Proton, Neutron, Electron
Metal, Non-metal, Organic
Neutron, Ions, Isotope
15
Fats are major components of the cell's
Membranes
Cytoplasm
Proteins
Ribosomes
16
The Mass Number is defined as
The number of Protons and Neutrons
The number of Neutrons and Protons
The number of Electrons and Protons
The number of Electrons and Neutrons
17
A Triglyceride is a lipid with :
Three fatty acid tails attached to a glycerol backbone.
Two fatty acid tails attached to a phosphate head.
Three fatty acid tails attached to a glycerol backbone.
Three fatty acid tails attached to a glycerol backbone.
18
Organic molecules are those that are made of ________ and hydrogen and consist of:
Carbon, Proteins, Lipids, Carbohydrates and Nucleic Acids
Oxygen, Proteins, Lipids, Carbohydrates and Nucleic Acids
Hydrogen, Proteins, Lipids, Plants and animals
Carbon, Metals, Animals, Plants and Nucleic Acids
19
The Number of protons, which identify an element is defined as the element's
None of the above
Charge
Atomic number
Mass number
20
Two elements with different atomic numbers are
Isotopes
Isomers
Ions
Different elements
21
The reason why a polar molecule is polar is because the electrons remain on
both sides equally across the bond.
one side of the bond more than the other.
22
Put in order from smallest to largest
Atoms, Molecules, Organisms, Cells, Communities, Biosphere
Molecules, Cells, Organisms, Communities, Ecosystem, atoms
Atoms, Molecules, Cells, Communities, Ecosystem, organisms
Atoms, Molecules, Cells, Organisms, Communities, Ecosystem
23
The process by which the first cell becomes a multi-celled adult is called:
inheritance
homeostasis
growth
reproduction
24
Steroids are made from the parent compound _______ and examples include ________ and ______.
Vitamin D, Estrogen and Testosterone
Cholesterol, Estrogen and Testosterone
Pregnenolone, Vitamin D and Testosterone
Cholesterol, Estrogen and Vitamin D
25
An element with different Mass Numbers and identical Atomic numbers are known as
Ions
Isotopes
Different elements
Isomers
26
A buffer is a set of chemicals that keep pH
Unstable by alternating donation and acceptance of protons
Unstable by alternating donation and acceptance of ions
Stable by alternating donation and acceptance of neutrons
Stable by alternating donation and acceptance of ions
27
What is a hydrogen bond?
A bond made between water molecules
A bond where electrons are not shared but given/taken away
A bond that where electrons are shared
A bond that is made between a proton and neutron
28
Tracers are used in what form of medical tests?
X-rays
PET scans
CT scans
Ultrasound
29
A molecule is a group of two or more atoms joined by chemical bonds:
False
True
30
The charge of an Electron is:
Negative
None of the above
Neutral
Positive
31
A BASE is a substance that releases this is water:
H+
OH-
32
The plasma membrane controls the contents of the cell
True
False
33
A Molecule with two fatty acid chains and a phosphate head is called
Fatty Acid
Triglyceride
Glycerol
Phospholipid
34
The word HYDROPHOBIC means
Water fearing
Water Loving
Water retaining
Water dissolving
35
The current rate of extinctions is about ____ times faster than normal.
100,000
1000
1,000,000
10
36
To visualize the structure of DNA, which has a width of 10nm, which microscope would be best?
Light microscope
Electron microscope
Polarizing microscope
Florescence microscope
37
The word HYDROPHILIC means
Water dividing
Water Loving
Water fearing
Water retaining
38
All of these statements describe bacteria except:
Bacteria are microscopic organisms
Most bacteria are harmful
Bacteria outnumber human cells in our bodies
All of these facts describe bacteria
39
A SOLUTE is defined by:
The substance that dissolves in a solvent (the salt)
The substance that dissolves the solvent (the water)
40
pH is
the measure of alkalinity concentration of OH+ in solution
the measure of acidity concentration of OH+ in solution
the measure of alkalinity/ concentration of H+ in solution
the measure of the acidity/ concentration of H+ in solution
41
Two elements with a different number of protons and electrons and are said to be "charged" are:
Radioactive
ions
Enantiomers
Isotopes
42
Lipids are made of _______. Fatty acids are different in that they have an _____ compound on it
Sugar compounds, alkaline carboxyl group at one end.
Fatty compounds, acidic carboxyl group at one end.
Protein compounds, acidic carboxyl group at one end.
Fatty compounds, acidic carboxyl group at one end.
43
Proteins are organic compound that consists of one or more of which compound:
Fatty acids
Amino acids
Monosaccharides
Nucleic acids
44
If the activation energy for a chemical reaction is very high, the reaction happens
Quickly
Slowly
Not at all
None of the above
45
A compound is a molecule that has atoms of more than one element:
True
False
46
What is an ionic bond?
a bond that is made between a metal and a nonmetal
A bond where electrons are not shared but given/taken away
a bond made between water molecules
A bond where electrons are shared
47
Which invention led to trans fats being marketed as a solid cooking fat?
Automobile
Telephone
Refrigerator
Electric light
48
a Base has a pH of
greater than 7
Equal to 7
Equal to 14
Less than 7
49
Organisms have a 2 word classification name. These two taxons utilized are the
Genus and Phylum
Family and Species
Genus and species
Kingdom and Order
50
Size of a cell is limited by the :
Relationship between volume and surface area
job it does
lack of building materials
materials it has to exchange
51
Homeostasis is defined by :
Ability to procreate
None of the above
the ability to respond to change
The maintenance of a steady internal environment
52
Carbohydrates are also known as _____ and are______.
Proteins; used for energy. Ex: Monomers
Proteins; used for energy. Ex: Polypeptides
Sugars; used for energy. Ex: Starch, cellulose and Glycogen
Sugars; used for structure. Ex: Polypeptides
53
What is the charge on a Proton?
Negative
Positive
Neutral
None of the above
54
Energy flows in which pattern?
Sun --> Consumers --> Producers --> Environment
Sun --> Producers --> Consumers -->Environment
Sun --> Environment --> Producers --> Consumers
Sun --> Environment --> Consumers -->Producers
55
According to the cell theory,
All cells come from preexisting cells
DNA is the structural and function of unit of life.
All organisms are multicellular
All cells are the same size
56
Pure water has a pH of
7
4
14
1
57
Energy is defined as
movement of atoms and molecules
The capacity to do work
Capacity to store sugar
Measurement of food intake.
58
Since viruses are very small and vary between 20-200nm , this microscope is best to view them:
contrasting
electron
light
polarizing
59
An example of a SOLVENT is:
Salt
Water
Sugar
Iron
60
a Carbon with an atomic number of 6 and a mass number of 17 has how many neutrons?
6
12
4
11
61
The enzyme that is part of the metabolic pathway that breaks down alcohol is called:
Ethanol protease
Alcohol dehydrogenase
Ethanol peroxidase
Alcohol oxidase
62
Nucleic acids are the building blocks of ______ and consist of the following:
DNA ; 5 carbon sugar, phosphate, Nucleotide
Protein ; 5 carbon sugar, phosphate, amino acid
Protein ; 5 carbon sugar, phosphate, Nucleotide
DNA ; Carbohydrate, phosphate, Fatty Acid
63
Carbon has an atomic number of 6. Carbon 14 then has:
6 Neutrons and 6 protons
8 neutrons and 6 protons
6 protons and 14 neutrons
14 protons and 8 neutrons
64
Which metabolite of alcohol is the most toxic?
Acetaldehyde
Alcohol dehydrogenase
Carbon Dioxide
Ethanol
