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Biology Ch 2.3 Carbon & Molecular Diversity of Life Flashcards | StudBud
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Biology Ch 2.3 Carbon & Molecular Diversity of Life
Biology Ch 2.3 Carbon & Molecular Diversity of Life
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1
The number of unpaired electrons in the valence shell of an atom is generally equal to its what?
Electron configuration
Valence
2
What is the key to an atom's characteristics?
Electron configuration
Valence
3
What functional group is this?
Carboxyl
Amino
Sulfhydryl
Hydroxyl
4
Are enantiomers important in the pharmaceutical industry?
Yes
No
5
Historically, compounds containing carbon are said to be what?
Molecular
Organic
6
Which isomers have the same covalent bonds but differ in their spatial arrangements?
Structural isomers
Cis-trans isomers
Enantiomers
7
Two enantiomers of a drug don't have different effects.
False
True
8
What functional group is this?
Sulfhydryl
Amino
Phosphate
Carboxyl
9
Because CO2 is a simple molecule and lacks hydrogen, it is often considered inorganic, even though it contains carbon.
True
False
10
Living organisms consist mostly of what?
Carbon-based compounds
Oxygen-based compounds
Hydrogen-based compounds
11
What element accounts for the enormous variety of biological molecules?
Carbon
Hydrogen
12
When two carbon atms are joined by a double bond, this makes the molecule _____.
Tetrahedral
Flat
13
Which isomers have different covalent arrangements of their atoms?
Enantiomers
Structural isomers
Cis-trans isomers
14
What is a compound that only contains one carbon, but forms two double bonds?
H2O
CO2
15
What are organic molecules consisting of ONLY carbon and hydrogen?
Hydrocarbons
Covalent bonds
16
ATP consists of an organic molecule called _______ attached to a string of three ______ _____.
Triphosphate, hydroxyl groups
Adenosine, phosphate groups
Adenosine, carboxyl groups
Triphosphate, methyl groups
17
Which one contains carboxyl groups?
Fatty acids
DNA
Amino acids
Nucleic acids
18
What functional group is this?
Phosphate
Hydroxyl
Amino
Methyl
19
What are the components of organic molecules that are most commonly involved in chemical reactions?
Functional groups
Organic compounds
20
Did Fredrich Wohler, a German chemist, synthesize urea, which is an organic compound in the urine of animals?
Yes
No
21
Many organic molecules, such as fats, have hydrocarbon components.
True
False
22
Usually, only one isomer is biologically active.
No
Yes
23
Atoms of hydrogen are attached to the carbon skeleton wherever electrons are available for covalent bonding.
True
False
24
A counterclockwise direction of an enantiomer is represented by a ___ configuration. (sinister, Latin for left)
R
T
S
L
25
Because of carbon's ability to form _____ ______, these building blocks can make a variety of organic molecules.
six bonds
four bonds
26
Organic compounds range from simple molecules to colossal ones.
True
False
27
Kids born with deformities because of the drug. It affects with ______ ______ that shut off gene for limb development.
Translation proteins
Transcription proteins
28
What kind of bond(s) would be present in a completely flat section of a biological molecule?
Triple bond
Single bond
Double bond
Both double or triple bonds
29
What is the study of compounds that contain carbon, regardless of origin?
Organic molecules
Organic chemistry
30
Functional groups often behave as a unit and give organic molecules what three things in an aqueous solution?
Electronegativity
Physical properties
Chemical reactivity
Solubility
31
What are the seven functional groups that are most important in chemistry? (pick 2)
Phosphate, carbonyl
Hydroxyl, carbonyl, carboxyl, amino
Fatty acids, DNA, methyl
Methyl, phosphate, sulfhydryl
32
What are isomers that are mirror images of each other?
Enantiomers
Cis-trans isomers
Structural isomers
33
Many organic molecules in biology contain chains of carbon atoms, w/ certain hydrogen atoms replaced by what?
Functional groups
Chemical reactivity
34
Although hydrocarbons are not prevalent in most living organisms, many of a cell's organic molecules contain only what?
Oxygen and hydrogen
Hydrogen and carbon
35
What is this?
ATP to ADP reaction
Photosynthesis
36
What functional group is this?
Phosphate
Sulfhydryl
Carboxyl
Carbonyl
37
In 1957, a pharmaceutical company in West Germany introduced a drug called thalidomide. What is its molecular formula?
C13H10N2O4
H2O
38
The number and arrangement of functional groups give each molecule its unique properties.
True
False
39
Of these 6, all but ______ _____ are hydrophilic, meaning they increase solubility of organic compounds in water.
Phosphate group
Methyl group
Carbonyl group
Sulfhydryl group
40
Which one has phosphate groups?
Amino acids
Fatty acids
Nucleic acids
DNA
41
What is the number of covalent bonds an atom can form? (outermost shell of electrons)
Electron configuration
Valence
42
The _____ of carbon and its most frequent partners (H, O, and N) are the building blocks of molecules.
Valence
Electron configuration
43
What type of isomer is propanal to acetone?
Structural isomer
Enantiomer
Cis-trans isomer
None of the above
44
ATP _____ the potential to react with water. This reaction _____ energy that can used by the cell.
Releases, stores
Stores, releases
45
Estradiol and testosterone are both _____ with a common carbon skeleton, in the form of four fused rings.
Proteins
Steroids
46
Awesome job! What is Emily's favorite song from Frozen?
Love is An Open Door
Let It Go
For The First Time in Forever
Fixer Upper
47
What functional group is this?
Amino
Sulfhydryl
Carboxyl
Hydroxyl
48
These sex hormones (estradiol & testosterone) differ in the chemical groups attached to the rings of carbon skeleton.
True
False
49
The great diversity of organisms on the planet is due to what?
The versatility of hydrogen
The versatility of carbon
50
Experiments support the idea that abiotic synthesis of organic compounds, near volcanoes, could've been a stage of life.
False
True
51
In molecules with multiple carbons, each carbon bonded to four other atoms has a ______ shape.
Tetrahedral
Flat
52
What did Stanley Miller's experiment demonstrate?
Synthesis of molecules
Abiotic synthesis of organic compounds
53
Which one can have methyl groups added to alter expression levels?
DNA
Amino acids
Fatty acids
Nucleic acids
54
What is this called?
Skinner box
Stanley Miller experiment
55
For example the molecules known as fats contain long ________ tails attached to a nonhydrocarbon component.
Carbon
Hydrocarbon
56
The drug was made and marketed as a ____ ______ (50/50 mixture) of the +R and -S thalidomide.
Internal mixture
Racemic mixture
57
Are these examples of how carbon chains can vary?
No...
Yes!
58
Which one has an amino and carboxyl group?
Nucleic acids
DNA
Amino acids
Fatty acids
59
Distinctive properties of organic molecules depend on what two things?
The carbon skeleton and the chemical groups attached to it
The carbon skeleton and its covalent bonds
60
This drug was sold in 46 countries under 37 brand names. Doctors prescribed it to pregnant women as what?
A sedative and sleeping drug
An anti-aging drug
61
________ effects of enantiomers demonstrate that organisms are sensitive to even subtle varations in molecules.
Similar
Differing
62
What functional group is this?
Phosphate
Carboxyl
Sulfhydryl
Carbonyl
63
What forms the skeleton of most organic molecules?
Carbon chains (skeletons)
Double bonds
64
An important organic phosphate is adenosine triphosphate (ATP).
True
False
65
Hydrocarbons can undergo reactions that release a ________ amount of energy.
Large
Small
66
Electron configuration determines the kinds and number of bonds an atom will form with other bonds.
False
True
67
What are the major elements of life?
Carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus
Nitrogen, hydrogen, sulfur
Carbon, oxygen, hydrogen
68
____ treats Parkinson's disease while ______ has no effect on the disease.
L-Dopa, D-Dopa
D-Dopa, L-Dopa
69
What functional group is this?
Phosphate
Methyl
Amino
Hydroxyl
70
All of these functional groups are chemically reactive except one. Which one is not?
Hydroxyl
Carbonyl group
Amino group
Methyl group
71
What are compounds with the same molecular formular but different structures and properties?
Valence electrons
Isomers
72
Carbon chains can vary in which categories?
Double bond position and presence of rings
Length and branching
Length, branching, double bond position, and presence of rings
73
A clockwise direction of an enantiomer is represented by a ___ configuration. (rectus, Latin for right)
L
T
R
S
74
What gives carbon its covalent compatibility with many different elements?
Its electron configuration
Its valence