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1
Q

What type of molecules do not have a separation of electrical charge?

A

Non polar molecules

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2
Q

What type of molecules have an uneven distribution of electrical charge?

A

Polar molecules

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3
Q

True or False: Non polar molecules have a symmetrical distribution of electrons.

A

True

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4
Q

True or False: Polar molecules have a symmetrical distribution of electrons.

A

False

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5
Q

Which type of molecules are hydrophobic, repelling water?

A

Non polar molecules

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6
Q

Which type of molecules are hydrophilic, attracting water?

A

Polar molecules

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7
Q

What type of bond typically forms between non polar molecules?

A

Van der Waals forces

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8
Q

What type of bond typically forms between polar molecules?

A

Hydrogen bonds

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9
Q

What is an example of a non polar molecule?

A

Oxygen gas (O2)

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10
Q

What is an example of a polar molecule?

A

Water (H2O)

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11
Q

Which type of molecules have a net dipole moment?

A

Polar molecules

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12
Q

Which type of molecules do not have a net dipole moment?

A

Non polar molecules

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13
Q

Fill in the blank: Non polar molecules have a __________ distribution of charge.

A

Symmetrical

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14
Q

Fill in the blank: Polar molecules have an __________ distribution of charge.

A

Asymmetrical

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15
Q

What property of water is a result of its polar nature?

A

High surface tension

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16
Q

What property of non polar molecules makes them useful as solvents for non polar substances?

A

Low polarity

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17
Q

What type of molecules are more likely to form intermolecular attractions?

A

Polar molecules

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18
Q

What type of molecules are less likely to dissolve in water?

A

Non polar molecules

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19
Q

What type of molecules are more likely to form a homogeneous mixture with water?

A

Polar molecules

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20
Q

What type of molecules are often found in biological membranes?

A

Both polar and non polar molecules

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21
Q

Which type of molecules are commonly used as building blocks in organic chemistry reactions?

A

Both polar and non polar molecules

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22
Q

What property of non polar molecules allows them to easily pass through cell membranes?

A

Low polarity

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23
Q

What property of polar molecules makes them more likely to interact with water molecules?

A

High polarity

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24
Q

What type of molecules are more likely to participate in hydrogen bonding?

A

Polar molecules

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25
What is the definition of hydrophilic?
Having an affinity for water.
26
True or False: Hydrophilic substances repel water.
False
27
Fill in the blank: Hydrophilic molecules are ________ in water.
soluble
28
What type of molecules tend to be hydrophilic?
Polar molecules
29
What property allows hydrophilic molecules to interact with water?
Hydrogen bonding
30
Which of the following is an example of a hydrophilic substance: a) oil b) salt c) sugar d) wax
c) sugar
31
What is the opposite of hydrophilic?
Hydrophobic
32
In biological systems, why is it important for molecules to be hydrophilic?
To facilitate interactions with water and other molecules.
33
How do hydrophilic molecules behave when placed in water?
They tend to dissolve or form aqueous solutions.
34
True or False: Hydrophilic molecules are often nonpolar.
False
35
What role do hydrophilic molecules play in the formation of cell membranes?
They help create a hydrophilic environment inside and outside the cell.
36
Fill in the blank: Hydrophilic molecules have a strong ________ for water.
affinity
37
Which of the following is an example of a hydrophilic polymer: a) polyethylene b) cellulose c) PVC d) polystyrene
b) cellulose
38
How do surfactants interact with water: a) repel water b) attract water c) form micelles d) dissolve in water
c) form micelles
39
What type of bond is commonly found between hydrophilic molecules and water molecules?
Hydrogen bond
40
Which of the following amino acids is hydrophilic: a) alanine b) phenylalanine c) lysine d) leucine
c) lysine
41
True or False: Hydrophilic molecules tend to be lipids.
False
42
What is the primary characteristic of hydrophilic substances?
Their ability to mix with or dissolve in water.
43
Fill in the blank: Hydrophilic molecules have a high degree of ________ in water.
solubility
44
Why do hydrophilic substances have a strong affinity for water?
Due to the presence of polar or charged groups.
45
Which of the following is a common application of hydrophilic materials: a) waterproofing b) drug delivery c) oil drilling d) insulation
b) drug delivery
46
What is the main driving force behind the behavior of hydrophilic molecules in water?
Hydrogen bonding with water molecules.
47
True or False: Hydrophilic substances tend to aggregate in nonpolar solvents.
False
48
How do hydrophilic molecules affect the surface tension of water?
They lower the surface tension.
49
What is the significance of hydrophilic interactions in biological systems?
They play a crucial role in protein folding and molecular recognition.
50
What does the term 'hydrophobic' mean?
Repelling or failing to mix with water.
51
True or False: Hydrophobic substances are water-loving.
False
52
Fill in the blank: Hydrophobic substances tend to be ________ in nature.
Nonpolar
53
What type of interactions occur between hydrophobic molecules in water?
Hydrophobic interactions
54
What is an example of a hydrophobic molecule?
Oil
55
How do hydrophobic molecules interact with water molecules?
They cluster together to minimize contact with water.
56
What is the opposite of hydrophobic?
Hydrophilic
57
True or False: Hydrophobic substances dissolve easily in water.
False
58
What is the primary driving force behind the hydrophobic effect?
Entropy
59
Fill in the blank: Hydrophobic molecules are usually composed of ________ atoms.
Carbon and hydrogen
60
What is the term used to describe the tendency of hydrophobic molecules to aggregate in water?
Hydrophobic collapse
61
How do hydrophobic molecules interact with hydrophilic molecules in a solution?
They tend to segregate and minimize contact with each other.
62
What is the role of hydrophobic interactions in protein folding?
They contribute to the stability of the protein structure.
63
True or False: Hydrophobic interactions are weaker than covalent bonds.
True
64
What is the term used to describe the phenomenon where hydrophobic molecules are driven together in water?
Hydrophobic collapse
65
What is the term for a molecule that has both hydrophobic and hydrophilic regions?
Amphiphilic
66
How do detergents utilize hydrophobic interactions?
They use their hydrophobic tails to bind to oils and fats, while their hydrophilic heads interact with water.
67
What is the term for the process of hydrophobic molecules being driven together in water to minimize exposure to the solvent?
Hydrophobic collapse
68
What is the term used to describe the clustering of hydrophobic molecules in water?
Hydrophobic aggregation
69
What is the term for the ordered structure that hydrophobic molecules adopt in water?
Hydrophobic cluster
70
True or False: Hydrophobic molecules have a high affinity for water.
False
71
What is the term for the force that drives hydrophobic molecules together in water?
Hydrophobic effect
72
How do hydrophobic molecules behave in an aqueous environment?
They tend to minimize their contact with water.
73
What type of molecules are typically hydrophobic?
Nonpolar molecules
74
What does the term 'lipophilic' refer to?
Having an affinity for or attraction to lipids or fats
75
True or False: Lipophilic substances tend to dissolve in water.
False
76
Fill in the blank: Lipophilic substances have a strong attraction to ________.
lipids or fats
77
Which type of molecules are more likely to be lipophilic: polar or nonpolar?
Nonpolar molecules
78
What is the opposite of lipophilic?
Hydrophilic
79
Are lipophilic substances more likely to pass through cell membranes or hydrophilic substances?
Lipophilic substances
80
Fill in the blank: Lipophilic substances have a low affinity for ________.
water
81
Which type of molecules are more likely to be water-soluble: lipophilic or hydrophilic?
Hydrophilic molecules
82
True or False: Lipophilic substances are generally more soluble in organic solvents than in water.
True
83
What is the primary characteristic of lipophilic compounds?
They are insoluble in water
84
Fill in the blank: Lipophilic compounds are commonly used in the formulation of ________ products.
cosmetic
85
Which type of molecules are more likely to interact with cell membranes: lipophilic or hydrophilic?
Lipophilic molecules
86
True or False: Lipophilic substances are more likely to be absorbed through the skin than hydrophilic substances.
True
87
What type of substances are often used as carriers for lipophilic drugs in pharmaceutical formulations?
Lipid-based substances
88
Fill in the blank: Lipophilic molecules have a high affinity for ________.
lipid bilayers
89
Which type of molecules are more likely to be stored in fatty tissue: lipophilic or hydrophilic?
Lipophilic molecules
90
True or False: Lipophilic substances are less likely to cross the blood-brain barrier compared to hydrophilic substances.
False
91
What is the primary challenge in formulating lipophilic drugs for oral administration?
Achieving adequate solubility in the gastrointestinal tract
92
Fill in the blank: Lipophilic substances are often used in the production of ________ products.
pharmaceutical
93
Which type of molecules are more likely to be excreted in urine: lipophilic or hydrophilic?
Hydrophilic molecules
94
True or False: Lipophilic drugs tend to have a longer duration of action in the body compared to hydrophilic drugs.
True
95
What is the main advantage of using lipophilic excipients in drug formulations?
Enhanced bioavailability of lipophilic drugs
96
Fill in the blank: Lipophilic drugs are often metabolized in the ________.
liver
97
Which type of molecules are more likely to be eliminated through bile: lipophilic or hydrophilic?
Lipophilic molecules

Biology (9 decks)

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