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Chem 110 > Chapter 11-12 > Flashcards

Chapter 11-12 Flashcards

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1
Q

What structure is this?

CH3CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2C||O-OH

A

A fatty acid

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2
Q

Which of the following fatty acid will have the lowest boiling point?
A) Saturated
B)Monounsaturated
C) Polyunsaturated

A

Answer:C

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3
Q

What are Omega - 3 Fatty Acids?

A

Must be consumed in the diet because it cannot be produced by the body. It also increases HDL levels, decreases blood pressure and lower risk of heart disease.

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4
Q 
Reacting a fatty acid with NaOH...
A) increases water solubility 
B) decreases water solubility 
C) shortens the carbon chain
D) Makes molecule more hydrophobic
A

Answer:A

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5
Q 
Arachidonic acid is what type of fatty acid?
A) Saturated Fatty Acid
B) Omega-3 Fatty Acid
C) Monounsaturated Fatty Acid
D)Omega-6 Fatty Acid
A

Answer:D

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6
Q

What is the difference between a solid fat and liquid oil?

A

Liquid oils come from plant oils and solid fats come from animals

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7
Q

What are Waxes?

A

They react with a carboxylic acid to form an ester. They also serve a protection function and store energy in microorganisms

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8
Q

The effect of the hydrogenation of oils is to
A) Remove double bonds
B) Cause the the oils to remain as liquids
C) make the oils boil at a lower temperature
D) make the oils oxidize

A

Answer:A

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9
Q

Summarize Health Link Omega-3 Fatty Acids

A

In omega 3 fatty acids studies have shown taking omega 3 fatty acids brings health benefits. The health benefits are HDL,LDL,VDL.

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10
Q

Summarize health link trans fats

A

Trans fats are when vegetable oils are partially hydrated. Many schools and restaurants have banned trans fats because there is so much fat.

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11
Q 
\_\_is the eicosanoid involved in muscle contractions
A) prostaglandin 
B) Leukotriene
C) Progesterone 
D) Thromboxane
A

Answer: B

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12
Q 
\_\_\_\_is the eicosanoid involved in blood clotting. 
A) prostaglandin 
B) leukotriene
C) progesterone 
D) thromboxane
A

Answer:D

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13
Q

The fluid mosaic model proposes that
A)membranes can move like fluid
B) proteins are embedded to the cell membrane
C) materials that are fluid move across a membrane
D) the composition of membranes includes a mosaic fluid

A

Answer:B

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14
Q 
Some molecules and ions are transported across a membrane via\_\_\_, which requires energy
A) osmosis
B) diffusion
C) facilitated diffusion
D) active transport
A

Answer:D

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15
Q 
Triglycerides composed of glycerin and mostly polyunsaturated fatty acid residues are likely to be\_\_\_at room temperature. 
A) solid fats
B) liquid oils
C) gases
D) waxes
A

Answer:B

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16
Q

Animal fats and vegetable oils become rancid when exposed to air because
A) they are hydrogenated to form saturated fatty acids.
B) carbon-Carbon double bonds are oxidized in air, producing small organic molecules
C) they form amino acids in air
D) they are partially hydrogenated

A

Answer:B

17
Q 
At physiological pH, most amino acids carry both a I+ and I- charge. This form is known as a\_\_\_\_.
A) zwitterion
B) anion
C) cation
D) isoelectric ion
A

Answer:A

18
Q 
The peptide bond that connects amino acids in protein  is actually an\_\_\_\_\_linkage. 
A)amine
B) amide
C) ether 
D) ester
A

Answer: B

19
Q 
The term commonly used for a chain of amino acids 10 units long is\_\_\_.
A) peptide 
B) oligopeptide
C) polypeptide 
D) centapeptide
A

Answer:C

20
Q 
Which reaction is capable of breaking polypeptides into their component amino acids?
A) hydrogenation (adding hydrogen)
B)hydrolysis(adding water)
C) dehydrogenation(removing hydrogen)
D)dehydration (removing water)
A

Answer:B

21
Q 
Leucine-enkephalin, a pentapeptide, is a naturally occurring pain reliever found in the brain. How many peptide bonds are there in leucine - enkephalin?
A)5
B)4
C)6
D)3
A

Answer:B

22
Q

A tetrapeptide is given as: ser-lys-ala-pro. Which of the following statements is true?
A) The serine provided a nitrogen for the peptide bond.
B) The N-terminus is serine(ser)
C) there are four peptide bonds because there are four amino acids.
D) the listing should be in alphabetical order.

A

Answer:B

23
Q

Summarize health link ramifications and relents as enzyme inhibitors

A

The health link talked about where subside molecules are bonded and go into a chemical react. Also, when you get an infection or the tamiflu your immune system will weaken and will take a while to get rid of it.

24
Q

Summarize the health link antigens.

A

Antigens are any substance that the immune system can recognize.

25
Q

Summarize the health link active site.

A

The active site of an enzyme where substrate molecules are bound and undergo a chemical reaction.

26
Q

Summarize the health link denaturation of proteins

A

Denaturation Of proteins involves the disruption and possibilities of both the secondary and tertiary structures

27
Q 
The a-helix and B-pleated sheet are both forms of the\_\_\_\_structure of proteins. 
A) primary 
B) secondary
C) tertiary 
D) quaternary
A

Answer:B

28
Q 
A biologically active protein referred to as a simple protein contains
A) very few hydrogen bonds 
B) only one heme group
C)less than three different amino acids
D) no prosthetic groups
A

Answer:D

29
Q 
Which interactions are involved in establishing and holding the three dimensional of a protein?
A) salt bridge and disulfide bonds
B) hydrogen bonds 
C) hydrophobic effects
D) all of these
A

Answer:D

30
Q 
Which of the following is an example of a protein that exhibits a quartenary structure?
A) insulin
B) hemoglobin 
C) collagen
D) keratin
A

Answer:B

31
Q 
When a patient has accidentally ingested methanol, a physician can order the use of ethanol to overwhelm the alcohol dehydrogenase enzyme. This prevents the liver from producing deadly formaldehyde from the methanol. This is an example of\_\_\_\_\_.
A) covalent modification 
B) feedback inhibition
C)competitive inhibition
D) protein denaturation
A

Answer:C

Chem 110 (7 decks)

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