Chapter 11-12 Flashcards
What structure is this?
CH3CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2C||O-OH
A fatty acid
Which of the following fatty acid will have the lowest boiling point?
A) Saturated
B)Monounsaturated
C) Polyunsaturated
Answer:C
What are Omega - 3 Fatty Acids?
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.
Reacting a fatty acid with NaOH... A) increases water solubility B) decreases water solubility C) shortens the carbon chain D) Makes molecule more hydrophobic
Answer:A
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
Answer:D
What is the difference between a solid fat and liquid oil?
Liquid oils come from plant oils and solid fats come from animals
What are Waxes?
They react with a carboxylic acid to form an ester. They also serve a protection function and store energy in microorganisms
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
Answer:A
Summarize Health Link Omega-3 Fatty Acids
In omega 3 fatty acids studies have shown taking omega 3 fatty acids brings health benefits. The health benefits are HDL,LDL,VDL.
Summarize health link trans fats
Trans fats are when vegetable oils are partially hydrated. Many schools and restaurants have banned trans fats because there is so much fat.
\_\_is the eicosanoid involved in muscle contractions A) prostaglandin B) Leukotriene C) Progesterone D) Thromboxane
Answer: B
\_\_\_\_is the eicosanoid involved in blood clotting. A) prostaglandin B) leukotriene C) progesterone D) thromboxane
Answer:D
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
Answer:B
Some molecules and ions are transported across a membrane via\_\_\_, which requires energy A) osmosis B) diffusion C) facilitated diffusion D) active transport
Answer:D
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
Answer:B
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
Answer:B
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
Answer:A
The peptide bond that connects amino acids in protein is actually an\_\_\_\_\_linkage. A)amine B) amide C) ether D) ester
Answer: B
The term commonly used for a chain of amino acids 10 units long is\_\_\_. A) peptide B) oligopeptide C) polypeptide D) centapeptide
Answer:C
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)
Answer:B
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
Answer:B
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.
Answer:B
Summarize health link ramifications and relents as enzyme inhibitors
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.
Summarize the health link antigens.
Antigens are any substance that the immune system can recognize.
Summarize the health link active site.
The active site of an enzyme where substrate molecules are bound and undergo a chemical reaction.
Summarize the health link denaturation of proteins
Denaturation Of proteins involves the disruption and possibilities of both the secondary and tertiary structures
The a-helix and B-pleated sheet are both forms of the\_\_\_\_structure of proteins. A) primary B) secondary C) tertiary D) quaternary
Answer:B
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
Answer:D
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
Answer:D
Which of the following is an example of a protein that exhibits a quartenary structure? A) insulin B) hemoglobin C) collagen D) keratin
Answer:B
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
Answer:C
