Which lipid is synthesized using Ser, an amino acid, as the backbone? Select one: a. sphingomyelin...
Which lipid is synthesized using Ser, an amino acid, as the backbone?
Select one:
a. sphingomyelin
b. phosphatidylserine
c. triacylglycerol
d. All of these
e. None of these
Homework Answers
Answer:
b) phosphatidylserine
Explanation: Phosphatidylserine is a fatty substance called a phospholipid. It covers and protects the cells in the brain and carries messages between them. Phosphatidylserine is a component of the cell membrane. It is an aminophospholipid having serine as an amino acid.
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Which lipid is synthesized using Ser, an amino acid, as the
backbone?
Select one:
a. sphingomyelin...
In the octapeptide, Phe-Ile-Ser-Asp-Gly-Haus-Gly-Tyr, which is the C-terminal amino acid? A) Ser B) Phe C) Tyr...
In the octapeptide, Phe-Ile-Ser-Asp-Gly-Haus-Gly-Tyr, which is the C-terminal amino acid? A) Ser B) Phe C) Tyr D) His E) Gly D) Which molecule is an a-amino acid? A) CH CH3CH2CHCHCOZH NH CH CH2CH2CHCHCONH, CH, ICHCONH B) E) CH, CHYCH,CHCHCO,H CN CH, CH3CH2CHCHNH2 NH2 C) CH CH, CH2CHCHCO,H NH
Classify the molecule shown a. Steroid b. Glycerophospholipid c. Fatty acid d. Triacylglycerol e. Sphingomyelin
Classify the molecule shown a. Steroid b. Glycerophospholipid c. Fatty acid d. Triacylglycerol e. Sphingomyelin
Which of the following is NOT true of lipid rafts? The are less fluid than the...
Which of the following is NOT true of lipid rafts? The are less fluid than the surrounding membrane The can serve to localize components of reactions and pathways They contain a higher concentration of cholesterol than the surrounding membrane They contain a higher concentration of glycolipids than the surrounding membrane Lipid composition (i.e. the % of each type of lipid) of a membrane often differs (Select any/all that apply) OAt different locations in the cell (i.e. in different organelles) In...
40.Fatty acid synthase is an enzyme in the lipid metabolism pathway, that: A. occurs in the...
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01. Transamination is a biochemical reaction by which the –NH2 group of one amino acid is...
01. Transamination is a biochemical reaction by which the –NH2 group of one amino acid is transferred to another alpha-ketoacid for preparation of a new amino acid. This reaction is catalyzed by the transaminase, which uses _____ as a cofactor for formation of the catalytic intermediate _______ base. Select one: a. TPP ;;;; Lewis b. TPP ;;;; Schiff c. PLP ;;;; Lewis d. PLP ;;;; Schiff e. None of these
01. Transamination is a biochemical reaction by which the –NH2 group of one amino acid is...
01. Transamination is a biochemical reaction by which the –NH2 group of one amino acid is transferred to another alpha-ketoacid for preparation of a new amino acid. This reaction is catalyzed by the transaminase, which uses _____ as a cofactor for formation of the catalytic intermediate _______ base. Select one: a. TPP ;;;; Lewis b. TPP ;;;; Schiff c. PLP ;;;; Lewis d. PLP ;;;; Schiff e. None of these
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Which one of the following represents a tetrapeptide? A) Val-Ile-Asp-Asp B) Ala-Ala-Ala-Ala-Val-Val C) Ala-Ser-Val-Val-Ile D) Ser-Ser-Ala-Ala-Gly-Gly-Glu-Glu E) Ser-Ala-Thr-Pro-Leu In the octapeptide, Cys-Ile-Ser-Asp-Gly-His-Gly-Gly, which is the N-terminal amino acid A) Ser B) Ile C) Asp D) Cys E) Gly If an amino acid has one carboxyl group and one amino group, and the pka's are 2.4 and 9.8 respectively, what is its isoelectric point? A) 3.7 B) 6.1 C) 7.0 D) 7.9 E) 12.2 Which of the following will migrate toward...
47. Active transport of solutes is mediated by and in plant and animal cells, respectively A....
47. Active transport of solutes is mediated by and in plant and animal cells, respectively A. H-pump and Ca-pump B. K-pump and Ca-pump C. Na-pump and H'-pump D. H-pump and Na"-pump E. C & D 48. One is NOT TRUE about integral membrane proteins. A. They can move inside the lipid bilayer B. Their hydrophobic amino acid side chains face the lipid bilayer C. Their hydrophilic amino acids form the hydrophilic pore D. They can easily by separated from the...
Which of the following describes the pI of an amino acid? Select one: Oa. the pH...
Which of the following describes the pI of an amino acid? Select one: Oa. the pH at which the amino acid is primarily in the zwitterion form b. the pH at which there are equal concentrations of protonated and neutral forms c, the negative log of the concentration of the ionized amino acid d. the pH of the buffer solution used in electrophoresis that causes the amino acid to migrate to the positive electrode 0 O
asnwer Q as Short answers :: 1/The backbone structure common to all sphingolipids is: Select one:...
asnwer Q as Short answers :: 1/The backbone structure common to all sphingolipids is: Select one: A. Lysophosphatidate B. Sugar residue C. Choline D. Ceramide E. Phosphatidate 2/Which of the following is a secondary bile acid/salt? Select one: A. Deoxycholate B. Chenodeoxycholate C. Taurochenodeoxycholate D. Cholate E. Glycocholate 3/Name the substrate of glycogenin. 4/Which of the following enzymes catalyzes the synthesis of deoxyribonucleotides? Select one: A. Dihydrofolate reductase B. Nucleoside diphosphate kinase C. Ribonucleotide reductase D. Thymidylate synthase E. Adenylate...
In the octapeptide, Phe-Ile-Ser-Asp-Gly-Haus-Gly-Tyr, which is the C-terminal amino acid? A) Ser B) Phe C) Tyr D) His E) Gly D) Which molecule is an a-amino acid? A) CH CH3CH2CHCHCOZH NH CH CH2CH2CHCHCONH, CH, ICHCONH B) E) CH, CHYCH,CHCHCO,H CN CH, CH3CH2CHCHNH2 NH2 C) CH CH, CH2CHCHCO,H NH
Classify the molecule shown a. Steroid b. Glycerophospholipid c. Fatty acid d. Triacylglycerol e. Sphingomyelin
Which of the following is NOT true of lipid rafts? The are less fluid than the surrounding membrane The can serve to localize components of reactions and pathways They contain a higher concentration of cholesterol than the surrounding membrane They contain a higher concentration of glycolipids than the surrounding membrane Lipid composition (i.e. the % of each type of lipid) of a membrane often differs (Select any/all that apply) OAt different locations in the cell (i.e. in different organelles) In...
40.Fatty acid synthase is an enzyme in the lipid metabolism pathway, that: A. occurs in the mitochondrion in animal cells, 2 nor Section A B. utilises NADH as an electron donor C) requires NADPH as a substrate. D. requires acetic acid as a substrate. E. consists of a single multifunctional protein in plants and bacteria. 41.One round of beta oxidation produces 1 molecule of acetyl-CoA from a saturated Acyl-CoA molecule. Which reducing equivalents are made in this process in which...
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47. Active transport of solutes is mediated by and in plant and animal cells, respectively A. H-pump and Ca-pump B. K-pump and Ca-pump C. Na-pump and H'-pump D. H-pump and Na"-pump E. C & D 48. One is NOT TRUE about integral membrane proteins. A. They can move inside the lipid bilayer B. Their hydrophobic amino acid side chains face the lipid bilayer C. Their hydrophilic amino acids form the hydrophilic pore D. They can easily by separated from the...
Which of the following describes the pI of an amino acid? Select one: Oa. the pH at which the amino acid is primarily in the zwitterion form b. the pH at which there are equal concentrations of protonated and neutral forms c, the negative log of the concentration of the ionized amino acid d. the pH of the buffer solution used in electrophoresis that causes the amino acid to migrate to the positive electrode 0 O
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