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1. The glycosidicbonds in amylopectinare:
A. (a 1-2 ; b1-6)
B. (b 1-2 ; a 1-6)
C. (a 1-4 ; b 1-6)
D. (b 1-4 ; a 1-6)
E. (a 1-4 ; a1-6)
2. Iodine binds to:
E. None of the above is correct
3. The attachment of complex branched carbohydrate chains to serine, threonine or asparagine residues in proteins by enzymes is called:
E. None of the above is correct.
4. A thick layer of peptidoglycan is found in:
A. Gram negative bacteria
B. Gram positive bacteria
C. Both Gram negative and Gram positive Bacteria
D. Neither Gram negative nor Gram positive bacteria
E. Animal cells.
5. The carbohydrate shown below is:
B.b-D-galactopyranosyl (1-4) b-D-glucopyranose
C.b-D-galactopyranosyl (1-4) a-D-glucopyranose
D.b-D-glucopyranosyl (1-4) a-D-galactopyranose
E.b-D-galactofuranosyl (1-4) a-D-glucofuranose
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1. The glycosidicbonds in amylopectinare: A. (a 1-2 ; b1-6) B. (b 1-2 ; a 1-6) C. (a 1-4 ; b 1-6)...
whereas dephosphorylation by 12. Phosphorylation of a protein by a requires requires a. Protein kinase, ATPprotein phosphatase, water b. Protein kinase water: protein phosphatase; ATP c. Protein kinase, ATP, protein phosphatase: ADP d. Protein phosphatase: ATP: protein kinase; ADP e. None of the above 13. How many phosphoester and phosphoanhydride bonds are in Z-deoxyadenosine diphosphate? b. 1,2 c.0.1 d. 1,0 6.2.0 14. Give the systematic name of the sugar below Lactose a. a-D-galactopyranoyl-(1.4)--D-glucopyranose b.a-D-glucopyranosyl-(1.4)-1-D-galactopyranose CB-D-glucopyranosyl-(1,5)- -D-glucopyranose d.B-D-galactopyranosyl-(1,5)- G-D-glucopryanose e -D-galactopyranosyl-(1.4)--D-glucopryanose...
43.Lipopolysaccharides (LPS) are found in: a. Gram-positive bacteria b. Gram-negative bacteria c. all Bacteria d. Archaea e. Eukaryotes ------------------------- 44. There are similarities and differences between Gram-negative and Gram-positive bacteria. Which of the following is not true? a. The cell wall of Gram-negative cells is composed of only one or two layers of peptidoglycan whereas the cell walls of Grampositive bacteria have many peptidoglycan layers b. Only Gram-positive bacterial cells have a periplasm 2/6/18 8 c. The cell membranes of...
CH401 Biochemistry I Homework Assignment #6, Carbohydrates 1. Indicate whether each of the following pairs of sugars consists of anomers, epimers, enantiomers, or none of these relationships. a. D-glyceraldehyde and dihydroxyacetone. annos b. D-glucose and D-mannose - epimers c. D-erythrose and L-erythrose er m ers d. a-D-glucose and B-D-glucose - enoshowers e. D-ribose and D-arabinose - f. D-galactose and D-glucose - 2. What does the enzyme mutarotase catalyze? Show by an equation using the glucose isomers. 3. Draw the Haworth...
ne contains pigments for B. Glycocalyx C. Chromatophores D. Teichoic acids E. Fimbriae F. Nucleoid G. NAA H. Flagellin I. P lasmids J. Phospholipids K. Ribosomes L. Endospores M. NAM photosynthetic bacteria found in plasma membrane 2. found in gram-positive cell wall sticky carbohydrate outside cell wall used for attachment and avoiding phagocytes 4 numerous, short hair-like appendages that help bacterial cells attach to other cells. 5, , specialized structures assist in transfer of genetic material between cells 6 structure...
Cell Structure and Function: 1. What is the basic structure of the cytoplasmic membrane, and what are its three critical roles in bacteria? (5) 2. What is the role of peptidoglycan in the cell, what are the two polysaccharides which make up the backbone, and what is the advantage for a cell lacking peptidoglycan? (4) 3. What is the difference between Gram-negative and Gram-positive Bacteria in the crosslinking of peptidoglycan? (2) 4. How and why does the Gram stain differentially...
4 and 5 .320dit-C to arriol 92006Tyq bris 92001Tt- od ws7C. obitedoobeib gniwollot dt hot (mot toda bas gftol) smise pitbra1912y2 9dt svið .a но,НО HO,HO HO HO CH401 Biochemistry I Homework Assignment #6, Carbohydrates 1. Indicate whether each of the following pairs of sugars consists of anomers, cpimers, enantiomers, or none of these relationships. a. D-glyceraldehyde and dihydroxyacetone - anomos b. D-glucose and D-mannose - epimers c. D-erythrose and L-erythrose - er hurts d. a-D-glucose and B-D-glucose - ena...
Gram-positive and gram-negative bacteria differ in that A. Gram-positive bacteria have more peptidoglycan in their cell walls. B. Gram-positive bacteria have fimbriae but gram-negative bacteria do not. C. Gram-positive bacteria are spiral-shaped, and gram-negative bacteria are either rod-shaped or spherical. D. Only gram-negative bacteria can form endospores. E. There is no difference between gram negative and gram positive bacteria F. Gram positive are positively charged and gram negative are negatively charges An unknown bacterial species was found in the blood...
1) Without prokaryotes... a) much decomposition in the soil would stop b) PCR would be much more difficult to do c) plants would have fewer nutrients to absorb d) there would be less methane in the world e) all of the above would occur 2) Which is least likely associated with prokaryotes? a) nitrogen fixation b) botulism c) methane production d) total global photosynthesis 3) Genetic variation in bacterial populations cannot result from: a) transduction b) transformation c) conjugation d)...
29) The peptidoglycan chain is made up of polymers of a) alanine and glycine b) cytosine and guanine e) glucose and ribose d) ATP and protein N-acetylmuramic acid and N-acetylglocosamine 30) Safranin is a counterstained used in the gram stain procedure because a) cells will not stain gram positive without it b) safranin accentuates the gram positive stain the gram negative cells will be unstained otherwise d) the purple color is hard to see in the microscope e) all of...
help thank you 4. Levine EMB agar is used to culture a. Gram positive bacteria b. Gram negative bacteria C. Gram positive facultative anaerobes d. Gram negative obligate anaerobes