7 Penicillin is an inhibitor of a peptidoglycan synthesis c. the enzyme transpep

Question

7 Penicillin is an inhibitor of a peptidoglycan synthesis c. the enzyme transpeptidase d both (a) and (c) e. both (b) and (c) 8 Proteins known as lectins perform what function? a Regulation of phosphofructokinase b. Recognition of specific oligosaccharide structures c. Hydrolysis of specific glycosidic linkages d. Transport of glycoproteins into the blood stream e. Transport of sugars into cells Answer the following three questions based on the structure on the right 9. The molecular structure shown here represents the following polysaccharide 10. This polysaccharide is a a amylose b.cellulose c heparin d. chitin e agarose made up of a. homopolymer; N-acetyl-D-glucosamine b. homopolymer; N-acetyl-D-galactosamine d. heteropolymer, N-acetyl-D-glucosamine and N-acetyl-D-galactosamine e. heteroplolymer, N-acetyl-L-glucosamine and N-acetyl-L-galactosamine 11. The glycosidic linkagels) found in this polymer is/are: a. ?14 c.?14 and al-4 d.?1-6 e al-6 and B1-4 12. Give the systematic name of the sugar below. ?? Ho ??? OH OH Lactose a. ?-D-galactopyranoyl-(1,4)-?-Dalucopyranose b. a-D-glucopyranosyl41,4)-B-D-galactopyranose c. ?-Dglucopyranosyl-( 1,5-a-D-glucopyranose d. p-D-galactopyranosyl-(1,5)-a-D-glucopryanose e. ?-D galactopyranosyl-(1,4)-?-D-glucopryanose 13. What is the name of the nucleoside on the right? a. deoxycytidine b. deoxyuridine c. cytidine d. uridine e. adenine OH 14. Select the phrase that is false when describing the DNA double helix. a. Base pairs have a spacing of 3.4A b. A helical turn consists of about 3.4 base pairs. c. The phosphodlester bonds between nucleotide residues run in opposite directions in the two strands. d. DNA contains equal amounts of adenine and thymine. e. DNA contains equal amounts of cytosine and guanine.

Explanation / Answer

7) )d both a and c

They inhibit the enzyme transpeptidase which is involved in transpeptidation of peptidoglycan. Thus cell wall formation process is distubed.

8)b recognition of certain oligosaccharide structures

9) d chitin

10)a homopolymer, N-acetyl-D-glucosamine molecules.

11)a beta-1,4 linkage

Chtitin is the primary component of the hard outer shell of arthropods and insects. It is a modified polysaccharide that contains nitrogen. it is synthesized from units of N-acetyl-D-glucosamine molecules.

Homopolymers are polymers made up of repeating units of a single monomer.

It has a beta-1,4 linkage

please ask questions separately and not all at once

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.