Lysozyme is an enzyme that destroys bacterial cell walls. It does so by hydrolyzing the β(1→4) glycosidic linkages from N- acetylmuramic acid (NAM or MurNAc) to N- acetylglucosamine (NAG or GlcNAc) in cell wall peptidoglycans. The only functional groups in the immediate vicinity of lysozyme’s reactive center that have the required catalytic properties are the side chains of Glu 35 and Asp 52.

a- Glu perform reaction in its protonated state and Asp perform reaction in its deprotonated state. 

b- Glu perform reaction in its deprotonated state and Asp perform reaction in its protonated state. 

c- both in its protonated form

d- both in its deprotonated form 

Choose the correct option?

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#Question id: 23613

#General Aptitude

If P + Q means P is the brother of Q; P ×Q means P is the father of Q and P − means P is the sister of Q, which of the following relations shows that I is the niece of K?

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#Question id: 12756

#Unit 10. Ecological Principles

Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.

The most likely cause for the shift in caterpillar peak mass is

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#Question id: 11673

#Unit 7. System Physiology – Animal

Low selectivity of solute movement is a characteristic of ________.

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#Question id: 1277

#Unit 4. Cell Communication and Cell Signaling

Cadherin cellular adhesion molecules promote:

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#Question id: 5244

#Unit 8. Inheritance Biology

Transformation can used to map bacterial gene, which of the following statement is correct?