A. Each Okazaki fragment is synthesized by a new alternating core polymerase.

B. When synthesis of one Okazaki fragment is completed, synthesis of the next Okazaki fragment starts close to fork

C. Each Okazaki fragment is synthesized by a new primer reaction

D. Bonafide Okazaki fragments size is conserved among prokaryotes to eukaryotes

Choose true and false

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#Question id: 13150

#Unit 8. Inheritance Biology

A fruit fly Drosophila melanogaster showing  three point test cross  st+-e+-ss+  was crossed with triplet recessive mutant st-e-ss. The F1 hybrid  was the backcross with the recessive mutant and the phenotype recorded as follows;

The distance in map unit (mu) between  st+  to  e+ and e+ to ss+ is

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#Question id: 13151

#Unit 8. Inheritance Biology

A series of two-point crosses were carried out among five loci (a, b, c, d and e) producing the following recombination frequencies. Using these recombination frequencies, map these five loci, showing  their linkage groups, the order of the loci in each linkage group is;

What is the correct order of the loci?

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#Question id: 13153

#General Aptitude

The in-radius of an equilateral triangle is of length 3 cm. Then the length of each of its medians is

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#Question id: 13154

#Unit 2. Cellular Organization

In starving cells, however, such degradation would deplete essential enzymes and regulatory proteins. Lysosomes therefore also have a selective pathway, which is activated only after a prolonged fast, that imports and degrades cytosolic proteins containing the pentapeptide  , the sequence is

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#Question id: 13155

#Unit 2. Cellular Organization

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: 13156

#Unit 2. Cellular Organization

Tay sach;s disease are caused when which enzyme is mutated or non-functional?