The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is

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#Question id: 15603

#Unit 12. Applied Biology

Novel antibiotic can be made by

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#Question id: 27007

#Unit 10. Ecological Principles

Polyphagous parasites, usually complete their life cycle in two or more different host species and they also exhibit sexual reproduction . These types of host are,

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#Question id: 12704

#Unit 8. Inheritance Biology

Cytoplasmic male sterility (CMS) in plants is caused by mutation in the mitochondrial genome. CMS can be restored by a nuclear gene, restorer of fertility (Rf), which is a dominant character. 

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#Question id: 26440

#Unit 3. Fundamental Processes

Choose the correct statement 

a. Long patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, and APE1 

b. Long patch repair system is accomplished by Lig3, FEN1, Pol ξ β ,APE1 & lyase action

c. Short patch repair system is accomplished by Lig3, FEN1, Pol  ξ β,APE1 & lyase action

d. Short patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, , and APE1

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#Question id: 2056

#Unit 4. Cell Communication and Cell Signaling

A mother has an Rh- and the father an Rh+ blood type. The first baby born to the parents was Rh+ . However, the parents elect for the mother not to receive Rhogam. future babies of this couple at risk for