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Prokaryotes have: a. naked RNA b. naked DNA c.  enclosed RNA d. neither RNA nor DNA               ANS :- b. naked DNA {All the cell possess RNA so that it could carry out biological activities. So the things to matter in this question is the case of presence of DNA. However all prokaryotes do not possess DNA but there are several prokaryotes that contains DNA(for e.g. eubacteria do posses circular DNA and they are prokaryotes.) . Prokaryotes have incipient nucleus so it is clear that if Prokaryotes possess DNA then it would be naked instead being enclosed by nucleus.).                        😁😁     BE HAPPY😁😁

TO PROVE:     Sec 4 A – tan 4 A = 1 + 2tan 2 A Solution:    L.H.S= sec 4 A – tan 4 A              = (sec 2 A – tan 2 A)(sec 2 A + tan 2 A)              =    1 ( sec 2 A +  tan 2 A)                                              =   sec 2 A + tan 2 A              =    1 + tan 2 A + tan 2 A              =    1 + 2tan 2 A              = R.H.S Hence,proved     ...

In triangle ABC, b=7cm, c=10 cm and angle A=30 degree, find the area of a  triangle ABC. ​ ANS:-                                                                          ​ AREA = ½*(product of adjacent sides)*sin α ​ Where ​ 1. P  is the product of any two  adjacent sides of  a triangle  ​ 2.α is the angle  between the considered adjacent sides      ​ ​ NOW,  We have; ​ AREA= ½*7*10*sin 30° ​ =½*7*10*½ ​ =70/4            ​  =17.5 sq. cm ​ NOTE: Further queries can be asked   over comment section .                                                         ​ ​ ​ ​   ...