During non-cyclic photophosphorylation, when electrons are lost from the reaction centre at \(PS\) \(II\), what is the source which replaces these electrons?

In an inducible operon, the genes are

Match List \(- I\) with List \(- II\) with respect to methods of Contraception and their respective actions.

List\(-I\)	List \(- II\)
\((a)\) Diaphragms	\((i)\) Inhibit ovulation and Implantation
\((b)\) Contraceptive	\((ii)\)  Increase phagocytosis of sperm within Uterus
\((c)\) Intra Uterine Device	\((iii)\) Absence of Menstrual cycle and ovulation following parturition
\((d)\) Lactational	\((iv)\) They cover the cervix blocking the entry of sperms

Choose the correct answer from the options given below:

Which of the following statements with respect to Endoplasmic Reticulum is incorrect?

Identify the wrong statement with regard to Restriction Enzymes.

Which of the following statements are correct with reference to a transcription unit ?
A. A transcription unit in DNA is defined primarily by three regions : promoter, structural gene and terminator.
B. The promoter is said to be located towards the \(5^{\prime}\)-end of the structural gene.
C. The promoter is a DNA sequence that provides binding site for RNA polymerase.
D. The promoter defines the template and coding strands.
E. The terminator is located towards the \(3^{\prime}\)-end of the coding strand and it defines the end of the process of transcription.
Choose the correct answer from the options given below :

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the which Kingdom?

Two heaters \(A\) and \(B\) have power rating of \(1 \mathrm{~kW}\) and \(2 \mathrm{~kW}\), respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is:

The radius of circle the period of revolution initial position and sense of revolution are indicated in the figure. \(y-\)projection of the radius vector of rotating particle \(\mathrm{P}\) is

Mad cow disease in catttle is caused by an organism which has

The \(IUPAC\) name of the compound is _________.

A screw gauge gives the following readings when used to measure the diameter of a wire Main scale reading : \(0 \,\mathrm{~mm}\) Circular scale reading \(: 52\) \(divisions\) Given that \(1\, \mathrm{~mm}\) on main scale corresponds to \(100\, divisions\) on the circular scale. The diameter of the wire from the above data is ...... \(cm\)

An astronomical refracting telescope is being used by an observer to observe planets in normal adjustment. The focal lengths of the objective and eye piece used in the construction of the telescope are \(20\,m\) and \(2\,cm\) respectively. Consider the following statements about the telescope : \((a)\) The distance between the objective and eye piece is \(20.02\; m\) \((b)\) The magnification of the telescope is \(1000\) \((c)\) The image of the planet is erect and diminished \((d)\) The aperture of eye piece is smaller than that of objective The correct statements are :