Consider the following statements about antibodies: 1. They are produced by T-lymphocytes. 2. They are also called immunoglobulins. 3. They specifically bind to antigens. Which of the above is/are correct? MCQ with Answer and Explanation

Explanation:
Light reactions occur in the thylakoid membranes, where photosystems I and II, electron transport chains, and ATP synthase are located. Light energy is captured to produce ATP and NADPH and split water. The Calvin cycle (light-independent) occurs in the stroma.

Explanation:
Robert Brown, a Scottish botanist, discovered and named the nucleus in 1831 while studying orchid epidermal cells. Hooke coined 'cell', Schleiden and Schwann formulated cell theory. Brown's observation was pivotal.

Explanation:
Genetic engineering involves the direct manipulation of an organism's genome, often used to create transgenic organisms that contain foreign DNA (transgenes) for desired traits. Cloning is the process of producing genetically identical copies of a biological entity, ranging from genes to entire organisms. Tissue culture (micropropagation) is widely used for the rapid, large-scale propagation of plants from small explants in a sterile medium; it is not exclusively or primarily used for animal cloning. Thus, statements 1 and 2 are correct.