The pigment that absorbs light energy and gives green color to plants is: MCQ with Answer and Explanation

Explanation:
Restriction enzymes (restriction endonucleases) are molecular 'scissors' that cut DNA at specific, highly specific recognition sequences (palindromic sequences). They are essential tools in genetic engineering for cutting both the source DNA (gene of interest) and the vector DNA at specific sites, creating compatible ends for ligation. DNA ligase is used to join the fragments.

Explanation:
Urine specific gravity, a measure of solute concentration, normally ranges from 1.015 to 1.030. It varies with hydration status: low when dilute (after drinking), high when concentrated (dehydration). Diabetes insipidus shows low SG, diabetes mellitus may show high due to glucose.

Explanation:
After ovulation, the ruptured Graafian follicle transforms into a temporary endocrine structure called the corpus luteum. Its primary function is to secrete large amounts of progesterone (and some estrogen). Progesterone is crucial for maintaining the thickened, highly vascularized uterine endometrium (secretory phase), making it receptive for the implantation of a blastocyst. If fertilization does not occur, the corpus luteum degenerates, progesterone levels drop, and menstruation begins.