Q. Which one of the following is the correct matching of three items and their grouping category? Item Group
A) [table] Malleus, incus, cochlea | Ear ossicles [/table]
B) [table] Ilium, ischium, pubis | Coxal bones of pelvic girdle [/table]
C) [table] Actin, myosin, rhodopsin | Muscle proteins [/table]
D) [table] Cytosine, uracil, thiamine | Pyrimidines [/table]
Explanation
There are found total five nitrogenous bases in nucleic acids. Out of these adenine, guanine (purines) and cytosine, thymine (pyrimidines) are present in DNA, while RNA contains uracil in place of thymine (both pyrimidines) along with rest 3 similar to DNA.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.