Question

A few molecules /parts are grouped into categories. Identify the incorrect grouping

• A. Actin, myosin, rhodopsin $\to$ sarcomere
• B. Cytosine, thymine, uracil $\to$ pyramidines
• C. Malleus, incus, cochlea $\to$ ear ossicles
• D. Ilium, ischium, pubis $\to$ bones of pectoral girdle

Answer 1

The correct option is A Actin, myosin, rhodopsin $\to$ sarcomere

Actin and myosin molecules are found in the sarcomere. Rhodopsin is a visual pigment in rods of retina.
The ear ossicles have 3 bones malleus, or hammer, the incus, or anvil, and the stapes, or stirrup.
The pyrimidine nitrogen bases found in DNA and RNA. The pyramidine bases are Cytosine, thymine, uracil.
The hip bone is made up of the three parts – the ilium, pubis and ischium.