Assertion: Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed movements.

Reason: There are three principal types of protein filaments - microfilaments, microtubules and intermediate filaments, which constitute the cytoskeleton.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

82.

Which one of the following is a sesamoid bone?

• Pelvis

• Patella

• Pterygoid

• Pectoral girdle

During muscle contraction

• size of 'A' bands remain same

• size of 'H' zone becomes smaller

• size of 'I' band decreases

• diameter of fibre increases

The main difference between white and yellow fibres is of

• protein

• colour of fibres

• both (a) and (b)

• none of the above

Metha Jahar which is useful in rheumatism is obtained from

• Aconitum napellus

• Colchicum

• Exogonium

• Licorice

Ball and socket joints can be seen in

• wrist 

• fingers

• neck

• shoulders

Which ribs show 'bucket-handle' type of movement?

• Rib no. 1-2

• Rib no. 3-5

• Rib no. 6-10

• Rib no. 11-12

State two differences between red and white muscles.

Osteomalacia is a disease caused by the deficiency of

• calciferol

• tocopherol

• retinol

• phylloquinone

Collagen is a

• phosphoprotein

• globulin

• derived protein

• scleroprotein