Support and movement

Written by Dr. Hira Salman (Biology)

Class 12 · Biology · 8 questions

Name: ____________________   Date: ____________

1. Muscle contraction involves the sliding of:

   • A Cellulose and chitin
   • B Actin and myosin
   • C Insulin and glucagon
   • D Collagen and keratin

2. The energy for muscle contraction comes directly from:

   • A Calcium alone
   • B ATP
   • C Water
   • D Oxygen alone

3. Joints that allow movement in all directions are:

   • A Hinge joints
   • B Pivot joints only
   • C Fixed joints
   • D Ball and socket joints

4. Cartilage is found at the:

   • A Inside red blood cells
   • B Teeth only
   • C Surface of the skin
   • D Ends of bones in joints

5. Lack of calcium and vitamin D in children causes:

   • A Beriberi
   • B Night blindness
   • C Rickets
   • D Scurvy

6. The type of muscle found in the heart is:

   • A Smooth muscle
   • B Skeletal muscle
   • C Striated voluntary muscle
   • D Cardiac muscle

7. The functional unit of a skeletal muscle fibre is the:

   • A Sarcomere
   • B Alveolus
   • C Neuron
   • D Nephron

8. Osteoporosis is a condition in which bones become:

   • A Too hard
   • B Weak and brittle
   • C Too wide
   • D Too long