Which one of the following is the correct description of a certain part of a normal human skeleton?

• Parietal bone and the temporal bone of the skull are joined by fibrous joint

• First, vertebra is axis, which articulates with the occipital condyles

• The 9th and 10th pairs of ribs are called the floating ribs

• The 9th and 10th pairs of ribs are called the floating ribs

Elbow joint is an example of 

• pivot joint

• hinge joint

• gliding joint

• gliding joint

Which one of the following are the correct pairing of a body part and the kind of muscle tissue that moves it?

• Heart wall - Involuntary unstriated muscle

• Biceps of upper arm - smooth muscle fibres

• Abdominal wall - Smooth muscle

• Abdominal wall - Smooth muscle

Keeping in view the 'fluid mosaic model' for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop moment)?

• Both lipids and proteins can flip-flop

• While lipids and proteins can flip -flop

• While proteins can flip-flop, lipids cannot

• While proteins can flip-flop, lipids cannot

Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to

• Coelomic fluid

• blood

• gut peristalsis

• gut peristalsis

Which one of the following items gives its correct total number? 

• Floating ribs in humans - 4 

• Amino acids found in proteins - 16

• Types of diabetes - 3 

• Types of diabetes - 3 

In human body, which one of the following is anatomically correct?

• Floating ribs - 2 pairs

• Collar bones - 3 pairs

• Salivary glands - 1 pair

• Salivary glands - 1 pair

Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism

• casuarina equisetifolia

• crotalaria juncea

• cycas revoluta

• cycas revoluta

139.

Which of the following is an example of negative feedback loop in humans?

• constriction of skin blood vessels and contraction of skeletal muscles when it is too cold

• secretion of tears after falling of sand particles into the eye

• salivation of mouth at the sight of delicious food

• salivation of mouth at the sight of delicious food

The contractile protein of skeletal muscle involving ATPase activity is

• tropomyosin

• myosin

• α-actinin

• α-actinin