$$ \text { Match List I with List II: } $$
| $$ \text { List I } $$ |
$$ \text { List II } $$ |
||
|---|---|---|---|
| A. | Molluscs | I. | Pulmonary respiration only |
| B. | Reptiles | II. | Branchial respiration |
| C. | Adult amphibians | III. | Cellular respiration |
| D. | Amoeba | IV. | Pulmonary and cutaneous respiration |
A-II, B-I, C-IV, D-III
A-I, B-II, C-IV, D-III
A-II, B-I, C-III, D-IV
A-III, B-II, C-I, D-IV
The sixth mutant codon of beta globin gene causing polymerization of Haemoglobin and change in RBC shape is $\_\_\_\_$
GUG
AUG
GAG
CAG
Choose the correct statements regarding muscle contraction.
A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre.
B. The neural signal generates an action potential which causes the release of $\mathrm{Ca}^{++}$into sarcoplasm.
C. Increase in $\mathrm{Ca}^{++}$inactivates the actin for breaking cross bridges.
D. Actin binds to the myosin head to form a cross bridge.
E. Shortening of sarcomere takes place, by pulling actin filaments towards the centre of ' A ' band.
Choose the correct answer from the options given below :
C and D only
A and B only
C and E only
A, B, D and E only
Which of the following statements are correct with reference to human endoskeleton?
A. Human skull is monocondylic.
B. The joint between any two adjoining vertebrae is a cartilaginous joint.
C. In human beings, the number of cervical vertebrae is seven.
D. All ribs except the last 2 pairs are bicephalic.
E. The occipital bone of skull is articulated with atlas vertebra.
Choose the correct answer from the options given below:
B and E only
B, C and E only
C, D and E only
A, B and D only
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