MCQ
Oxygen is transported by
- ABlood plasma
- ✓$RBCs$
- CLeucocytes
- DThrombocytes
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| List-l | List-II |
| (A) Gene 'a' | (I) $\beta-$galactosidase |
| (B) Gene 'y' | (II) Transacetylase |
| (C) Lactose | (III) $\beta-$galactosides |
| (D) Gene 'z' | (IV) Repressor protein |
Aves, terrestrial snail, marine fishes, Many bony fishes, Mammals
| (a) Tight junctions | (i) Cement neighbouring cells together to form sheet |
| (b) Adhering Junctions | (ii) Transmit information through chemical to another cells |
| (c) Gap junctions | (iii) Establish a barrier to prevent leakage of fluid across epithelial cells |
| (d) Synaptic junctions | (iv) Cytoplasmic channels to facilitate communication between adjacent cells |
Select correct option from the following
$(1)$ Urine is hypertonic is distal convoluted tubule
$(2)$ When the urine passes into collecting tubule, it becomes hypotonic
$(3)$ Urine is isotonic in proximal convoluted tubule
$(4)$ Urine becomes more and more hypotonic as it passes through Henle’s loop