1. Applicable to the cell wall –
A. Its initiation occurs during cytokinesisB. When primary wall dissolves, two cells separateC. Leaves, fruits and cortex generally contain only secondary wallsD. Golgi body plays a role in cell wall formation
2. mRNA is bound to tRNA at-
A. Amino acid armB. Anticodon armC. T-armD. D-arm
3. Which has the correct bond angle?
A. H2S → 94∘B. H2O → 107.5∘C. P H3 → 96∘D. NF 3 → 102.5∘
4. Daughter could be color-blind if-
A. Mother and father both healthyB. Mother and father both carriersC. Mother healthy, father color-blindD. Mother carrier, father color-blind
5. Which pair is not correct for blood vessel?
A. Tunica adventitia → Connective tissueB. Tunica media → Muscular layerC. Tunica intima → Nervous tissueD. Tunica intima → Endothelium
6. Which acts as both oxidant and reductant?
A. AmmoniaB. Nitrogen peroxideC. Nitric acidD. Nitrous acid O3, SO2, H2SO3, F eSO4, HNO2, NO, H2O2