Calcium is important in skeletal muscle contraction because it Option 1 : Activates the myosin ATPase by binding to it.Option 2 : Detaches the myosin head from the actin filament.Option 3 : Prevents the formation of bonds between the myosin cross bridges and the actin filament.Option 4 : Binds ...

Which of the following is an occupational respiratory disorder? Option 1 : BotulismOption 2 : AnthracisOption 3 : EmphysemaOption 4 : Silicosis

All of the following are part of an operon except Option 1 : An operatorOption 2 : An enhancerOption 3 : Structural genesOption 4 : A promoter

AGGTATCGCAT is a sequence form the coding strand of a gene. What will be the corre- sponding sequence of the transcribed mRNA? Option 1 : AGGUAUCGCAUOption 2 : ACCUAUGCGAUOption 3 : UGGTUTCGCATOption 4 : UCCAUAGCGUA

According to Hugo de Vries, the mechanism of evolution is Option 1 : Minor mutationsOption 2 : Multiple step mutationsOption 3 : Phenotypic variationsOption 4 : Saltation

Which of the following terms describe human dentition? Option 1 : Pleurodont, Monophyodont, HomodontOption 2 : Thecodont, Diphyodont, HomodontOption 3 : Pleurodont, Diphyodont, HeterodontOption 4 : Thecodont, Diphyodont, Heterodont

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as Option 1 : NucleosomeOption 2 : PolysomeOption 3 : PlastidomeOption 4 : Polyhedral bodies

Nissl bodies are mainly composed of Option 1 : Proteins and lipidsOption 2 : Nucleic acids and SEROption 3 : Free ribosomes and REROption 4 : DNA and RNA

Column IColumn II(a) Tricuspid valve(i) Between left atrium and left ventricle(b) Bicuspid valve(ii) Between right ventricle and pulmonary artery(c) Semilunar valve(iii) Between right atrium and right ventricleOptions: (a)          (b)        (c)(a)   (iii)       (i) (ii)(b)     ...

Which of the following events does not occur in rough endoplasmic reticulum? Option 1 : Protein glycosylationOption 2 : Protein foldingOption 3 : Cleavage of signal peptideOption 4 : Phospholipid synthesis Correct answer are both Option 1 and 4.