The four covalent bonds in methane (CH4) are arranged around carbon to give which one of the following geometries?

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#Question id: 7245

#Unit 5. Developmental Biology

Gradients of Wnt are essential for normal regeneration of a head and a tail by planaria. Which one of the following statement is incorrect?

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#Question id: 15595

#Unit 8. Inheritance Biology

How might the function of extracellular endonucleases help protect the bacterium from infection by viruses?

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#Question id: 7481

#General Aptitude

What is the angle between minute hand & hour hand of a clock, when the time is 11:58?

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#Question id: 11086

#Unit 7. System Physiology – Animal

A 17-year-old female was bicycling without a helmet when she fell and hit her head. In the emergency room, she was not conscious and was receiving ventilator assistance. Her blood gases follow:

PaO2 = 52 mm Hg,

PaCO2 = 75 mm Hg, pH = 7.15, and

HCO3− = 31 mM

The majority of the CO2 was being transported as

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#Question id: 351

#Unit 1. Molecules and their Interaction Relevant to Biology

 If the cytoplasm of a cell is at pH 7, and the mitochondrial matrix is at pH 8, then the concentration of H+ ions ________.