Two trains are moving in opposite directions at 72 km per hour and 90 km per hour . Their lengths are 500 m and 400 m respectively. the time taken by the Slower train to cross the faster train is

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#Question id: 18663

#Unit 13. Methods in Biology

When a protein exists in mono-, di- and tri-phosphorylated forms. The difference of a couple of phosphate groups has no significant effect on the overall relative molecular mass of the protein, hence a single band on SDS gels, but the small charge difference introduced on each molecule can be detected by

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#Question id: 2539

#Unit 2. Cellular Organization

Which structure is common to plant and animal cells?

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#Question id: 11562

#Unit 7. System Physiology – Animal

The relationship between the insect hormones ecdysteroid and PTTH is an example of ________.

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#Question id: 1414

#Unit 4. Cell Communication and Cell Signaling

Which of the following genes encodes a caspase in C. elegans?

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#Question id: 5573

#Unit 5. Developmental Biology

Animals that have external fertilization are most likely to reproduce in which of the following areas?