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Heat and water loss in animals is proportional to the ratio of their surface area to volume. Imagine a spherical cow. When the radius of the cow doubles, its surface […]

Imagine that you are looking at one cancer cell under the microscope, and trying to estimate the probability that it will die due to a chemotherapy regime. You know that […]

A mammalian cell typically has 1.2 meters (when completely outstretched) of double stranded DNA. The total time to duplicate the DNA is 5 hours. How many origins of replication are […]

If a healthy individual has a probability of 0.5 to contract COVID when s/he comes in contact with 1 COVID-positive individual, then what is the probability that the healthy individual […]

Identify the odd one out Nipah Covid-19 Small Pox Rabies Smallpox is the odd one out among Nipah, COVID-19, Smallpox, and Rabies because it is the only disease officially eradicated […]

Bacterial cell membrane is composed of an almost equal amount of protein and lipids. Assuming a bacterial cell as a sphere of diameter 2 micrometer, approximately how many lipids molecules […]

A hypothesis is a statement that is: A best guess about a particular process Provable using experiments Testable using experiments Can neither be proved or disproved A hypothesis is testable using […]

Many of the world’s deserts occur in two bands centred at around 30˚N and 30˚S latitude. This can be explained by Patterns of continental drift Patterns of atmospheric circulation above […]

If only two nucleotides A and G occur in a 4-base pair DNA sequence, how many such sequences are possible? 4 8 16 32 Number of Sequences For a 4-base […]

For a normal distribution, if the mean is doubled, how does the area under the curve change? Doubles Halves Need standard deviation to estimate area Remains same Correct Answer Explanation […]