Practice Questions

TLS Online TPP Program

#Question id: 4567

Charles Darwin was the first person to propose

#11. Evolution and Behavior

that evolution occurs.
a mechanism for how evolution occurs.
that the Earth is older than a few thousand years.
a mechanism for evolution that was supported by evidence.

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TLS Online TPP Program

#Question id: 23145

#13. Methods in Biology

A chemical is said to be fluorescent if it absorbs light at one wavelength (excitation) and emits light (fluoresces) at a specific

TLS Online TPP Program

#Question id: 23146

#13. Methods in Biology

A phenomenon of absorption of light at a certain wavelength and then emission at longer wavelength is known as

TLS Online TPP Program

#Question id: 23147

#13. Methods in Biology

In fluorescence microscopy why the fluorescence occurs at longer wavelength when there shorter wavelength of light is applied?

TLS Online TPP Program

#Question id: 23149

#13. Methods in Biology

In fluorescence microscopy a usually used fluorochrome that is fura-2 is sensitive to which ions?

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#Question id: 23150

#13. Methods in Biology

How fura-2 dye moves inside the cell through plasma membrane?

TLS Online TPP Program

#Question id: 23153

#13. Methods in Biology

SNARF-1is a fluorescent dye used to measure which ion concentration?