TLS Online TPP Program

#Question id: 2285


Assuming all other factors to be the same, electron microscopes have greater resolving power than light microscopes because.

#Unit 2. Cellular Organization
  1. the wavelength of electrons is much longer than the wavelength of visible light

  2. electron microscopes have more lenses

  3. because the beams in electron microscopes overlap creating a clearer picture

  4. because the wavelengths in visible light are longer than with electrons

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TLS Online TPP Program

#Question id: 335

#Unit 1. Molecules and their Interaction Relevant to Biology

Suppose the major solutes in intact lysosomes are KCl (~0.1 M) and NaCl (~0.03 M). When isolating lysosomes, what concentration of sucrose is required in the extracting solution at room temperature (25 °C) to prevent swelling and lysis?

TLS Online TPP Program

#Question id: 15756

#Unit 12. Applied Biology

Synthetic seeds are produced by the encapsulation of somatic embryos with ___________.

TLS Online TPP Program

#Question id: 12705

#Unit 8. Inheritance Biology

In Neurospora crasssa, the mutant exhibit poky phenotype, when a female of  poky strain is crossed with a normal strain acting as a male , all progeny individuals shows poky phenotype . however, the reciprocal cross resulted in all normal progeny. These results can be explained on the basis of 

TLS Online TPP Program

#Question id: 21118

#Unit 12. Applied Biology

What are the advantages of biosensors in agriculture?
 Easy to handle
 Measures non-polar molecules
 Gives accurate readings
Longer storage
Which of the following options are incorrect?

TLS Online TPP Program

#Question id: 24163

#Unit 1. Molecules and their Interaction Relevant to Biology

Today’s postal service is more efficient than ever. Mail that once took months to move by horse and foot now moves around the country in days or hours by truck, train, and plane. If your letter or package is urgent, the U.S. Postal Service offers Priority Mail and Express Mail services. Priority Mail is guaranteed to go anywhere in the United States in two days or less. Express Mail will get your package there overnight.

This paragraph best supports the statement that