Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 9568
TLS Online TPP Program

#Question id: 12786

How are matter and energy used in ecosystems?

#Unit 10. Ecological Principles
  1. Matter is cycled through ecosystems; energy is not. 
  2. Energy is cycled through ecosystems; matter is not.
  3. Energy can be converted into matter; matter cannot be converted into energy.
  4. Matter can be converted into energy; energy cannot be converted into matter.
More Questions
TLS Online TPP Program

#Question id: 1351

#Unit 4. Cell Communication and Cell Signaling

Focal adhesions are to cultured cells as    ?     are to cells in vivo.
TLS Online TPP Program

#Question id: 7568

#General Aptitude

Two stations P and Q are 110 km apart on a straight track. One train starts from P at 7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25 kmph. At what time will they meet?
TLS Online TPP Program

#Question id: 31169

#Unit 7. System Physiology – Animal

The basis for the relative refractory period is the: 
TLS Online TPP Program

#Question id: 10253

#Unit 6. System Physiology – Plant

Two pathways for the splitting of sucrose are known in plants, both of which take part in the use of sucrose from phloem unloading;
TLS Online TPP Program

#Question id: 13182

#Unit 10. Ecological Principles

The MacArthur-Wilson equilibrium model of island biogeography predicts the number of species found on islands. The figure below depicts two volcanic islands located off a section of mainland coast.

The MacArthur-Wilson model predicts that the relative numbers of bird species on the mainland and two islands would be