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TLS Online TPP Program

#Question id: 12792

Many  homeowners mow  their  lawns  during the  summer and  collect  the  clippings,  which  are  then  hauled to  the local landfill. Which of the following actions would most benefit the local ecosystem?

#Unit 10. Ecological Principles
  1. Allow sheep to graze the lawn and then collect the sheep's feces to be delivered to the landfill. 
  2. Collect the lawn clippings and burn them.
  3. Either  collect  the  clippings  and  add  them to  a  compost pile,  or  don't  collect  the  clippings  and  let  them decompose into the lawn.
  4. Collect the clippings and wash them into the nearest storm sewer that feeds into the local lake.
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TLS Online TPP Program

#Question id: 19200

#Unit 12. Applied Biology

What kind of biosensors uses ion-selective electrodes to convert the biological reaction into electronic signal?
TLS Online TPP Program

#Question id: 14147

#Unit 3. Fundamental Processes

Activators that stimulate this kind of promoter work by triggering a conformational change in either RNA polymerase or DNA; that is, they interact with the stable closed complex and induce a conformational change that causes transition to the open complex, this is an example of
TLS Online TPP Program

#Question id: 31116

#Unit 2. Cellular Organization

Lipid transverse asymmetry can be seen in the typical animal cell, where the acidic and amine containing phospholipids are enriched in the: 
TLS Online TPP Program

#Question id: 4742

#Unit 8. Inheritance Biology

In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?
TLS Online TPP Program

#Question id: 13207

#Unit 6. System Physiology – Plant

The polymer-trapping model explains symplastic loading in plants with intermediary-type companion cells, this model makes three prediction; which one of the following prediction is INCORRECT?