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TLS Online TPP Program

#Question id: 12755

Which of the following statements best describes why biologists are currently concerned with global warming and the thawing of permafrost in many areas of the tundra biome?

#Part-B Specialized Branches in Biotechnology
  1. The thawing process will likely decrease the abundance and diversity of soil-dwelling organisms in tundra habitats.
  2. The bacterial decomposition of  the thawed organic materials on  the widespread areas of  the tundra will produce large quantities of CO2, which will add to greenhouse gases and exacerbate global warming.
  3. Oil and coal deposits will thaw and rise to the surface (because of their lower density) of the tundra, destroying millions of acres of arctic habitat.
  4. Populations of humans inhabiting the arctic will have to move to more southern latitudes, resulting in in- creased competition for resources in already densely populated areas.
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TLS Online TPP Program

#Question id: 11224

#Part-B Specialized Branches in Biotechnology

How could you increase the magnitude of excitatory postsynaptic potentials (EPSPs) generated at a synapse?
TLS Online TPP Program

#Question id: 11225

#Part-B Specialized Branches in Biotechnology

What happens if twice as many inhibitory postsynaptic potentials (IPSPs) as excitatory postsynaptic potentials (EPSPs) arrive in close proximity at a postsynaptic neuron?
TLS Online TPP Program

#Question id: 11226

#Part-B Specialized Branches in Biotechnology

At the neuromuscular junction, the neurotransmitter acetylcholine (ACh) is degraded by acetylcholinesterase. If a neurophysiologist applies the naturally occurring acetylcholinesterase inhibitor, onchidal (produced by the mollusc Onchidella binneyi), to a synapse, what would you expect to happen?
TLS Online TPP Program

#Question id: 11265

#Part-B Specialized Branches in Biotechnology

Approximately how many kg of carnivore production can be supported by a field plot containing 2000 kg of plant material?
TLS Online TPP Program

#Question id: 11266

#Part-B Specialized Branches in Biotechnology

Which of the following options lists ecosystems in increasing order of consumption efficiency of herbivore?
TLS Online TPP Program

#Question id: 11267

#Part-B Specialized Branches in Biotechnology

Two boottle containing phyoplankton in growing stage with oxygen level  20 mg/ml, in which one bottle placed in dark but another bottle placed in light , allowed to measurment of oxygen level is  15 mg/ml in dark bottle, 30 mg/ml in light bottle. Which of the following measure GPP is