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TLS Online TPP Program

#Question id: 12533

If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starts from seaweeds to fish to seals to polar bears, then which of the following could be true?

#Unit 10. Ecological Principles
  1. Polar bears can provide more food for humans than seals can.
  2. The total biomass of the seaweeds is lower than that of the seals.
  3. Seal meat probably contains the highest concentrations of fat-soluble toxins.
  4. The seaweed can potentially provide more food for humans than the seal meat can.
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TLS Online TPP Program

#Question id: 74

#Unit 1. Molecules and their Interaction Relevant to Biology

The enthalpy and entropy of the initial and final states of a reacting system are shown in the table. Calculate the change in free energy for the reaction when the temperature is 4°C.
TLS Online TPP Program

#Question id: 2307

#Unit 2. Cellular Organization

Bacteria that have cell walls with thick layers of peptidoglycan are:
TLS Online TPP Program

#Question id: 2835

#Unit 2. Cellular Organization

An enhancer

a. can be located upstream of a promoter.

b. can be located downstream of a promoter.

c. can be located a variable distance from the promoter.

d. is always located within 1 kb of the promoter.

e. can be cell-type-specific.
TLS Online TPP Program

#Question id: 30065

#Unit 7. System Physiology – Animal

Acetylcholine binds to M2 muscarinic receptors decreases cAMP in the SA nodal cells, The result is:
TLS Online TPP Program

#Question id: 19081

#Unit 4. Cell Communication and Cell Signaling

Oomycetes (fungus‐like organisms), brown algae and mammalian parasites as Plasmodium falciparum and fungi can be__
a) Biotrophic plant pathogens
b) Necrotrophic plant pathogens
c) Hemibiotrophic plant pathogens