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TLS Online TPP Program

#Question id: 11092

Which statement is the most accurate definition of external respiration?

#Unit 7. System Physiology – Animal
  1. Bulk flow (convection) of air or water to and from the gas-exchange membrane.
  2. The process by which O2 is transported to the gas-exchange membrane from the environmental medium and by which CO2 is transported away from the membrane into the environmental medium.

  3. The process by which CO2 is transported to the gas-exchange membrane from the environmental medium and O2 is transported away from the membrane into the environmental medium.

  4. Diffusion of O2 and CO2 across the gas exchange membrane.
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TLS Online TPP Program

#Question id: 27554

#Unit 1. Molecules and their Interaction Relevant to Biology

Alanine can be easily mutated to

1. Serine 

2. Cysteine 

3. Aspartate 

4. Lysine
TLS Online TPP Program

#Question id: 18601

#Unit 13. Methods in Biology

The chances of killing a bird are 1 in three attempts. Find the probability that no bird is killed in 3 attempts.
TLS Online TPP Program

#Question id: 10908

#Unit 6. System Physiology – Plant

The energy is necessary to move photosynthate from producing cells into the sieve elements. This movement of photosynthate is called
TLS Online TPP Program

#Question id: 18080

#Unit 9. Diversity of Life Forms

The following are all adaptations to life on land except
TLS Online TPP Program

#Question id: 10992

#Unit 7. System Physiology – Animal

When recording lead aVL on an EKG, the positive electrode is the