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TLS Online TPP Program

#Question id: 2063

In what way do the membranes of a eukaryotic cell vary?

#Unit 2. Cellular Organization

  1. Phospholipids are found only in certain membranes.

  2. Certain proteins are unique to each membrane.

  3. Only certain membranes of the cell are selectively permeable.

  4. Some membranes have hydrophobic surfaces exposed to the cytoplasm while others have hydrophilic surfaces facing the cytoplasm.
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TLS Online TPP Program

#Question id: 10365

#Unit 6. System Physiology – Plant

Why the nitrogenase enzymes catalyzes the nitrogen fixation reaction only in microanaerobic or anaerobic conditions?
TLS Online TPP Program

#Question id: 12516

#Unit 6. System Physiology – Plant

ABA Is Synthesized from a Carotenoid Intermediate is takes place in___
TLS Online TPP Program

#Question id: 11147

#Unit 7. System Physiology – Animal

The concentrations of ions are very different inside and outside a nerve cell due to ________.
TLS Online TPP Program

#Question id: 3518

#Unit 8. Inheritance Biology

Assume that the trihybrid cross AA BB rr X aa bb RR is made in a plant species in which A and B are dominant but there is incomplete dominance between R and r. Consider the F2 progeny from this cross, and assume independent assortment. The phenotypes appear in this F2 progeny?
TLS Online TPP Program

#Question id: 11009

#Unit 7. System Physiology – Animal

What is the normal total delay of the cardiac impulse in the A-V node plus bundle?