Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 8773
TLS Online TPP Program

#Question id: 11991

The success with which plants extend their range northward following glacial retreat is best determined by

#Unit 10. Ecological Principles
  1. Whether there is simultaneous migration of herbivores.
  2. Their tolerance to shade.
  3. Their seed dispersal rate. 
  4. Their size.
More Questions
TLS Online TPP Program

#Question id: 16319

#Unit 7. System Physiology – Animal

What is distress?
TLS Online TPP Program

#Question id: 30115

#Unit 1. Molecules and their Interaction Relevant to Biology

The antibacterial trimethoprim is an inhibitor of 
TLS Online TPP Program

#Question id: 5429

#Unit 8. Inheritance Biology

Assume that three loci, each with two alleles (A and a, B and b, C and c), determine the differences in height between two homozygous strains of a plant. These genes are additive and equal in their effects on plant height. One strain (aabbcc) is 10 cm in height. The other strain (AABBCC) is 22 cm in height. The two strains are crossed, and the resulting F1 are interbred to produce 1000 F2 progeny. what is number of F2 progeny having intermediate height?
TLS Online TPP Program

#Question id: 24220

#Unit 1. Molecules and their Interaction Relevant to Biology

Glucagon stimulates cAMP from ATP. Cyclic AMP then activates cAMP-dependent protein kinase, phosphorylates PFK-2/FBPase-2. Phosphorylation of this protein enhances its FBPase-2 activity and inhibits its PFK-2 activity resulting
TLS Online TPP Program

#Question id: 11698

#Unit 7. System Physiology – Animal

A patient has an elevated plasma thyroxine (T4) concentration, a low plasma thyroid-stimulating hormone (TSH) concentration, and a thyroid gland that is smaller than normal. Which of the following is the most likely explanation for these findings?