Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 31892
TLS Online TPP Program

#Question id: 10406

Which one of the following photoreceptors is under circadian control and regulates the expression of clock-regulated genes?

#Unit 6. System Physiology – Plant
  1. Phytochrome B
  2. PHOT1/ PHOT2
  3. phototropins
  4. UV Resistance locus 8
More Questions
TLS Online TPP Program

#Question id: 16119

#Unit 7. System Physiology – Animal

Following statements are regarding to Shivering, which is the most potent mechanism for increasing heat production in the body. 
A. Cold environmental temperatures activate centers in the posterior hypothalamus during shivering, which then activate the α and γ motoneurons innervating skeletal muscle. 
B. Shivering involves skeletal muscle contracts rhythmically, generating heat and raising body temperature.
C. Shivering involves stimulation of Na+-K+ ATPase and raising body temperature.
D. Shivering involves stimulation of β receptors in brown fat, which increases metabolic rate and heat production.
Which of the following combination is correct?
TLS Online TPP Program

#Question id: 9581

#Unit 6. System Physiology – Plant

These four Photosystem II, Cytochrome b6 f, Photosystem I and ATP synthase integral membrane complexes are vectorially oriented in the thylakoid membrane to function as follows, find out the incorrect statements;
TLS Online TPP Program

#Question id: 5027

#Unit 11. Evolution and Behavior

Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?

1. Protostomes invade terrestrial environments.

2. Cambrian explosion occurs.

3. Deuterostomes invade terrestrial environments.

4. Vertebrates become top predators in the seas.
TLS Online TPP Program

#Question id: 20409

#Unit 3. Fundamental Processes

Introns may more freely accumulate point substitutions and other changes due to 
TLS Online TPP Program

#Question id: 715

#Unit 1. Molecules and their Interaction Relevant to Biology

A protein is made up of 200 amino acids with alpha helix region containing 100 amino acid residues and 80 amino acids making antiparallel beta sheet and rest 20 amino acids in extended form. What will be the total length of this protein?