A student takes a quiz consisting of 5 multiple choice questions. Each question has 4 possible answers. If a student is guessing the answer at random and answer to different are independent, then the probability of atleast one correct answer is

TLS Online TPP Program

#Question id: 1227

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a mechanism for down regulation of signaling from G protein-coupled receptors?

a. a change in the Kd of the receptor-hormone complex

b. proteolysis of the Gα subunit                     

c. hydrolysis of cAMP to 5´-AMP

d. dephosphorylation of adenylyl cyclase

TLS Online TPP Program

#Question id: 2049

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is TRUE of immune responses?

TLS Online TPP Program

#Question id: 12725

#Unit 13. Methods in Biology

Match the following

DNA form	Helix Direction	Number of bases per helix turn
1. B	a. Left Handed	i. 10
2.  A	b. Right Handed	ii. 12
3.  C	c. Left Handed	iii. 14
4. Z	d. Right Handed	iv. 9

TLS Online TPP Program

#Question id: 29496

#Unit 6. System Physiology – Plant

The phyB mutants shows 

TLS Online TPP Program

#Question id: 565

#Unit 1. Molecules and their Interaction Relevant to Biology

A transition-state analog: