In 2005, the United States had a population of approximately 295,000,000 people. If the birth rate was 13 births for every 1,000 people, approximately how many births occurred in the United States in 2005?

TLS Online TPP Program

#Question id: 2673

#Unit 2. Cellular Organization

For a repressible operon to be transcribed, which of the following must be true?

TLS Online TPP Program

#Question id: 1957

#Unit 4. Cell Communication and Cell Signaling

What is a graft between different members of the same species termed?

TLS Online TPP Program

#Question id: 24331

#Unit 4. Cell Communication and Cell Signaling

Select the CORRECT combination by matching the junctions with their principal CAMs or adhesion receptors.

Junctions	Principal CAMs or Adhesion receptors
1. Tight junctions	a. Integrins
2. Gap Junctions	b. Occludin
3. 3-D adhesions	c. Connexin
4. Plasmodesmata	d. Undefined

TLS Online TPP Program

#Question id: 24256

#Unit 2. Cellular Organization

The H32.H42 tetramer bound to DNA recruits

TLS Online TPP Program

#Question id: 468

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycolysis is the name given to a metabolic pathway occurring in many different cell types.  It consists of 11 enzymatic steps that convert glucose to lactic acid.  Glycolysis is an example of