The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed three-chambered hearts (two atria, one ventricle). Birds and mammals, however, are alike in having four-chambered hearts (two atria, two ventricles). The fourchambered hearts of birds and mammals are best described as ________.

TLS Online TPP Program

#Question id: 33354

#Unit 1. Molecules and their Interaction Relevant to Biology

Oxygen binding to iron in heme can shown as

TLS Online TPP Program

#Question id: 23847

#Unit 2. Cellular Organization

Which group of external signals regulated by Smooth muscle cells and non-muscle cells?

TLS Online TPP Program

#Question id: 3271

#Unit 11. Evolution and Behavior

Consider hemophilia A, a clotting disorder caused by an X-linked recessive allele with a frequency (q) of approximately 1 in 10,000. The frequency of the disease among females and among male respectively

TLS Online TPP Program

#Question id: 32227

#Unit 2. Cellular Organization

Which of the following shows correct order of events regarding Endocytic pathway for internalizing low-density lipoprotein?

TLS Online TPP Program

#Question id: 3755

#Unit 3. Fundamental Processes

In E. coli, there is a mutation in a gene called dnaB that alters the helicase that normally acts at the origin of replication. Which of the following events would you expect to occur as a result of this mutation?