A. Lampbrush chromosomes are formed during an unusually extended mitosis

B. The lampbrush chromosomes are meiotic bivalents, each consisting of paired homologous chromosomes that have been replicated

C. The lampbrush chromosomes are held together only by chiasmata that indicate points of chromosome crossover.

D. The loops around Lampbrush are surrounded by a matrix of ribonucleoproteins that contain nascent RNA chains.

TLS Online TPP Program

#Question id: 14967

#Unit 2. Cellular Organization

Clinically, the cell wall is important because it contributes to the ability of some species to cause disease and is the site of action of some antibiotics. In addition, the chemical composition of the cell wall is used 

TLS Online TPP Program

#Question id: 14968

#Unit 2. Cellular Organization

What compound provide much of the wall's antigenic specificity and thus make it possible to identify gram-positive bacteria by certain laboratory tests

TLS Online TPP Program

#Question id: 14969

#Unit 2. Cellular Organization

 A new drug is developed that targets and binds to the lipid A portion of LPS from Gram negative bacterial cells. This drug shows a high degree of activity and binding in a test tube setting against purified lipid A. Based on this information,

TLS Online TPP Program

#Question id: 14970

#Unit 2. Cellular Organization

A research lab is trying to produce new antibiotics. They come up with drugs that detach the hydrophilic heads from the phospholipids in plasma membranes. This drug

TLS Online TPP Program

#Question id: 14971

#Unit 2. Cellular Organization

Bacillus and Clostridium are medically relevant groups of bacteria that characteristically stain 

TLS Online TPP Program

#Question id: 14972

#Unit 2. Cellular Organization

Although O side chains are readily recognized by host antibodies, gram negative bacteria may thwart host defenses by