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TLS Online TPP Program

#Id: 7254

Properties of thymus-dependent and thymus-independent antigens


#Unit 5. Developmental Biology #Major histocompatibility complex #Part B Pointers
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TLS Online TPP Program

#Id: 535

#Unit 2. Cellular Organization

We use the principle of parsimony in comparing the organization of orthologous genes by assuming that a common feature predates the evolutionary separation of the two species.
TLS Online TPP Program

#Id: 536

#Unit 2. Cellular Organization

Surface area/volume ratio of bacteria is high compared to the same ratio for larger organisms of similar shape.
TLS Online TPP Program

#Id: 537

#Unit 2. Cellular Organization

The shape of a bacterium is governed by its rigid cell wall.
TLS Online TPP Program

#Id: 538

#Unit 2. Cellular Organization

Some bacterial species are pleomorphic. Example: genera Arthrobacter, Corynebacterium, Mycobacterium, Mycoplasma, etc.
TLS Online TPP Program

#Id: 539

#Unit 2. Cellular Organization

Helical bacteria with: 
1. Less than one turn- vibrioid shape
2. Complete turn- helical shape
TLS Online TPP Program

#Id: 540

#Unit 2. Cellular Organization

Protein filaments in cytoplasm are responsible for the rod and helical cell shapes of bacteria.