Nonphosphorylated CDK bound to one of its cyclin partners has minimal but detectable protein kinase activity in vitro, although it may be essentially inactive in vivo.

TLS Online TPP Program

#Id: 5197

#Unit 7. System Physiology – Animal

In the presence of PL, Ca2+ , & factor V, activated factor X catalyzes the conversion of prothrombin to thrombin.

TLS Online TPP Program

#Id: 6980

#Unit 8. Inheritance Biology

Polyploidy 

Some organisms possess more than two sets of chromosomes—they are polyploid.  Allopolyploidy Condition in which the sets of chromosomes of a polyploid individual are derived from two or more species.  Autopolyploidy Condition in which all the sets of chromosomes of a polyploid individual are derived from a single species.

TLS Online TPP Program

#Id: 377

#Unit 2. Cellular Organization

For negatively supercoiled circle W < 0 

For a positively coiled superhelix W > 0.

 

TLS Online TPP Program

#Id: 2049

#Unit 8. Inheritance Biology

X-Linked Recessive Trait

a. Usually more males than females are affected.

b. Affected sons are usually born to unaffected mothers; thus, the trait skips generations.

c. Approximately half of a carrier (heterozygous) mother’s sons are affected.

d. Never passed from father to son.

e. All daughters of affected fathers are carriers.

TLS Online TPP Program

#Id: 7965

#Unit 2. Cellular Organization

Unassembled or misfolded proteins in the ER are often transported back to the cytosol, where they are degraded in the ubiquitin-proteasome pathway