In cardiac muscle, the action potential is caused by opening of three types of channels: 

Voltage activated fast sodium channels 

L-type calcium channels (slow calcium channels or calcium-sodium channels)

Voltage activated potassium ion channels

TLS Online TPP Program

#Id: 8944

#Unit 2. Cellular Organization

If chromosome segregation occurs properly, extension of the spindle microtubules inserts the daughter SPB into the bud, causing Tem1 to be activated by an unknown mechanism.

TLS Online TPP Program

#Id: 7677

#Unit 1. Molecules and their Interaction Relevant to Biology

Clockwise rotation gives dihedral angles from 0º to 180º.

180º is the same as counter-clockwise rotation to -180º.

TLS Online TPP Program

#Id: 6737

#Unit 8. Inheritance Biology

Conjugation

Direct transfer of genetic material from one bacterium to another.

Two bacteria lie close together and a connection forms between them. 

After conjugation, crossing overtakes place between homologous sequences

In conjugation, DNA is transferred only from donor to recipient, with no reciprocal exchange of genetic material. 

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#Id: 8851

#Unit 2. Cellular Organization

Geminin is expressed in late G1; it binds to and inhibits Cdt1 preventing reloading of the MCM helicase.

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#Id: 7344

#Unit 11. Evolution and Behavior

Inbreeding coefficient (F)

Probability that an individual has two identical alleles for a given gene. Inbreeding coefficients can range from 0 to 1.