Voltage-gated sodium channel has two gates:

activation gate near the outside of the channel 

Inactivation gate near 

the inside of the channel 

TLS Online TPP Program

#Id: 1052

#Unit 5. Developmental Biology

Hox9 and Hox10 paralogues specify the stylopod

TLS Online TPP Program

#Id: 1623

#Unit 4. Cell Communication and Cell Signaling

Defensins (α and β) Disrupt membranes of bacteria, fungi, protozoan.

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#Id: 10280

#Unit 6. System Physiology – Plant

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#Id: 2046

#Unit 8. Inheritance Biology

Autosomal Recessive Trait

a. Usually appears in both sexes with equal frequency.

b. Tends to skip generations.

c. Affected offspring are usually born to unaffected parents.

d. When both parents are heterozygous, approximately one-fourth of the offspring will be affected.

e. Appears more frequently among the children of consanguineous marriages.

TLS Online TPP Program

#Id: 2878

#Unit 13. Methods in Biology

Bacterial cultures do not absorb the incoming light. Instead, the light is scattered and thus, the spectrometer will record an apparent absorbance (sometimes also called attenuance). In this case, the observed parameter is called optical density (OD).