replication fork is initiated at the origin and then moves sequentially along DNA

TLS Online TPP Program

#Id: 1738

#Unit 4. Cell Communication and Cell Signaling

Class II MHC glycoproteins expressed predominantly on pAPCs, where they primarily present exogenous antigenic peptides to CD4+ T cells.

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#Id: 4495

#Unit 13. Methods in Biology

Electrical connections between the patient’s limbs and the electrocardiograph for recording ECGs from the standard bipolar limb leads.

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#Id: 828

#Unit 4. Cell Communication and Cell Signaling

ETI invasion by pathogen causes selection of novel R gene variants that can recognize other pathogen effector molecules and then activate defense.

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#Id: 7366

#Unit 5. Developmental Biology

In the Drosophila egg, karyokinesis occurs without cytokinesis to create a syncytium.

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#Id: 7556

#Unit 6. System Physiology – Plant

Cytokinins are defined as compounds that have biological activities similar to those of trans-zeatin. These activities include the ability to do the following:

Induce cell division in callus cells in the presence of an auxin

Promote bud or root formation from callus cultures when in the appropriate molar ratios to auxin

Delay senescence of leaves

Promote expansion of dicot cotyledons