Practice Questions

TLS Online TPP Program

#Question id: 11131

Which statement concerning the generation of an action potential is correct?

#Unit 7. System Physiology – Animal

When the membrane potential in the soma/axon hillock dips below “threshold,” an action potential is initiated
The action potential is initiated in synaptic boutons
The least number of voltage-gated sodium channels in an axon is found near the node of Ranvier
Once an action potential is initiated, it will always run its course to completion

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TLS Online TPP Program

#Question id: 14084

#Unit 1. Molecules and their Interaction Relevant to Biology

In DNA helix the angle at which the two sugars protrude from the base pairs (i.e., the angle between the glycosidic bonds) are

Choose the correct option?

TLS Online TPP Program

#Question id: 14957

#Unit 6. System Physiology – Plant

the xylan backbone may be synthesized by a distinctly different group of synthases, including synthases named;

TLS Online TPP Program

#Question id: 1965

#Unit 4. Cell Communication and Cell Signaling

In some insects, such as Drosophila, fungal cell wall elements can activate the protein Toll. What is Tollʹs function?

TLS Online TPP Program

#Question id: 5239

#Unit 8. Inheritance Biology

Which of the following statements is not true for Hfr strains of E. coli ?

TLS Online TPP Program

#Question id: 28619

#Unit 2. Cellular Organization

APC/C works with substrate-targeting factors which is called__