Practice Questions

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#Question id: 547

The role of an enzyme in an enzyme-catalyzed reaction is to:

#1. Molecules and their Interaction Relevant to Biology

bind a transition state intermediate, such that it cannot be converted back to substrate.
ensure that all of the substrate is converted to product.
ensure that the product is more stable than the substrate.
increase the rate at which substrate is converted into product.

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#Question id: 15781

#5. Developmental Biology

Chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell states and progenitor differentiation through endocrine, paracrine, or juxtacrine mechanisms. These signaling factors:

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#Question id: 15782

#5. Developmental Biology

Adult cells may be reprogrammed to gain pluripotency by modifying the genes namely

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#Question id: 15783

#5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of Klf-4?

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#Question id: 15784

#5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of C-myc?

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#Question id: 15785

#5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of Sox2 and Oct4?

A. Established pluripotency and blocked differentiation.

B. Opened up chromatin

C. Activation of Nanog.

D. Promotes cell growth and proliferation

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#Question id: 15857

#12. Applied Biology

The ability of a plant cell to perform all the functions of development is called__