Practice Questions

TLS Online TPP Program

#Question id: 453

Which statement does not explain why many biochemical processes are carried out via multi-step pathways rather than by single-step reactions (or only a few steps)

#Unit 1. Molecules and their Interaction Relevant to Biology

Multi-step pathways allow for more control points to regulate biochemical processes.
The end products of most pathways can usually be produced only by the pathway reactions that nature has evolved.
Sharing of intermediates between pathways is facilitated this way.
There is greater control over the amounts of energy that are consumed or released at any one time.

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TLS Online TPP Program

#Question id: 6959

#Unit 5. Developmental Biology

Which of the following is NOT involved in left-right asymmetry of vertebrates?

TLS Online TPP Program

#Question id: 15853

#Unit 5. Developmental Biology

In XY cells, the early promoter is not active and there is no early Sxl protein because-

TLS Online TPP Program

#Question id: 23830

#Unit 2. Cellular Organization

The first myosin isolated from skeletal muscle;

TLS Online TPP Program

#Question id: 3437

#Unit 11. Evolution and Behavior

Learning in which an associated stimulus may be used to elicit the same behavioral response as the original sign stimulus is called

TLS Online TPP Program

#Question id: 1727

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is TRUE of CD4?