Practice Questions

TLS Online TPP Program

#Question id: 550

Which of the following statements is false?

#Unit 1. Molecules and their Interaction Relevant to Biology

A reaction may not occur at a detectable rate even though it has a favorable equilibrium.
After a reaction, the enzyme involved becomes available to catalyze the reaction again.
For S -> P, a catalyst shifts the reaction equilibrium to the right.
Lowering the temperature of a reaction will lower the reaction rate.

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TLS Online TPP Program

#Question id: 10447

#Unit 6. System Physiology – Plant

phot2 mediates phototropism in response to

TLS Online TPP Program

#Question id: 24509

#Unit 10. Ecological Principles

Polyphagous parasites, usually complete their life cycle in two or more different host species and they also exhibit sexual reproduction . These types of host are,

TLS Online TPP Program

#Question id: 12103

#Unit 10. Ecological Principles

Which of the following is a good description of an ecological niche?

TLS Online TPP Program

#Question id: 32364

#Unit 2. Cellular Organization

Formin has a binding site for all, except:

TLS Online TPP Program

#Question id: 12483

#Unit 2. Cellular Organization

ATM and ATR are protein kinases that become activated following specific types of DNA damage.

A. ATM becomes activated in response to double‐strand breaks, which are detected by the MRN protein complex.

B. ATR becomes activated by protein‐coated ssDNA that forms when replication forks become stalled or the DNA is being repaired after various types of damage.

C. ATR phosphorylates and activates the checkpoint kinase Chk2, which phosphorylates p53. D. ATM phosphorylates and activates the checkpoint kinase Chk1, which phosphorylates and inactivates the phosphatase Cdc25.

Which of the following combination is incorrect?