TLS Online TPP Program

#Question id: 631


Two curves showing the rate versus substrate concentration are shown below for an enzyme-catalyzed reaction. One curve is for the reaction in the presence of substance X. The other curve is for data in the absence of substance X. Examine the curves and tell which statement below is false.

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. X is an activator of the enzyme.

  2. The enzyme exhibits non-Michaelis-Menten kinetics.

  3. X is likely an allosteric modulator.

  4. X is a competitive inhibitor.

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TLS Online TPP Program

#Question id: 19197

#Unit 12. Applied Biology

What are calorimetric biosensors?

TLS Online TPP Program

#Question id: 5368

#Unit 8. Inheritance Biology

Which of the following is correct about genetic disorder in family?

A) Gene for this trait present in both sex

B) Trait is governed by mitochondrial gene

C) Sex limited trait acts like a recessive trait on an autosome

D) Sex influenced trait acts like a dominant trait on an autosome

TLS Online TPP Program

#Question id: 12054

#Unit 7. System Physiology – Animal

A 54-year-old woman eats a healthy meal. Approximately 20 min later the woman feels the urge to defecate. Which of the following reflexes results in the urge to defecate when the stomach is stretched?

TLS Online TPP Program

#Question id: 7764

#Unit 5. Developmental Biology

Cellular senescence may have evolved to protect organisms against cancer. Instead of dividing out of control, the cells die. Cellular senescence appears to be regulated by several tumor suppressor genes, especially p53.what is the most appropriate reason behind this,

1) Transcription factor p53 is thought to suppress tumorigenesis by causing cell arrest and senescence in response to short telomeres, DNA damage, and viral or external signals to divide

2) This factor can stop the cell cycle, cause cellular senescence in rapidly dividing cells, instruct genes to initiate cellular apoptosis, and activate DNA repair enzymes.

3) Induction of apoptosis or cellular senescence by p53 always beneficial.

TLS Online TPP Program

#Question id: 615

#Unit 1. Molecules and their Interaction Relevant to Biology

The following data were obtained in the presence and absence of inhibitor. What type of inhibition is shown?