Practice Questions

TLS Online TPP Program

#Question id: 1874

Which of the following is the single immunodeficiency disease that most profoundly affects CD4-positive T-cells?

#Unit 4. Cell Communication and Cell Signaling

AIDS
Complete DiGeorge syndrome
Purine nucleoside phosphorylase (PNP) deficiency
Severe protein-calorie malnutrition

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TLS Online TPP Program

#Question id: 12715

#Unit 6. System Physiology – Plant

Early-acting stress sensors provide the initial signal for the stress response, several possible examples of stress-sensing mechanisms that act early in the pathway have been identified. They include:

A) calcium channel (cyclic nucleotide-gated calcium channel) that senses changes in temperature

B) A kinase (SnRK1, a SNF1-related kinase 1) that senses energy depletion during stress

C) A plasma membrane histidine kinase (ATHK1) that senses osmotic stress

D) A leucine rich repeat receptor kinase (LRRK) protein (Srlk)

E) An endoplasmic reticulum transmembrane sensor inositol-requiring enzyme 1 (IRE1)

And activating several response after sensing these mechanisms;

i) activates hundreds of stress-response transcripts

ii) that functions as an upstream regulator of salinity responses in Arabidopsis

iii) that is required for acclimation to heat stress

iv) that is required for heat tolerance in plants

v) activates ABA-dependent and ABA-independent responses

Which of the following is the correct match the activating response with its sense mechanism;

TLS Online TPP Program

#Question id: 32287

#Unit 2. Cellular Organization

Which of the following ER resident protein catalyzes the oxidation of free sulfhydryl (SH) groups on cysteines?

TLS Online TPP Program

#Question id: 11022

#Unit 7. System Physiology – Animal

A 55-year-old man had the following EKG recorded at his doctor’s office during a routine physical examination.

What is his diagnosis?

TLS Online TPP Program

#Question id: 29036

#Unit 11. Evolution and Behavior

Darwin’s hypothesis is that Exaggerated secondary sexual traits are favoured by sexual selection because they increase male mating success but more than higher exaggeration secondary sexual traits that leads to___

TLS Online TPP Program

#Question id: 11293

#Unit 10. Ecological Principles

Measurement of phytoplankton production, take sample of phytoplankton suspended in two bottles in lake. One bottle (D) is dark in colour but second bottle (L) light in colour. After some time productivity measure as follow Where Lo –oxygen concentration in light bottle, Do –oxygen concentration in Dark bottle, Io –oxygen concentration in bottle before incubation

A) Lo- Do B) Lo- Io C) Io- Do