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TLS Online TPP Program

#Question id: 381

Consider an acetate buffer, initially at the same pH as its pKa (4.76). When sodium hydroxide (NaOH) is mixed with this buffer, the:

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. pH rises more than if an equal amount of NaOH is added to an acetate buffer initially at pH 6.76

  2. pH rises more than if an equal amount of NaOH is added to unbuffered water at pH 4.76.

  3. ratio of acetic acid to sodium acetate in the buffer falls.

  4. sodium acetate formed precipitates because it is less soluble than acetic acid.

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TLS Online TPP Program

#Question id: 5325

#Unit 8. Inheritance Biology

Cystic fibrosis is caused by a recessive lethal gene and can be detected by an excess concentration of chloride in sweat. A normal man whose sister has cystic fibrosis, his normal wife whose brother has cystic fibrosis. What is chance of cystic fibrosis in their child?
TLS Online TPP Program

#Question id: 23471

#General Aptitude

Which of the following is the example of input device?
TLS Online TPP Program

#Question id: 10511

#Unit 6. System Physiology – Plant

Which type of pumps inhibits digitoxin in the membranes of heart cells, leading to increased myocardial contraction?
TLS Online TPP Program

#Question id: 9597

#Unit 6. System Physiology – Plant

The reaction centre bacteriochlorophyll from purple photosynthetic bacteria was similarly identified as-
TLS Online TPP Program

#Question id: 3030

#Unit 2. Cellular Organization

Which of the following features of prokaryotic biology involves metabolic cooperation among cells?