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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: 27410

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following drug mimics Sphingosine-1- phosphate (S1P)
TLS Online TPP Program

#Question id: 29032

#Unit 11. Evolution and Behavior

when selection favours the expression of a trait to be different in males and females such as an increase in the trait’s expression benefits one sex but harms the other this situation is called___
TLS Online TPP Program

#Question id: 201

#Unit 1. Molecules and their Interaction Relevant to Biology

The product(s) of lactate dehydrogenase under anaerobic conditions is (are)
A) pyruvic acid.
B) NAD+.
C) NADH.
TLS Online TPP Program

#Question id: 12186

#Unit 2. Cellular Organization

In 2001, the Nobel Prize in Physiology or Medicine was awarded to three cell cycle scientists. Paul Nurse was recognized for his studies with the fission yeast S. pombe, in particular for the discovery and characterization of the wee1+ gene. What did the characterization of the wee1+ gene tell us about cell cycle control?
TLS Online TPP Program

#Question id: 2383

#Unit 2. Cellular Organization

Some are thin areas where the primary wall is not covered by a secondary wall and are populated with plasmodesmata known as