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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:

#XL - S Microbiology

  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: 27285

#XL - U Food Technology

The Maillard reaction is a chemical reaction between
TLS Online TPP Program

#Question id: 13071

#XL - S Microbiology

Modifications of the agglutination reaction involve the use of ________particles, which allow the reaction to be observed more easily in the liquid phase
TLS Online TPP Program

#Question id: 8915

#XL - R Botany

The number of legs an insect has, the number of vertebrae in a vertebral column, or the number of joints in a digit (such as a finger) are all strongly influenced by
TLS Online TPP Program

#Question id: 3455

#XL - T Zoology

A duck egg is removed from its mother’s nest and incubated by a barnyard hen. The duckling hatches out in the presence of the barnyard hen and stays in her nest. After a couple of days, the duckling is presented with a choice between its biological mother and the hen that incubated it. The duckling approaches and follows the hen. This set of observations demonstrates the phenomenon of
TLS Online TPP Program

#Question id: 5241

#XL - T Zoology

Genes a, b, and c are widely spaced in the bacterial genome. Transducing phage from an a+ b+ c+ bacterium were used to infect a culture of a- b- c- cells, and b+ transductants were selected. Which of the following best describes the predicted genotypes of these transductants?