TLS Online TPP Program

#Question id: 6951


In chick development, the cell movement during gastrulation is called:

#Unit 5. Developmental Biology
  1. invagination
  2. involution
  3. ingression
  4. epiboly
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TLS Online TPP Program

#Question id: 398

#Unit 1. Molecules and their Interaction Relevant to Biology

One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that, when placed in an aqueous solution, dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). (See figure.)

If the pH of blood drops, one would expect ________.

TLS Online TPP Program

#Question id: 399

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the pH of a 1 L solution containing 0.100 M formic acid and 0.100 M sodium formate before and after the addition of 1.00 mL of 5.00 M NaOH. How much would the pH change if the NaOH were added to 1.00 L of pure water? (pKa for formic acid is 3.75)

TLS Online TPP Program

#Question id: 400

#Unit 1. Molecules and their Interaction Relevant to Biology

Consider two solutions: solution X has a pH of 4; solution Y has a pH of 7. From this information, we can reasonably conclude that ________.

TLS Online TPP Program

#Question id: 401

#Unit 1. Molecules and their Interaction Relevant to Biology

.Which of the following graphs describes the relationship between [H3O+] and pH?

TLS Online TPP Program

#Question id: 31352

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following graph shows correct relationship

TLS Online TPP Program

#Question id: 31365

#Unit 1. Molecules and their Interaction Relevant to Biology

To purify ‘A’ from a mixture of these four proteins in a single step, using ion-exchange chromatography, what combination of buffer pH and ion-exchange resin would you select?