multiple choice questions of cells membrane transport and calculation of pH

Question Description

1. Which of the following can be moved across the membrane by transporters?

A. Glucose

B. Ions.

C. Glucose and Ions

D. Glucose water and ions.

2. If E. coli is placed in a solution of sugar, which will be activated first?

A. Histidine kinase

B. Asp

C. Flagellum

D. Asp and the flagellum at the same time

3. Which never involves an input of energy?

A. Primary active transport

B. Secondary active transport

C. Both primary and secondary active transport

D. Passive transport

4. Which compound will form the most hydrogen bonds with water?

A. Glucose

B. Phenylalanine

C. Waxes

D. Fatty acids

5. What is pH of a buffer prepared by mixing equal volumes of 0.5 M H2PO4- and 0.1 M NaOH? The pKa is 6.86. Report your answer to 2 significant figures, and do not use scientific notation.

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