Match the following lipid linked proteins (column I) with their function (Column II).

Column I	Column II
A. prenylated proteins	i. These proteins are located in a number of subcellular compartments, including the cytosol, the endoplasmic reticulum, the inner face of the plasma membrane, and the nucleus.
B. fatty acylated proteins	ii. The core structure of these proteins consists of phosphatidylinositol glycosidically linked to a linear tetrasaccharide composed of three mannose residues and one glucosaminyl residue.
C. glycosylphosphatidylinositol-linked proteins	iii. The proteins that have covalently attached lipids that are built from isoprene units

#Question id: 381

#Unit 1. Structure and Function of Biomolecules

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

#Question id: 382

#Unit 1. Structure and Function of Biomolecules

The molar ratio of sodium acetate to acetic acid in a buffer solution with a pH OF 5.76 is 10:1. Assuming the total buffer concentration is 2.2 X 10^-2 mol/L, how many grams of sodium acetate (m.w. 82) and how many grams of acetic acid (m.w. 60) should be used in preparing a litre of the solution?

#Question id: 383

#Unit 1. Structure and Function of Biomolecules

Three buffers are made by combining a 1 M solution of acetic acid with a 1 M solution of sodium acetate in the ratios shown below

 Which of these statements is true of the resulting buffers?

#Question id: 384

#Unit 1. Structure and Function of Biomolecules

A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).

#Question id: 385

#Unit 1. Structure and Function of Biomolecules

In which reaction below does water not participate as a reactant (rather than as a product)?

#Question id: 386

#Unit 1. Structure and Function of Biomolecules

Which of the following properties of water does not contribute to the fitness of the aqueous environment for living organisms?