Exam 3: The Chemistry of Life: Organic Compounds

_____________ is a region where a polypeptide chain forms a uniform helical coil.

Which of the following describes the tertiary structure of a protein molecule?

Figure 3-1 ​ The products of the process in the accompanying figure are:

At which level of protein structure are peptide bonds most important?

When two amino acids combine in a condensation reaction, a ____________ is formed.

Methane, which is composed of one carbon and four hydrogens is a gas at room temperature. Upon replacing one of the hydrogen atoms with a hydroxyl group, methane is converted to methanol, which is a liquid at room temperature. Explain the reason behind this difference in physical properties.

When glucose and fructose undergo condensation, maltose is produced as a product.

Which of the following fatty acids include one or more adjacent pairs of carbon atoms joined by a double bond?

An essential amino acid is one that the body cannot synthesize in sufficient amounts.

Cellulose is the main structural component of the walls that surround plant cells.

A beta-pleated sheet is an example of a protein's tertiary structure.

A phosphate group is weakly acidic.

How many covalent bonds are formed by carbon atoms, producing a wide variety of molecular shapes and sizes?

You have discovered a protein that consists of three identical subunits (polypeptide chains). Each subunit has an alpha helix and two different domains that are connected by two cysteine residues. Describe the four levels of organization for this protein and list the type(s) of bond(s) involved in establishing each structural level.

What type of protein accelerates the thousands of different chemical reactions that take place in an organism?

Analysis of a certain polymer shows that it contains phosphate groups, ribose groups, and pyrimidines. Based on this information, what statement best describes this compound?

Most animals convert carotenoids to which vitamin?