Biology Test Preparations On Proteins Part 2

Test Preparation on Biology Test Preparations On Proteins Part 2

1.

A ketogenic amino acid is

1Valine
2Cysteine
3Leucine
4Threonine

2.

Which of the following types of interactions are important in forming secondary structures such as alpha helices and beta sheets in proteins?

1Hydrogen bonds
2Ionic bonds
3Hydrophobic interactions
4Disulfide bridges

3.

Which of the following statements about the hydrolysis of ATP to produce ADP and Pi are true?

1Because its delta-G is negative, this is an endergonic reaction and can happen spontaneously.
2Hydrolysis of ATP can be coupled to another reaction by first donating the phosphate to some other molecule.
3ATP a high-energy molecule: this means that its hydrolysis yields a lot of energy because ATP is so stable.
4Because the hydrolysis of ATP is spontaneous, it permits the cell to carry out other reactions without using enzymes.

4.

The R" group (side chain) of the amino acid glutamate is -CH2-CH2-COOH. What properties would you expect this side chain to have?"

1Hydrophilic
2Hydrophobic
3Acidic
4Basic

5.

Which of the following are true of enzymes?

1They are polymers.
2They are synthesized by hydrolysis.
3They specifically bind only one or a few substrates.
4Their primary structure is encoded in DNA

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