The enzyme known as alcohol dehydrogenase is capable of oxidizing ethanol, methanol and other hydroxyl group containing organic compounds into their corresponding aldehydes. Such an enzyme with ___ catalyzes the reaction of structurally related substances. Select one:

a. absolute specificity

b. relative specificity

c. stereospecificity

d. no specificity

suppose you dissolved 2000 U of enzyme in 1 ml of buffer. you take a 20 microlitre of diluted enzyme and add it to 1 ml of substrate solution with a concentration of 0.5mM. how long would it take to covert all of the substrate in the solution? ( assume ideal conditions)

During the mismatch repair of DNA, the repair enzyme

1. will remove several nucleotides on both DNA strands.

2. will remove several nucleotides on one DNA strand.

3. will remove only the mismatched nucleotide.

4. will remove the mismatched nucleotide, and the same enzyme will replace it with the correct nucleotide.

5. is unable to detect mutations.

Your spouse provided the following information information about your family: salaries, $65,000; mortgage payment, $7,396; food, $2,333; interest income, $457; transportation, $1,743; dividend income, $507; automobile payment, $3,626; clothes and personal, $2,759; student loan payment, $1,663; property taxes, $1,794; utilities, $3,376; insurance, $2,118; income taxes $9,333; and recreation and vacation, $2,848. Construct a personal income statement for the family and determine what is the family's disposable income?

Financial Accounting:

1- Describe the Double-Declining Balance (DDB) depreciation method. Explain a real life business example of an actual fixed asset being depreciated using the Double-Declining Balance (DDB) depreciation method. (Review pages 454 to 457 & pages 476 to 478)

2- Describe a bond issued at a premium. Explain why an investor would purchase a bond issued at a premium instead of a bond issued at par or a bond issued at a discount. (Review pages 515 to 520)

Which of the following types of substances are weak electrolytes in aqueous solution at 298 K? CHOOSE ALL CORRECT ANSWERS, there may be more than one correct answer.

weak acids

strong bases

aminium salts

ionic salts

metals

strong acids

weak bases

non-metals

metalloids

A 65.0 mL solution of 0.118 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.118 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively.

a) Calculate the pH at the first equivalence point.

b) Calculate the pH at the second equivalence point.

A protein with a wild-type allele (P^wt) and protein with a mutant allele (P^m) are one amino acid in the position 12 of the protein chain. The mutant allele's sequence is 5'CTT whereras the wild-type allele's sequence is 5'CAT.

Using an amino acid chart, find :

P^wt in position #12

P^m in position #12

A 65.0 mL solution of 0.113 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.113 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. a) Calculate the pH at the first equivalence point b) Calculate the pH at the second equivalence point

Multiple choice: All of the following describe the properties of water except:

A) it is cohesive and therefore, pours easily.

B) it has a high specific heat and so it takes a lot of energy to raise the temperature of water.

C) when water is heated, the heat spreads easily throughout the body of water.

D) it vaporizes at a low temperature, meaning that it only requires a minimal amount of energy to cause a lot of water to evaporate.

Choose the FALSE statement:

A) Carbon, oxygen and nitrogen are common elements in the molecules making up your body because of their ability to form multiple covalent bonds.

B) On the pH scale of 0-14, a pH less than 7 is considered basic and a pH greater than 7 is acidic.

C) If a phospholipid bilayer were placed in a non-polar environment the orientation of the molecules making up this membrane would be the reverse of the water-borne arrangement.

Choose the FALSE statement:

A) Protein molecules are always composed of a single strand or chain of amino acids folded into a random shape.

B) When ATP is hydrolyzed to ADP, the energy released is used to perform work; the products of this hydrolysis will be recycled back to ATP through the digestion of foodstuffs.

C) In the absence of enzymes, the reactions of the cell occur too slowly to support the needs of the cell.