Biochemistryacademic

The Diels-Alder reaction is a concerted reaction; this means: (a) all bond making and bond breaking occurs simultaneously. (b) the reaction follows Markovnikov's rule. (c) the reaction is highly endothermic. (d) the products contain rings. (e) a mixture of endo and exo products are formed.

"Which of the following best describes a disaccharide? It is two monosaccharides joined together. It is a group of monosaccharide pairs. It is two trisaccharides joined together. It is many monosaccharides joined together."

Draw the Lewis structure for the polyatomic formate CHO−2 anion. Be sure to include all resonance structures that satisfy the octet rule.

Determine the molecular geometry about each interior atom and make a sketch for C2H4 (skeletal structure: H2CCH2).

The "backbone" of the DNA molecule is made up of two alternating components. What are these called?

What elements make up carbohydrates, nucleic acids, proteins, and lipids?

"What is the monomer of lipids? Give an example of a polymer of lipids."

which of the following statements about enzymes are true? Choose all that apply a.) an enzyme yields a specific product, whereas a nonbiologival catalyst may produce more than one product, and side reactions may occur. b.) generally, an enzyme is specific for a substrate. for example, thrombin catalyzes the hydrolysis of the peptide bond between Arg and Gly. c.) a substrate must bind to the active site before a reaction occurs. d.) reactions occur at the active site, which usually consists of a crevice on the surface of the enzyme e.) nonbiological catalysts and enzymes tend to have a similar degree of reaction specificity.

What units are used to measure absorbance on a spectrophotometer?

Which molecules make up the sides of the DNA ladder?

10. Which of the following statements best describes cellular respiration? F. Sunlight and carbon dioxide are used to make ATP. G. ATP and oxygen are used to make sugars and starches. H. Carbon-based molecules from food and oxygen are used to make ATP. J. ATP and carbon dioxide are used to make ADP and water.

What is the monomer for lipids and what is its bond?

# Write the following for $C S_{2}$ : 1. Lewis structure 2. Molecular geometry 3. Hybridization 4. Bond angle(s) 5. Polarity

Which phrase best describes translation? A. converts mRNA into a polypeptide B. catalyzes bonds between amino acids C. produces RNA from DNA molecules D. recycles tRNA molecules for reuse

How does substrate-level phosphorylation differ from oxidative phosphorylation?

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Give an example of each type of macromolecule.

Name a structural difference between triglycerides and phospholipids.

The molecular weight of Potassium chloride (KCl) is 74.55 g/mol. How many grams would you need for 650 ml of a 35 mM solution?

Summarize the RNA world hypothesis in five steps.

Draw aspartic acid (aspartate) at pH 1, pH 7, and pH 13. Include hydrogen atoms.