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.

What kind of effect does CPH4 have on the human body? Is it available in synthetic drugs?

Q12. Proteins are made of amino acids. What elements make up amino acids? Look up the structures of the 20 amino acids in your textbook and list the 5 elements present.

The steps of the DNA ladder are made of what?

Is agarose a carbohydrate, protein, lipid, or nucleic acid?

Is C6 H12 O6 ​ (glucose) a monomer or a polymer?

What are the three components of a nucleotide? What are their relevant pKa values? How do they connect to each other?

The monomer of a Nucleic Acid is a nucleotide. What are the 3 parts of a nucleotide? $$ \begin{array}{r} \text { HO-P-O } \\ \text { OH } \end{array} $$

What type of biological macromolecules are enzymes?

What color changes occur during a positive result of the Benedict's test?

Which of the following is a function of a protein?

What chemicals make up the sides or backbone of the DNA molecule?

Explain the differences between purines and pyrimidines. List the purines and pyrimidines, and explain which ones bond together. Base size Bases Bases bond with: Purines Pyrimidines

A solid yellow line on your side of the center stripe means: A. Do not pass B. Slow down C. Traffic signal ahead D. You are on a multiple lane highway

What type of biological molecule is DNA helicase?

What is the purpose of including tube 3, and what can you conclude from the result?

Lipids are molecules that are composed primarily of what two elements?

From the results in Part B, which carbohydrates are ketoses?

What are the three parts of an ATP molecule?

"Complete the overall reaction catalyzed by the pyruvate dehydrogenase complex. Move the compounds and cofactors to the correct answer blanks. Two terms will not be used. CoA acetyl-CoA NADH NAD^+ ADP ATP pyruvate"