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Exam 2: Chemical Principles

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Question 21

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Compare a molecule of a nucleotide to ATP. Could a cell simply insert ATP into DNA without altering it? Explain.

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A nucleotide is composed of a nitrogenou...

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Question 22

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Starch, dextran, glycogen, and cellulose are polymers of

A) amino acids.
B) fatty acids.
C) glucose.
D) acids.
E) nucleic acids.

F) C) and D)
G) A) and B)

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Question 23

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If an amino acid contained a hydrocarbon as its side group, in which of the following categories could it be appropriately designated?

Identify the following reaction: HCl + NaHCO₃ -NaCl + H₂CO₃

Which molecule is composed of a chain of amino acids?

Which type of molecule contains - NH₂ groups?

Figure 2.1 -Which compound in Figure 2.1 is an organic acid?

Table 2.1 -Using the information in Table 2.1, calculate the molecular weight of ethanol, C₂H₅OH.

A basic solution is expected to contain more hydrogen ions than hydroxyl ions.

Any compound that contains carbon is only considered to be organic.

If you viewed one single protein using a microscope, you would observe multiple structures.

Individual covalent bonds are stronger than individual ionic bonds.

A scientist claims that when a protein is denatured, it can be expected that its secondary structure will more likely be retained when compared to all other levels of protein structure structures. Do you agree? Explain.

Which of the following is a base?

Which are the primary molecules making up plasma membranes in cells?

Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope ³⁵S. After a 48- hour incubation, the ³⁵S would most likely be found in the S. cerevisiae's

What is the type of bond between the hydrogen of one molecule and the nitrogen of another molecule?

Two glucose molecules are combined to make a maltose molecule. What is the chemical formula for maltose?

Figure 2.3 -What kind of bond is at the arrow in Figure 2.3?

The formation of ADP from ATP can be defined as a hydrolytic reaction.