Roger is comparing a model of a sugar molecule to a model of an amino acid. Which of the following evidence statements would be supported by the two models? A. Sugars and amino acids are made of exactly the same elements. B. Sugars and amino acids have the same structure. C. Sugars and amino acids are made of the same elements but amino acids also contain nitrogen. D. Sugars and amino acids are made of the same elements but sugars also contain phosphorus. E. Sugars and amino acids are both polymers.

Two students are developing a computer simulation of a chemical reaction that forms amino acids. Their simulation uses colored spheres to represent atoms of different elements. It uses lines connecting the spheres to represent chemical bonds. For the simulation to be accurate, which of these features should be included? A. Lines that break and reform between the spheres B. Spheres that break apart into small pieces C. Spheres that disappear during the simulation of the reaction D. Spheres that appear during the simulation of the reaction E. Lines that never break once they are placed

Why is Arg often referred to as a basic amino acid? Which other two amino acids are also basic amino acids?

Nucleic acids are __________ of __________.

What is an amino acid? How many amino acids are found in living organisms?

Catalase, an enzyme normally found in peroxisomes, is present in normal amounts in cells that do not have visible peroxisomes. It is possible to determine the location of catalase in such cells using immunofluorescence microscopy with antibodies specific for catalase. Fluorescence micrographs of normal cells and peroxisome-deficient cells are shown in the figure. Where is catalase located in cells without peroxisomes? Why does catalase show up as small dots of fluorescence in normal cells?

What is biochemistry? What significant advances in biochemistry have helped diabetics?

The Maclaurin series for the arctangent function converges for $-1<x \leq 1$ and is given by $\arctan x=\lim _{n \rightarrow \infty} P_{n}(x)=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}(-1)^{i+1} \frac{x^{2 i-1}}{2 i-1}$ a. Use the fact that $\tan \pi / 4=1$ to determine the number of n terms of the series that need to be summed to ensure that $\left|4 P_{n}(1)-\pi\right|<10^{-3}$ b. The C++ programming language requires the value of $\pi$ to be within $10^{-10}.$ How many terms of the series would we need to sum to obtain this degree of accuracy?

What is heat? How does heat differ from thermal energy? Under what condition is heat transferred from one system to another?

On the blueprint of the apartment, the balcony measures 1 inch wide by 1.75 inches long. If the actual length of the balcony is 7 feet, what is the perimeter of the balcony?

What is biochemistry?

What structural feature does glucose share with larger carbohydrates?

A. a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom

B. the presence of double covalent bonds between carbon atoms

C. strong bonds between carbon atoms that cannot be broken

D. ionic bonds between carbon atoms and oxygen atoms

What is the name for the amount of energy that a reaction needs to get started?

What structural feature does glucose share with larger organic molecules, including DNA and proteins?