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Carbon atoms are the most versatile building blocks of the molecules used by living organisms because _____.
Each carbon atom can form up to four covalent bonds with a wide variety of bond angles
In a hydrolysis reaction, _____. In this process, water is _____.
A polymer breaks up to form monomers ... consumed
choose the pair of terms that completes this sentence: Hydroxyl group is to ____ as ____ is to amino group.
alcohol ... amino
Ethanol, propanol, and methanol are three simple alcohols. They can be grouped together because they _____. (
all share the same functional group: a hydroxyl
. The four main categories of macromolecules in a cell are _____.
a. proteins, DNA, RNA, and steroids
b. monosaccharides, lipids, polysaccharides, and proteins
c. proteins, nucleic acids, carbohydrates, and lipids
d. nucleic acids, carbohydrates, monosaccharides, and proteins
e. RNA, DNA, proteins, and carbohydrates.
Generally, animals cannot digest the linkages between the glucose molecules in cellulose. How then do cattle get enough nutrients from eating grass?
Microorganisms in their digestive tracts hydrolyze the cellulose to glucose.
Which one of the following components of a tossed salad will pass through the human digestive tract with the least digestion?
cellulose (in the lettuce)
Nutritionally, saturated triglycerides are considered less healthful than unsaturated. What is one major difference between them?
Saturated triglycerides have more hydrogens than unsaturated triglycerides.
Hydrogenated vegetable oils are more like animal fats than are other plant oils. Because they _____ than other plant oils, they can contribute to cardiovascular disease.
contain fewer double bonds
Some athletes use anabolic steroids to build their body mass. Why is this considered a problematic practice? )
All of the choices are correct.
Which of the following would probably not be affected when a protein is denatured?
Enzyme molecules require a specific shape to perform their catalytic function. Which of the following might alter the protein shape?
all of the above
38. The alpha helix and pleated sheet represent which level of protein structure?
How does a protein's quaternary structure differ from other levels of protein structure?
It involves two or more polypeptide chains.
Based on the way nitrogen bases pair, you would expect the percentage of _____ to be equal to the percentage of _____.
a. A ... T
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