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SCI221-05

Week 2

QuestionAnswer
All of the following substances are organic except: Lipids. Electrolytes. Carbohydrates. Proteins. Electrolytes.
The roles played by proteins can be divided into which categories? Structural and functional Chemical and functional Structural and chemical Dehydration synthesis and hydrolysis Structural and functional
The basic building blocks of fats are: Monosaccharides. Disaccharides. Amino acids. Fatty acids and glycerol. Fatty acids and glycerol.
The type of lipoprotein associated with “bad” cholesterol and the production of atherosclerotic changes in blood vessels is: HDL. LDL. VHDL. none of the above. LDL.
When two molecules of glucose are joined, they form which disaccharide? Sucrose Maltose Lactose Fructose Maltose
Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called: Enzymes Essential amino acids. Structural proteins. Peptide bonds. Essential amino acids.
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? FAD Creatine phosphate NAD ATP Creatine phosphate
The term glycoprotein, a combination of two words, tells you that the compound is made of _____, with _____ being the dominant component. A lipid and a protein; the lipid Carbohydrate and protein; carbohydrate A lipid and a protein; the protein C Carbohydrate and protein; protein
Which of the following is not true of carbohydrates? They include substances commonly called sugars. They are the body’s primary source of energy. They are a part of both DNA and RNA. All of the above are true of carbohydrates. All of the above are true of carbohydrates.
Which of the following is not true of both triglycerides and phospholipids? They both contain glycerol. They both contain fatty acids. They both contain a hydrophobic and hydrophilic end. All of the above are true of both triglycerides and phosph They both contain a hydrophobic and hydrophilic end.
The element that is present in all proteins but not in carbohydrates is: carbon. hydrogen. oxygen. nitrogen. nitrogen.
Amino acids frequently become joined by: peptide bonds. catabolic reactions. atrophic reactions. all of the above. peptide bonds.
Which lipid is part of vitamin D? Glycerol Steroids Prostaglandins Fatty acids Steroids
Which lipid acts as a “tissue hormone”? Triglyceride Prostaglandin Steroid Phospholipid Prostaglandin
What is the most important factor in determining the physical and chemical properties of fatty acids? Degree of saturation Presence of glycerol Available bonds of hydrocarbons Polarity Degree of saturation
Which of the following is not true of RNA? It contains ribose sugar. It contains adenine. It is composed of smaller molecules called nucleotides. All of the above are true of RNA. All of the above are true of RNA.
The alpha helix is an example of which level of protein structure? Primary Secondary Tertiary Quaternary Secondary
Which level of protein structure refers to the number, kind, and sequence of amino acids? Primary Secondary Tertiary Quaternary Primary
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. hydroxyl phosphate mine group free radical free radical
The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are: triglycerides. phosphoglycerides. steroids. prostaglandins. steroids.
Created by: mecy1980
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