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Biomolecules

Week 2 Quiz

QuestionAnswer
What is the most important factor in determining the physical and chemical properties of fatty acids? Degree of saturation
DNA is a double-helix strand of nucleotides.
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? Creatine phosphate
The formation of sucrose involves the removal of a molecule of water. This is called: dehydration synthesis
Which of the following is not true of carbohydrates? All of the above are true of carbohydrates.
Which lipid is part of vitamin D? Steroids
Prostaglandins and steroids share which of the following characteristics? Both have a ring structure in their molecule.
The type of lipoprotein associated with “bad” cholesterol and the production of atherosclerotic changes in blood vessels is: LDL
The element that is present in all proteins but not in carbohydrates is: Nitrogen
A structural lipid found in the cell membrane is a: phospholipid, steroid
Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called: essential amino acids
Peptide bonds join together molecules of: amino acids
Which level of protein structure refers to the number, kind, and sequence of amino acids? Primary
Which lipid acts as a “tissue hormone”? prostaglandin
Sometimes referred to as animal starch, _____ is the main polysaccharide in the body. Glycogen
The term glycoprotein, a combination of two words, tells you that the compound is made of _____, with _____ being the dominant component. carbohydrate and protein; protein
Which of the following is not true of RNA? All of the above are true of RNA
The alpha helix is an example of which level of protein structure? Secondary
Unsaturated fats: will kink or bend because of the double bonds between the carbon atoms.
The amino group in an amino acid is: NH3+
All of the following substances are organic except: electrolytes
If one side of a DNA molecule is CTAGGCTG, the other side would be: GATCCGAC
The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are: steroids
Which of the following is not one of the major groups of organic substances in the human body? salts
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. free radical
The basic building blocks of fats are: fatty acids and glycerol.
Which of the following is not true of both triglycerides and phospholipids? They both contain a hydrophobic and hydrophilic end.
The roles played by proteins can be divided into which categories? structural and functional
Created by: Alina_Perrenod
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