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Kenisha Smith

Physiology Quiz 2

QuestionAnswer
Proteins are polymers of amino acids.
Any large molecule made up of many identical small molecules is called a(n) polymer
The lipid that is often referred to as a tissue hormone is prostaglandin
The carbon-containing molecules formed by living things are often called organic molecules.
Which term means “water loving” and applies to the phospholipid head? hydrophilic
DNA and RNA are important because information molecules.
ATP is the form of energy that cells generally use.
Which of these is not a lipid? polysaccharide
A very large molecule composed of subunits of sugar, a nitrogen base, and a phosphate bond is a nucleic acid.
RNA and DNA have the same pyrimidine bases but different purine bases. False
In base pairing of DNA molecules, _____ is bound to _____. adenine; thymine
A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid. False
A saturated fatty acid is one in which all available bonds of its hydrocarbon chain are filled.
What term is often used to describe certain arrangements of atoms attached to the carbon core of many organic molecules? functional group
The most important monosaccharide is glucose
Chaperone proteins assist in the proper folding of other proteins so they can have the correct functional shape. True
All proteins have which four elements? carbon, oxygen, hydrogen, and nitrogen
What determines how a protein performs? shape
When two amino acids are joined, a peptide bond is formed and an H+ ion is released. False
Which of the following is polymer of glucose that is sometimes referred to as animal starch? Glycogen
The formation of sucrose involves the removal of a molecule of water. This is called: dehydration synthesis.
Unsaturated fats: will kink or bend because of the double bonds between the carbon atoms.
Which lipid acts as a “tissue hormone”? Prostaglandin
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, and steroid.
When two molecules of glucose are joined, they form which disaccharide? Maltose
The basic building blocks of fats are: fatty acids and glycerol.
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
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 lipid is part of vitamin D? Steroids
What is the most important factor in determining the physical and chemical properties of fatty acids? Degree of saturation
Which level of protein structure refers to the number, kind, and sequence of amino acids? Primary
If one side of a DNA molecule is CTAGGCTG, the other side would be: GATCCGAC.
Peptide bonds join together molecules of: amino acids.
All of the following substances are organic except: electrolytes
The type of lipoprotein associated with “bad” cholesterol and the production of atherosclerotic changes in blood vessels is: LDL
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. free radical
Which of the following is not true of RNA? It contains ribose sugar. It contains adenine. It is composed of smaller molecules called nucleotides.
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? Creatine phosphate
Created by: Kenisha.smith
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