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Physiology Ch 4 Quiz
Terms in this set (48)
RNA and DNA have the same pyrimidine bases but different purine bases.
Which of the following is polymer of glucose that is sometimes referred to as animal starch?
The carbon-containing molecules formed by living things are often called
Is the form of energy that cells generally use.
Any large molecule made up of many identical small molecules is called a(n)
Chaperone proteins assist in the proper folding of other proteins so they can have the correct functional shape
Proteins are polymers of
A very large molecule composed of subunits of sugar, a nitrogen base, and a phosphate bond is a
Which of these is not a lipid?
The lipid that is often referred to as a tissue hormone is
In base pairing of DNA molecules, _____ is bound to _____.
The most important monosaccharide is
What determines how a protein performs?
Which term means "water loving" and applies to the phospholipid head?
DNA and RNA are important because
When two amino acids are joined, a peptide bond is formed and an H+ ion is released.
All proteins have which four elements?
Carbon, oxygen, hydrogen, nitrogen
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?
A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid.
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons.
Free radical group
Prostaglandins and steroids share which of the following characteristics?
Both have a ring structure in their molecule
Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called:
Essential amino acids
When two molecules of glucose are joined, they form which disaccharide?
The formation of sucrose involves the removal of a molecule of water. This is called:
The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are:
Which of the following is not true of both triglycerides and phospholipids?
a. They both contain glycerol.
b. They both contain fatty acids.
c. They both contain a hydrophobic and hydrophilic end.
d. All of the above are true of both triglycerides and phospholipids.
They both contain a hydrophobic and hydrophilic end.
Which of the following is not true of carbohydrates?
a. They include substances commonly called sugars.
b. They are the body's primary source of energy.
c. They are a part of both DNA and RNA.
d. All of the above are true of carbohydrates.
All of the above are true of carbohydrates.
Amino acids frequently become joined by:
a. contain all the hydrogen atoms they can hold.
b. contain only single bonds between carbon atoms.
c. are usually solids at room temperature.
d. will kink or bend because of the double bonds between the carbon atoms.
will kink or bend because of the double bonds between the carbon atoms.
Peptide bonds join together molecules of:
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
The amino group in an amino acid is:
Which of the following is not true of RNA?
a. It contains ribose sugar.
b. It contains adenine.
c. It is composed of smaller molecules called nucleotides.
d. 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?
a. is a single strand of nucleotides.
b. contains the sugar ribose.
c. is a double-helix strand of nucleotides.
d. transports amino acids during protein synthesis.
is a double-helix strand of nucleotides.
If one side of a DNA molecule is CTAGGCTG, the other side would be:
Which of the following is not one of the major groups of organic substances in the human body?
Which lipid is part of vitamin D?
The element that is present in all proteins but not in carbohydrates is:
A structural lipid found in the cell membrane is a:
The basic building blocks of fats are:
Fatty acids & glycerol
What is the most important factor in determining the physical and chemical properties of fatty acids?
Group of answer choices
Degree of saturation
Which energy-releasing or energy-transferring molecule does not contain a nucleotide?
The type of lipoprotein associated with "bad" cholesterol and the production of atherosclerotic changes in blood vessels is:
The roles played by proteins can be divided into which categories?
Structural and functional
All of the following substances are organic except:
Which level of protein structure refers to the number, kind, and sequence of amino acids?
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