Bio 110 Final: Chapter 3

Beschreibung

Quiz am Bio 110 Final: Chapter 3, erstellt von Christina Marshall am 12/12/2017.
Christina Marshall
Quiz von Christina Marshall, aktualisiert more than 1 year ago
Christina Marshall
Erstellt von Christina Marshall vor fast 7 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Molecules that are found in living cells and contain the element ___________ are considered organic molecules.
Antworten
  • hydrogen
  • carbon
  • oxygen
  • nitrogen
  • calcium

Frage 2

Frage
The versatility of carbon to serve as the backbone for a variety of different molecules is due to
Antworten
  • the ability of carbon atoms to form four covalent bonds
  • the fact that carbon usually forms ionic bonds with many different atoms
  • the abundance of carbon in the environment
  • the ability of carbon to form covalent bonds with many different types of atoms
  • both a and d

Frage 3

Frage
Which of the following type(s) of bonds are nonpolar?
Antworten
  • C--C
  • C--O
  • C--H
  • both a and b
  • both a and c

Frage 4

Frage
Which of the following molecules are isomers of each other?
Antworten
  • a and b
  • a and c
  • b and c
  • a, b, and c
  • None of them are isomers of each other

Frage 5

Frage
A polysaccharide that is commonly found in animals cells and stores energy is
Antworten
  • glucose
  • sucrose
  • glycogen
  • starch
  • cellulose

Frage 6

Frage
In contrast to other fatty acids, essential fatty acids
Antworten
  • are always saturated fats.
  • cannot be synthesized by the organism and are necessary for survival.
  • can act as building blocks for large, more complex macromolecules.
  • are the simplest form of lipids found in plant cells.
  • are structural components of plasma membranes

Frage 7

Frage
The structures of three molecules are shown below. Which of them is (are) amphipathic?
Antworten
  • a only
  • b only
  • c only
  • b and c
  • a and c

Frage 8

Frage
The monomers of proteins are ___________, and these are linked by polar covalent bonds commonly referred to as ______________.
Antworten
  • nucleotides, peptide bonds
  • amino acids, ester bonds
  • hydroxyl groups, ester bonds
  • amino acids, peptide bonds
  • monosaccharides, glycosidic linkages

Frage 9

Frage
A _______________ is a portion of protein with a particular structure and function.
Antworten
  • peptide bond
  • domain
  • phospholipid
  • wax
  • monosaccharide

Frage 10

Frage
A DNA molecule contains 30% G. What percentage of its bases are A?
Antworten
  • 30%
  • 20%
  • 15%
  • 10%
  • none of the above
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