Test
Chapter 2: Molecular Interactions
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Preguntas del test (15)
1The smallest functional unit of an element is a(n) __________.
- Aproton
- Batom
- Celectron
- Dneutron
2Which of the following statements about antioxidants is FALSE?
- AAntioxidants give up electrons.
- BExamples of antioxidants include vitamins C and E.
- CAntioxidants occur naturally.
- DAntioxidants become free radicals.
3Ions of a particular element differ in the number of ________.
- Aelectrons in the outer shell
- Belectrons in the nucleus
- Cneutrons in the nucleus
- Dprotons in the nucleus
4A mole ________.
- Ais always the same mass of any substance
- Bis 6.02 x 10^23 atoms, ions, or molecules of a substance, weighs the same as the gram molecular weight of a particular substance, and is used to express the concentration of a solution.
- Cweighs the same as the gram molecular weight of a particular substance
- Dis 6.02 x 10^23 atoms, ions, or molecules of a substance.
5A cation and an anion unite to form a(n) __________ bond.
- Acovalent
- Bneutral
- Cionic
- Dhydrogen
6Which of these is a polysaccharide?
- Aribose
- Bcellulose
- Cglucose
- Dsucrose
7Which of the following statements about lipids is FALSE?
- ATriglycerides comprise more than 90% of the lipids in our bodies.
- BEicosanoids come from plants and contain 20 carbon atoms.
- CSteroids may be manufactured from cholesterol in the body.
- DA polyunsaturated oil contains many double bonds between adjacent carbon atoms of its fatty acids.
8Each amino acid differs from others in the ________.
- Anumber of carboxyl groups
- Bnumber of central carbon atoms
- Csize of the amino group
- Dcharacteristics of the R group
9Polymers of ____________ store and transmit genetic information at the molecular level.
- Acarbohydrates
- Bnucleotides
- Cproteins
- Dlipids
10Because only complementary bases pair with each other, a nucleotide containing the base thymine would only pair with a nucleotide containing the base __________.
- Acytosine
- Bguanine
- Cthymine
- Dadenine
11When two atoms of the same element are bound together by a covalent bond they form a ________.
- Aan elemental particle
- Ba compound
- Ctwo ions
- Da molecule
12Which of the following are NOT intermolecular bonds?
- ACovalent bonds
- BHydrogen bonds
- CIonic bonds
- DVan der Waals forces
13A molecule whose chemical formula is C5H10O5 is most likely to be a __________.
- Aeicosanoid
- Bcarbohydrate
- Cprotein
- Dlipid
14A scientist who discovered an atom identical to a typical hydrogen atom in all respects except that it has 20 neutrons has found ________.
- Aa hydrogen isotope
- Ba hydrogen ion
- Ca calcium ion
- Da calcium isotope
15Polar molecules are examples of ________.
- Aan electrically charged substance
- Ban ionic bond
- Cunevenly shared electrons in a covalent bond (e.g., between water molecules).
- Dions
Información
- Descripción
- . (Exam 1: Basic Cell Function) Fundamentals of Physiology I Test sobre Chapter 2: Molecular Interactions, creado por May Tiller el 23/08/2016.
- Autor
- May Tiller
- Idioma
- English
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