Lecture Exam 1

A  FALSE

B  TRUE

A  an amino acid

B  a fatty acid

C  a nucleotide

D  a monosaccharide

E  a protein

A  C2H4

B  C2H6

C  CH4

D  C2H2

E  C3H8

A  can have a maximum of 2 electrons.

B    

C  is called the 1s orbital and can have a maximum of 8 electrons.

D  is called the 2p orbital and can have a maximum of 2 electrons.

E  is called the 2p orbital.

F  can have a maximum of 8 electrons.

A  Injection of the dye must occur in the inner membrane space of the mitochondria.

B  The dye would go between the plasma membrane and membrane of the organelles.

C  You would have to inject the dye into the membrane of the rough ER.

D  The Golgi apparatus holds the cytosol, and therefore the dye must be injected there.

A  3H has a different electron configuration than 1H.

B  3H has 2 more protons than 1H.

C  3H has 2 more electrons than 1H.

D  3H has 2 more neutrons than 1H.

E  3H has the same number of neutrons as 1H.

A  DNA will have a double-stranded structure and DNA will have thymine instead of uracil in its nitrogenous bases.

B  DNA will have thymine instead of uracil in its nitrogenous bases.

C  DNA will have ribose as the sugar in its backbone and DNA will have uracil instead of thymine in its nitrogenous bases.

D  DNA will have uracil instead of thymine in its nitrogenous bases.

E  DNA will have a double-stranded structure.

F  Adenine will be present in the DNA.

A  dimers.

B  isotopes.

C  monomers.

D  polymers.

E  isomers.

A  possess only hydrophilic properties.

B  possess both hydrophilic and hydrophobic properties.

C  possess neither hydrophilic nor hydrophobic properties.

D  possess only hydrophobic properties.

E  tend not to interact with other molecules.

A  tertiary

B  primary

C  secondary

D  hepternary

E  quaternary

A  a hypothesis

B  a discovery

C  a prediction

D  a theory

E  a fact

A  TRUE

B  FALSE

A  an acidic solution.

B  an alkaline solution.

C  having a H+ concentration of 4.

D  None of these choices are correct.

E  an acidic solution with a H + concentration of 4.

A  lipid

B  protein

C  carbohydrate

D  metabolite

E  DNA

A  They have an asymmetric carbon that makes them mirror images.

B  They differ in their arrangement around a double bond.

C  They possess the same chemical properties.

D  Their atoms and bonds are arranged in different sequences.

E  They have different molecular formulas.

A  homeostasis.

B  metabolism.

C  cellular respiration.

D  proteomics.

E  growth and development.

A  When the first crystals of NaCl are added to water or to methanol, they will not dissolve; but as more crystals are added, the crystals will begin to dissolve faster and faster.

B  The NaCl crystals will dissolve readily in methanol but will not dissolve in water.

C  The NaCl crystals will NOT dissolve in either water or methanol.

D  The NaCl crystals will dissolve readily in water but will not dissolve in methanol.

E  Equal amounts of NaCl crystals will dissolve in both water and methanol.

A  All life is composed of two or more cells, the smallest unit of life are cells, and cell division from pre-existing cells is the only way cell continue to exist.

B  Cells are the smallest unit of living organisms, and new cells form from pre-existing cells by cell division.

C  New cells come only from pre-existing cells by cell division.

D  All living things are composed of one or more cells.

E  All living organisms are composed of one or more cells, cells are the smallest units of life, and new cells come only from pre-existing cells by cell division.

A  unselective transportation.

B  cell-to-cell adhesion, barriers separating extracellular and intracellular environments, and cell signaling.

C  cell signaling and unselective transportation.

D  barriers separating extracellular and intracellular environments.

E  ATP synthesis.

F  cell-to-cell adhesion.

A  hydrophobic hydrocarbon chains facing the water and hydrophilic head groups in the middle.

B  hydrophilic hydrocarbon chains facing the water and hydrophobic head groups in the middle.

C  hydrophobic hydrocarbon chains in the middle and hydrophilic head groups facing the water.

D  hydrophilic hydrocarbon chains in the middle and hydrophobic head groups facing the water.

A  ribosome

B  plasmid

C  RNA strand

D  nucleolus

E  nucleoid

A  carbon and nitrogen.

B  oxygen and carbon.

C  hydrogen and carbon.

D  hydrogen and oxygen.

E  nitrogen and oxygen.

A  −COOH.

B  −SH.

C  −NH 2.

D  −CO.

E  −OH.

A  a measure of solute concentration.

B  reflects a measure of the amount of oil dissolved in water.

C  often expressed as grams per unit volume.

D  the weight of a solid substance.

E  a scientific term for determining the solubility of a substance in water.

A  prokaryotic and plant cells.

B  prokaryotic cells only.

C  plant cells only.

D  all cells.

E  animal cells only.

A  understand the behavior of entire biological systems by creating models

B  build high-throughput machines for the rapid acquisition of biological data

C  simplify complex problems by scaling up the problem

D  speed up the technological application of scientific knowledge.

E  analyze genomes from different species.

A  TRUE

B  FALSE

A  results in the splitting of a water molecule.

B  forms glucose monomers fromglycogen.

C  breaks down complex molecules to simple ones.

D  form glycerol and fatty acids from triglycerides.

E  is used to form polymers.

A  proteins.

B  shells.

C  molecules.

D  bonds.

E  atoms.

A  It is impossible to determine anything based on this evidence alone

B  Bacteria

C  Either bacteria or archaea

D  Archaea

E  Eukarya

A  organ

B  colony

C  tissue

D  cell

E  organelle

A  disulfide bonds and hydrogen bonds

B  hydrophobic bonds

C  peptide bonds

D  hydrogen bonds and peptide bonds

E  van der waals interactions

F  hydrogen bonds

A  negative feedback.

B  positive feedback.

C  bio-informatic regulation.

D  protein-protein interactions.

E  catalytic feedback.

A  phosphodiester

B  peptide

C  glycosidic

D  hydrogen

E  steroid

A  3

B  5

C  2

D  1

E  4

A  3823.1 mmol

B  382.31 mmol

C  38.231 mmol

D  3.8231 mmol

A  large and round

B  irregular and long

C  smooth and cuboidal

D  long and wide

A  an RNA composition.

B  an RNA composition, composition of two subunits, and ribosomal proteins being produced in the cytosol.

C  ribosomes being made of proteins, lipids, and carbohydrates and ribosomal proteins being produced in the cytosol.

D  composition of two subunits.

E  the cytosol site where all ribosomal components are produced.

F  ribosomal proteins being produced in the cytosol.

A  organism, nervous system, brain, nervous tissue, nerve cell

B  organism, nervous system, tissue, cell, organ

C  organism, nervous system, nervous tissue, molecule, cell

D  organism, nervous system, nervous tissue, brain

E  organism, brain, nervous system, nerve cell, nervous tissue

A  the release of H + into the solution.

B  an increase in pH.

C  both the release of H + and an increase in pH.

D  a decrease in pH.

E  both the release of H + and a decrease in pH.

A  −COOH

B    

C  −OH

D  −NH 2

E  −SH

F  −PO 4

A  an ion.

B  a gas.

C  salt.

D  oil.

E  an amphipathic molecule.

A  fat that is solid at room temperature.

B  beef fat.

C  olive oil.

D  butter.

E  vegetable oil

A  cause the tertiary structure of the protein to unfold.

B  alter the primary structure of the protein. In addition, it may alter the tertiary structure of the protein, and affect its biological activity.

C  always alter the biological activity or function of the protein.

D  always alter the primary structure of the protein and disrupt its biological activity.

E  only alter the primary structure of the protein

A  R-NH 2

B  R-SH

C  R-PO 4

D  R-CO-R

E  R-OH

A  carbon can form up to two covalent bonds with other elements.

B  carbon can form hydrogen bonds with water.

C  carbon can form both polar and nonpolar covalent bonds with various elements.

D  carbon bonds are stronger than any other bond.

E  carbon bonds cannot be broken inthe range of temperatures associated with life.