Lecture Exam 1

A  TRUE

B  FALSE

A  a nucleotide

B  a monosaccharide

C  a protein

D  an amino acid

E  a fatty acid

A  CH4

B  C2H2

C  C3H8

D  C2H4

E  C2H6

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

B    

C  is called the 2p orbital.

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

E  can have a maximum of 8 electrons.

F  can have a maximum of 2 electrons.

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

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

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

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

A  3H has 2 more neutrons than 1H.

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

C  3H has 2 more protons than 1H.

D  3H has 2 more electrons 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 ribose as the sugar in its backbone and DNA will have uracil instead of thymine in its nitrogenous bases.

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

D  DNA will have a double-stranded structure.

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

F  Adenine will be present in the DNA.

A  isotopes.

B  dimers.

C  polymers.

D  isomers.

E  monomers.

A  possess only hydrophobic properties.

B  possess both hydrophilic and hydrophobic properties.

C  possess neither hydrophilic nor hydrophobic properties.

D  tend not to interact with other molecules.

E  possess only hydrophilic properties.

A  secondary

B  quaternary

C  hepternary

D  tertiary

E  primary

A  a hypothesis

B  a discovery

C  a theory

D  a prediction

E  a fact

A  FALSE

B  TRUE

A  an alkaline solution.

B  an acidic solution.

C  having a H+ concentration of 4.

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

E  None of these choices are correct.

A  protein

B  metabolite

C  carbohydrate

D  DNA

E  lipid

A  They possess the same chemical properties.

B  They differ in their arrangement around a double bond.

C  They have different molecular formulas.

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

E  Their atoms and bonds are arranged in different sequences.

A  growth and development.

B  metabolism.

C  proteomics.

D  homeostasis.

E  cellular respiration.

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

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

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

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

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

B  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.

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

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

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  cell-to-cell adhesion.

B  barriers separating extracellular and intracellular environments.

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

D  cell signaling and unselective transportation.

E  ATP synthesis.

F  unselective transportation.

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

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

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

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

A  nucleolus

B  RNA strand

C  plasmid

D  nucleoid

E  ribosome

A  carbon and nitrogen.

B  nitrogen and oxygen.

C  hydrogen and oxygen.

D  oxygen and carbon.

E  hydrogen and carbon.

A  −OH.

B  −COOH.

C  −NH 2.

D  −CO.

E  −SH.

A  often expressed as grams per unit volume.

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

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

D  a measure of solute concentration.

E  the weight of a solid substance.

A  all cells.

B  prokaryotic and plant cells.

C  animal cells only.

D  prokaryotic cells only.

E  plant cells only.

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

B  understand the behavior of entire biological systems by creating models

C  analyze genomes from different species.

D  simplify complex problems by scaling up the problem

E  speed up the technological application of scientific knowledge.

A  TRUE

B  FALSE

A  breaks down complex molecules to simple ones.

B  results in the splitting of a water molecule.

C  forms glucose monomers fromglycogen.

D  is used to form polymers.

E  form glycerol and fatty acids from triglycerides.

A  proteins.

B  molecules.

C  shells.

D  atoms.

E  bonds.

A  Eukarya

B  Archaea

C  Bacteria

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

E  Either bacteria or archaea

A  organelle

B  cell

C  colony

D  tissue

E  organ

A  hydrogen bonds and peptide bonds

B  disulfide bonds and hydrogen bonds

C  hydrophobic bonds

D  van der waals interactions

E  peptide bonds

F  hydrogen bonds

A  catalytic feedback.

B  positive feedback.

C  negative feedback.

D  protein-protein interactions.

E  bio-informatic regulation.

A  peptide

B  phosphodiester

C  steroid

D  hydrogen

E  glycosidic

A  2

B  4

C  1

D  5

E  3

A  382.31 mmol

B  38.231 mmol

C  3.8231 mmol

D  3823.1 mmol

A  long and wide

B  smooth and cuboidal

C  irregular and long

D  large and round

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

B  the cytosol site where all ribosomal components are produced.

C  composition of two subunits.

D  an RNA composition.

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

F  ribosomal proteins being produced in the cytosol.

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

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

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

D  organism, nervous system, tissue, cell, organ

E  organism, nervous system, nervous tissue, brain

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

B  a decrease in pH.

C  the release of H + into the solution.

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

E  an increase in pH.

A  −NH 2

B  −COOH

C  −SH

D  −PO 4

E  −OH

F    

A  a gas.

B  oil.

C  salt.

D  an ion.

E  an amphipathic molecule.

A  beef fat.

B  butter.

C  fat that is solid at room temperature.

D  vegetable oil

E  olive oil.

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

B  cause the tertiary structure of the protein to unfold.

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

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

E  only alter the primary structure of the protein

A  R-PO 4

B  R-OH

C  R-CO-R

D  R-SH

E  R-NH 2

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

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

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

D  carbon can form hydrogen bonds with water.

E  carbon bonds are stronger than any other bond.