Lecture Exam 1

A  FALSE

B  TRUE

A  a nucleotide

B  a protein

C  an amino acid

D  a fatty acid

E  a monosaccharide

A  C2H4

B  C3H8

C  C2H2

D  CH4

E  C2H6

A    

B  is called the 2p orbital.

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

D  can have a maximum of 8 electrons.

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

F  can have a maximum of 2 electrons.

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

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

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

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

A  3H has 2 more electrons than 1H.

B  3H has 2 more protons than 1H.

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

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

E  3H has 2 more neutrons than 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 a double-stranded structure.

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

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

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

F  Adenine will be present in the DNA.

A  isotopes.

B  dimers.

C  monomers.

D  isomers.

E  polymers.

A  possess both hydrophilic and hydrophobic properties.

B  possess only hydrophobic properties.

C  possess only hydrophilic properties.

D  possess neither hydrophilic nor hydrophobic properties.

E  tend not to interact with other molecules.

A  hepternary

B  tertiary

C  secondary

D  primary

E  quaternary

A  a prediction

B  a discovery

C  a fact

D  a theory

E  a hypothesis

A  FALSE

B  TRUE

A  None of these choices are correct.

B  an alkaline solution.

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

D  having a H+ concentration of 4.

E  an acidic solution.

A  metabolite

B  lipid

C  carbohydrate

D  protein

E  DNA

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

B  They differ in their arrangement around a double bond.

C  Their atoms and bonds are arranged in different sequences.

D  They possess the same chemical properties.

E  They have different molecular formulas.

A  proteomics.

B  homeostasis.

C  growth and development.

D  metabolism.

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 water but will not dissolve in methanol.

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

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

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

B  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.

C  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.

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

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

A  unselective transportation.

B  barriers separating extracellular and intracellular environments.

C  cell signaling and unselective transportation.

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

E  ATP synthesis.

F  cell-to-cell adhesion.

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

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

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

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

A  plasmid

B  nucleoid

C  nucleolus

D  RNA strand

E  ribosome

A  oxygen and carbon.

B  carbon and nitrogen.

C  hydrogen and oxygen.

D  nitrogen and oxygen.

E  hydrogen and carbon.

A  −SH.

B  −NH 2.

C  −COOH.

D  −OH.

E  −CO.

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

B  a measure of solute concentration.

C  the weight of a solid substance.

D  often expressed as grams per unit volume.

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

A  plant cells only.

B  prokaryotic and plant cells.

C  animal cells only.

D  prokaryotic cells only.

E  all cells.

A  simplify complex problems by scaling up the problem

B  analyze genomes from different species.

C  understand the behavior of entire biological systems by creating models

D  speed up the technological application of scientific knowledge.

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

A  TRUE

B  FALSE

A  is used to form polymers.

B  forms glucose monomers fromglycogen.

C  form glycerol and fatty acids from triglycerides.

D  results in the splitting of a water molecule.

E  breaks down complex molecules to simple ones.

A  molecules.

B  shells.

C  bonds.

D  atoms.

E  proteins.

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

B  Bacteria

C  Archaea

D  Either bacteria or archaea

E  Eukarya

A  organelle

B  colony

C  cell

D  tissue

E  organ

A  hydrogen bonds and peptide bonds

B  disulfide bonds and hydrogen bonds

C  hydrogen bonds

D  hydrophobic bonds

E  peptide bonds

F  van der waals interactions

A  negative feedback.

B  positive feedback.

C  bio-informatic regulation.

D  catalytic feedback.

E  protein-protein interactions.

A  phosphodiester

B  glycosidic

C  hydrogen

D  peptide

E  steroid

A  5

B  3

C  4

D  2

E  1

A  382.31 mmol

B  38.231 mmol

C  3823.1 mmol

D  3.8231 mmol

A  irregular and long

B  large and round

C  long and wide

D  smooth and cuboidal

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

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

C  an RNA composition.

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, nervous tissue, brain

B  organism, nervous system, nervous tissue, molecule, cell

C  organism, nervous system, tissue, cell, organ

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

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

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

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

C  a decrease in pH.

D  an increase in pH.

E  the release of H + into the solution.

A  −NH 2

B    

C  −COOH

D  −PO 4

E  −OH

F  −SH

A  an amphipathic molecule.

B  a gas.

C  an ion.

D  oil.

E  salt.

A  olive oil.

B  butter.

C  beef fat.

D  fat that is solid at room temperature.

E  vegetable oil

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

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 primary structure of the protein and disrupt its biological activity.

D  only alter the primary structure of the protein

E  cause the tertiary structure of the protein to unfold.

A  R-SH

B  R-CO-R

C  R-OH

D  R-PO 4

E  R-NH 2

A  carbon can form hydrogen bonds with water.

B  carbon bonds are stronger than any other bond.

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

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

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