Lecture Exam 1

A  TRUE

B  FALSE

A  an amino acid

B  a protein

C  a monosaccharide

D  a nucleotide

E  a fatty acid

A  C2H6

B  C3H8

C  C2H2

D  CH4

E  C2H4

A  is called the 2p orbital.

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

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

D  can have a maximum of 2 electrons.

E    

F  can have a maximum of 8 electrons.

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

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

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 protons than 1H.

B  3H has 2 more electrons than 1H.

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

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

E  3H has 2 more neutrons than 1H.

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

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

C  DNA will have a double-stranded structure.

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

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

F  Adenine will be present in the DNA.

A  dimers.

B  monomers.

C  isomers.

D  isotopes.

E  polymers.

A  tend not to interact with other molecules.

B  possess neither hydrophilic nor hydrophobic properties.

C  possess only hydrophobic properties.

D  possess both hydrophilic and hydrophobic properties.

E  possess only hydrophilic properties.

A  primary

B  secondary

C  quaternary

D  hepternary

E  tertiary

A  a prediction

B  a discovery

C  a theory

D  a hypothesis

E  a fact

A  FALSE

B  TRUE

A  None of these choices are correct.

B  an acidic solution.

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

D  having a H+ concentration of 4.

E  an alkaline solution.

A  lipid

B  DNA

C  carbohydrate

D  protein

E  metabolite

A  Their atoms and bonds are arranged in different sequences.

B  They differ in their arrangement around a double bond.

C  They have different molecular formulas.

D  They possess the same chemical properties.

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

A  proteomics.

B  homeostasis.

C  metabolism.

D  growth and development.

E  cellular respiration.

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

B  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.

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

A  New cells come only 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 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.

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

B  cell signaling and unselective transportation.

C  ATP synthesis.

D  barriers separating extracellular and intracellular environments.

E  cell-to-cell adhesion.

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  nucleoid

B  ribosome

C  RNA strand

D  nucleolus

E  plasmid

A  hydrogen and carbon.

B  carbon and nitrogen.

C  hydrogen and oxygen.

D  oxygen and carbon.

E  nitrogen and oxygen.

A  −OH.

B  −NH 2.

C  −COOH.

D  −SH.

E  −CO.

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

B  a measure of solute concentration.

C  often expressed as grams per unit volume.

D  the weight of a solid substance.

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

A  animal cells only.

B  prokaryotic and plant cells.

C  prokaryotic cells only.

D  all cells.

E  plant cells only.

A  analyze genomes from different species.

B  simplify complex problems by scaling up the problem

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  results in the splitting of a water molecule.

B  is used to form polymers.

C  form glycerol and fatty acids from triglycerides.

D  forms glucose monomers fromglycogen.

E  breaks down complex molecules to simple ones.

A  shells.

B  bonds.

C  atoms.

D  molecules.

E  proteins.

A  Either bacteria or archaea

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

C  Bacteria

D  Archaea

E  Eukarya

A  organelle

B  cell

C  tissue

D  organ

E  colony

A  hydrophobic bonds

B  hydrogen bonds

C  peptide bonds

D  van der waals interactions

E  disulfide bonds and hydrogen bonds

F  hydrogen bonds and peptide bonds

A  bio-informatic regulation.

B  negative feedback.

C  positive feedback.

D  catalytic feedback.

E  protein-protein interactions.

A  steroid

B  phosphodiester

C  peptide

D  hydrogen

E  glycosidic

A  3

B  1

C  5

D  4

E  2

A  3.8231 mmol

B  382.31 mmol

C  38.231 mmol

D  3823.1 mmol

A  irregular and long

B  large and round

C  smooth and cuboidal

D  long and wide

A  composition of two subunits.

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

E  the cytosol site where all ribosomal components are produced.

F  an RNA composition.

A  organism, nervous system, tissue, cell, organ

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

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

D  organism, nervous system, nervous tissue, brain

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

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

B  a decrease in pH.

C  an increase in pH.

D  the release of H + into the solution.

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

A  −OH

B  −SH

C  −COOH

D  −NH 2

E    

F  −PO 4

A  a gas.

B  an amphipathic molecule.

C  oil.

D  salt.

E  an ion.

A  vegetable oil

B  olive oil.

C  fat that is solid at room temperature.

D  butter.

E  beef fat.

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

B  only alter the primary structure of the protein

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  cause the tertiary structure of the protein to unfold.

A  R-SH

B  R-PO 4

C  R-NH 2

D  R-OH

E  R-CO-R

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

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

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

D  carbon can form hydrogen bonds with water.

E  carbon bonds are stronger than any other bond.