Lecture Exam 1

A  FALSE

B  TRUE

A  a monosaccharide

B  a protein

C  a fatty acid

D  a nucleotide

E  an amino acid

A  C3H8

B  CH4

C  C2H6

D  C2H4

E  C2H2

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

B  can have a maximum of 8 electrons.

C  is called the 2p orbital.

D  can have a maximum of 2 electrons.

E    

F  is called the 2p orbital and can have a maximum of 2 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  Adenine will be present in the DNA.

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

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

F  DNA will have a double-stranded structure.

A  isotopes.

B  isomers.

C  polymers.

D  monomers.

E  dimers.

A  possess only hydrophobic properties.

B  possess neither hydrophilic nor hydrophobic properties.

C  possess only hydrophilic properties.

D  possess both hydrophilic and hydrophobic properties.

E  tend not to interact with other molecules.

A  secondary

B  primary

C  tertiary

D  quaternary

E  hepternary

A  a theory

B  a hypothesis

C  a discovery

D  a prediction

E  a fact

A  FALSE

B  TRUE

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

B  an alkaline solution.

C  having a H+ concentration of 4.

D  an acidic solution.

E  None of these choices are correct.

A  metabolite

B  lipid

C  DNA

D  protein

E  carbohydrate

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

B  They have different molecular formulas.

C  They differ in their arrangement around a double bond.

D  They possess the same chemical properties.

E  Their atoms and bonds are arranged in different sequences.

A  homeostasis.

B  metabolism.

C  proteomics.

D  cellular respiration.

E  growth and development.

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 water but will not dissolve in methanol.

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

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

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

D  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.

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  ATP synthesis.

C  unselective transportation.

D  barriers separating extracellular and intracellular environments.

E  cell-to-cell adhesion.

F  cell signaling and unselective transportation.

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

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

A  nucleoid

B  plasmid

C  nucleolus

D  ribosome

E  RNA strand

A  carbon and nitrogen.

B  hydrogen and carbon.

C  nitrogen and oxygen.

D  hydrogen and oxygen.

E  oxygen and carbon.

A  −SH.

B  −CO.

C  −COOH.

D  −OH.

E  −NH 2.

A  often expressed as grams per unit volume.

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

C  the weight of a solid substance.

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

E  a measure of solute concentration.

A  animal cells only.

B  prokaryotic cells only.

C  all cells.

D  prokaryotic and plant cells.

E  plant cells only.

A  speed up the technological application of scientific knowledge.

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

A  FALSE

B  TRUE

A  results in the splitting of a water molecule.

B  form glycerol and fatty acids from triglycerides.

C  forms glucose monomers fromglycogen.

D  is used to form polymers.

E  breaks down complex molecules to simple ones.

A  proteins.

B  shells.

C  bonds.

D  molecules.

E  atoms.

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

B  Either bacteria or archaea

C  Eukarya

D  Archaea

E  Bacteria

A  organelle

B  colony

C  tissue

D  organ

E  cell

A  hydrophobic bonds

B  peptide bonds

C  disulfide bonds and hydrogen bonds

D  van der waals interactions

E  hydrogen bonds and peptide bonds

F  hydrogen bonds

A  negative feedback.

B  catalytic feedback.

C  protein-protein interactions.

D  positive feedback.

E  bio-informatic regulation.

A  phosphodiester

B  hydrogen

C  glycosidic

D  steroid

E  peptide

A  5

B  3

C  4

D  2

E  1

A  38.231 mmol

B  3823.1 mmol

C  382.31 mmol

D  3.8231 mmol

A  irregular and long

B  large and round

C  smooth and cuboidal

D  long and wide

A  the cytosol site where all ribosomal components are produced.

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

C  an RNA composition.

D  ribosomal proteins being produced in the cytosol.

E  composition of two subunits.

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

A  organism, nervous system, nervous tissue, molecule, cell

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

C  organism, nervous system, nervous tissue, brain

D  organism, nervous system, tissue, cell, organ

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

A  an increase in pH.

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

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

D  a decrease in pH.

E  the release of H + into the solution.

A    

B  −OH

C  −PO 4

D  −SH

E  −COOH

F  −NH 2

A  a gas.

B  salt.

C  an ion.

D  oil.

E  an amphipathic molecule.

A  beef fat.

B  fat that is solid at room temperature.

C  olive oil.

D  butter.

E  vegetable oil

A  only alter the primary structure of the protein

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

C  cause the tertiary structure of the protein to unfold.

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

A  R-CO-R

B  R-PO 4

C  R-NH 2

D  R-OH

E  R-SH

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

B  carbon can form hydrogen bonds with water.

C  carbon bonds are stronger than any other bond.

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

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