Lecture Exam 1

A  TRUE

B  FALSE

A  an amino acid

B  a monosaccharide

C  a fatty acid

D  a protein

E  a nucleotide

A  C2H6

B  C3H8

C  C2H4

D  C2H2

E  CH4

A    

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

C  is called the 2p orbital.

D  can have a maximum of 8 electrons.

E  can have a maximum of 2 electrons.

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

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

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

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

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

A  3H has 2 more electrons than 1H.

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

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

D  3H has 2 more protons than 1H.

E  3H has 2 more neutrons than 1H.

A  DNA will have a double-stranded structure.

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

E  Adenine will be present in the DNA.

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

A  dimers.

B  polymers.

C  monomers.

D  isomers.

E  isotopes.

A  possess both hydrophilic and hydrophobic properties.

B  possess only hydrophilic properties.

C  tend not to interact with other molecules.

D  possess only hydrophobic properties.

E  possess neither hydrophilic nor hydrophobic properties.

A  hepternary

B  tertiary

C  primary

D  quaternary

E  secondary

A  a theory

B  a discovery

C  a prediction

D  a hypothesis

E  a fact

A  FALSE

B  TRUE

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

B  None of these choices are correct.

C  an alkaline solution.

D  an acidic solution.

E  having a H+ concentration of 4.

A  lipid

B  DNA

C  metabolite

D  protein

E  carbohydrate

A  They differ in their arrangement around a double bond.

B  They have different molecular formulas.

C  They possess the same chemical properties.

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  homeostasis.

D  proteomics.

E  cellular respiration.

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

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

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

E  The NaCl crystals will dissolve readily in water but will not dissolve in 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  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 living things are composed of one or more cells.

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

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

A  unselective transportation.

B  cell-to-cell adhesion.

C  cell signaling and unselective transportation.

D  barriers separating extracellular and intracellular environments.

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

F  ATP synthesis.

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

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

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

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

A  plasmid

B  ribosome

C  nucleolus

D  nucleoid

E  RNA strand

A  hydrogen and oxygen.

B  carbon and nitrogen.

C  oxygen and carbon.

D  nitrogen and oxygen.

E  hydrogen and carbon.

A  −CO.

B  −OH.

C  −SH.

D  −COOH.

E  −NH 2.

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

B  the weight of a solid substance.

C  a measure of solute concentration.

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

E  often expressed as grams per unit volume.

A  animal cells only.

B  plant cells only.

C  prokaryotic cells only.

D  all cells.

E  prokaryotic and plant cells.

A  analyze genomes from different species.

B  simplify complex problems by scaling up the problem

C  speed up the technological application of scientific knowledge.

D  understand the behavior of entire biological systems by creating models

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  shells.

B  proteins.

C  atoms.

D  bonds.

E  molecules.

A  Eukarya

B  Bacteria

C  Either bacteria or archaea

D  Archaea

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

A  cell

B  organelle

C  organ

D  colony

E  tissue

A  hydrogen bonds

B  hydrogen bonds and peptide bonds

C  peptide bonds

D  van der waals interactions

E  disulfide bonds and hydrogen bonds

F  hydrophobic bonds

A  protein-protein interactions.

B  bio-informatic regulation.

C  negative feedback.

D  catalytic feedback.

E  positive feedback.

A  peptide

B  phosphodiester

C  steroid

D  glycosidic

E  hydrogen

A  3

B  1

C  2

D  5

E  4

A  3823.1 mmol

B  38.231 mmol

C  382.31 mmol

D  3.8231 mmol

A  smooth and cuboidal

B  large and round

C  irregular and long

D  long and wide

A  the cytosol site where all ribosomal components are produced.

B  ribosomal proteins being produced in the cytosol.

C  composition of two subunits.

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

E  an RNA composition.

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, nervous system, brain, nervous tissue, nerve cell

C  organism, nervous system, nervous tissue, brain

D  organism, nervous system, tissue, cell, organ

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

A  the release of H + into the solution.

B  a decrease in pH.

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

D  an increase in pH.

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

A  −NH 2

B    

C  −PO 4

D  −OH

E  −SH

F  −COOH

A  an ion.

B  oil.

C  salt.

D  an amphipathic molecule.

E  a gas.

A  vegetable oil

B  olive oil.

C  beef fat.

D  fat that is solid at room temperature.

E  butter.

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

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  only alter the primary structure of the protein

E  cause the tertiary structure of the protein to unfold.

A  R-SH

B  R-NH 2

C  R-PO 4

D  R-OH

E  R-CO-R

A  carbon bonds are stronger than any other bond.

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 both polar and nonpolar covalent bonds with various elements.

E  carbon can form hydrogen bonds with water.