Lecture Exam 1

A  FALSE

B  TRUE

A  an amino acid

B  a protein

C  a nucleotide

D  a monosaccharide

E  a fatty acid

A  CH4

B  C2H2

C  C2H6

D  C2H4

E  C3H8

A  is called the 2p orbital.

B  can have a maximum of 8 electrons.

C  can have a maximum of 2 electrons.

D    

E  is called the 1s orbital and can have a maximum of 8 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 Golgi apparatus holds the cytosol, and therefore the dye must be injected there.

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

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

B  3H has 2 more neutrons than 1H.

C  3H has 2 more electrons than 1H.

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

E  3H has 2 more protons 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 uracil instead of thymine 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.

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

F  Adenine will be present in the DNA.

A  dimers.

B  polymers.

C  isomers.

D  monomers.

E  isotopes.

A  possess neither hydrophilic nor hydrophobic properties.

B  possess both hydrophilic and hydrophobic properties.

C  tend not to interact with other molecules.

D  possess only hydrophilic properties.

E  possess only hydrophobic properties.

A  hepternary

B  primary

C  secondary

D  quaternary

E  tertiary

A  a fact

B  a prediction

C  a hypothesis

D  a theory

E  a discovery

A  FALSE

B  TRUE

A  having a H+ concentration of 4.

B  an acidic solution.

C  an alkaline solution.

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

E  None of these choices are correct.

A  metabolite

B  carbohydrate

C  protein

D  DNA

E  lipid

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

B  Their atoms and bonds are arranged in different sequences.

C  They differ in their arrangement around a double bond.

D  They possess the same chemical properties.

E  They have different molecular formulas.

A  metabolism.

B  cellular respiration.

C  homeostasis.

D  growth and development.

E  proteomics.

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

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

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

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

E  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.

A  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.

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

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

D  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.

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

A  cell-to-cell adhesion.

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

C  unselective transportation.

D  cell signaling and unselective transportation.

E  barriers separating extracellular and intracellular environments.

F  ATP synthesis.

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

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

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

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

A  RNA strand

B  plasmid

C  nucleolus

D  nucleoid

E  ribosome

A  carbon and nitrogen.

B  oxygen and carbon.

C  nitrogen and oxygen.

D  hydrogen and carbon.

E  hydrogen and oxygen.

A  −SH.

B  −OH.

C  −NH 2.

D  −COOH.

E  −CO.

A  a measure of solute concentration.

B  the weight of a solid substance.

C  often expressed as grams per unit volume.

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

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

A  all cells.

B  prokaryotic and plant cells.

C  plant cells only.

D  prokaryotic cells only.

E  animal cells only.

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

E  speed up the technological application of scientific knowledge.

A  TRUE

B  FALSE

A  breaks down complex molecules to simple ones.

B  is used to form polymers.

C  form glycerol and fatty acids from triglycerides.

D  results in the splitting of a water molecule.

E  forms glucose monomers fromglycogen.

A  bonds.

B  proteins.

C  atoms.

D  molecules.

E  shells.

A  Eukarya

B  Archaea

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

D  Bacteria

E  Either bacteria or archaea

A  cell

B  organ

C  tissue

D  colony

E  organelle

A  hydrophobic bonds

B  disulfide bonds and hydrogen bonds

C  peptide bonds

D  hydrogen bonds

E  hydrogen bonds and peptide bonds

F  van der waals interactions

A  catalytic feedback.

B  protein-protein interactions.

C  bio-informatic regulation.

D  negative feedback.

E  positive feedback.

A  steroid

B  glycosidic

C  phosphodiester

D  hydrogen

E  peptide

A  3

B  4

C  1

D  5

E  2

A  3823.1 mmol

B  38.231 mmol

C  382.31 mmol

D  3.8231 mmol

A  large and round

B  smooth and cuboidal

C  irregular and long

D  long and wide

A  ribosomes being made of proteins, lipids, and carbohydrates 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, composition of two subunits, and ribosomal proteins being produced in the cytosol.

E  an RNA composition.

F  ribosomal proteins being produced in the cytosol.

A  organism, nervous system, nervous tissue, brain

B  organism, nervous system, tissue, cell, organ

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

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

E  organism, nervous system, nervous tissue, molecule, cell

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

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

C  the release of H + into the solution.

D  a decrease in pH.

E  an increase in pH.

A  −NH 2

B  −OH

C  −COOH

D  −SH

E    

F  −PO 4

A  an amphipathic molecule.

B  salt.

C  an ion.

D  a gas.

E  oil.

A  olive oil.

B  fat that is solid at room temperature.

C  beef fat.

D  vegetable oil

E  butter.

A  only alter the primary structure of the protein

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

C  cause the tertiary structure of the protein to unfold.

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

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

A  R-PO 4

B  R-NH 2

C  R-OH

D  R-SH

E  R-CO-R

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

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

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

D  carbon bonds are stronger than any other bond.

E  carbon can form hydrogen bonds with water.