Lecture Exam 1

A  FALSE

B  TRUE

A  an amino acid

B  a nucleotide

C  a monosaccharide

D  a protein

E  a fatty acid

A  C2H4

B  C2H6

C  C2H2

D  C3H8

E  CH4

A  can have a maximum of 2 electrons.

B  is called the 2p orbital.

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

D  can have a maximum of 8 electrons.

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

F    

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

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

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

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

A  3H has 2 more electrons than 1H.

B  3H has 2 more protons than 1H.

C  3H has 2 more neutrons than 1H.

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

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

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

B  DNA will have a double-stranded structure.

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

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

E  Adenine will be present in the DNA.

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

A  monomers.

B  isotopes.

C  isomers.

D  dimers.

E  polymers.

A  possess both hydrophilic and hydrophobic properties.

B  possess only hydrophilic properties.

C  tend not to interact with other molecules.

D  possess neither hydrophilic nor hydrophobic properties.

E  possess only hydrophobic properties.

A  primary

B  quaternary

C  tertiary

D  secondary

E  hepternary

A  a discovery

B  a theory

C  a hypothesis

D  a prediction

E  a fact

A  TRUE

B  FALSE

A  an acidic solution.

B  None of these choices are correct.

C  having a H+ concentration of 4.

D  an alkaline solution.

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

A  metabolite

B  carbohydrate

C  protein

D  lipid

E  DNA

A  They have different molecular formulas.

B  They differ in their arrangement around a double bond.

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

D  They possess the same chemical properties.

E  Their atoms and bonds are arranged in different sequences.

A  homeostasis.

B  growth and development.

C  metabolism.

D  proteomics.

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

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

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

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

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

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

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

E  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.

A  cell-to-cell adhesion.

B  unselective transportation.

C  ATP synthesis.

D  barriers separating extracellular and intracellular environments.

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

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  RNA strand

B  nucleolus

C  ribosome

D  plasmid

E  nucleoid

A  hydrogen and carbon.

B  carbon and nitrogen.

C  hydrogen and oxygen.

D  oxygen and carbon.

E  nitrogen and oxygen.

A  −SH.

B  −CO.

C  −NH 2.

D  −COOH.

E  −OH.

A  the weight of a solid substance.

B  often expressed as grams per unit volume.

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

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

E  a measure of solute concentration.

A  plant cells only.

B  all cells.

C  prokaryotic cells only.

D  animal cells only.

E  prokaryotic and plant cells.

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

B  speed up the technological application of scientific knowledge.

C  simplify complex problems by scaling up the problem

D  understand the behavior of entire biological systems by creating models

E  analyze genomes from different species.

A  TRUE

B  FALSE

A  forms glucose monomers fromglycogen.

B  results in the splitting of a water molecule.

C  is used to form polymers.

D  breaks down complex molecules to simple ones.

E  form glycerol and fatty acids from triglycerides.

A  shells.

B  proteins.

C  atoms.

D  bonds.

E  molecules.

A  Archaea

B  Eukarya

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

D  Bacteria

E  Either bacteria or archaea

A  tissue

B  colony

C  organ

D  cell

E  organelle

A  peptide bonds

B  hydrogen bonds

C  hydrogen bonds and peptide bonds

D  van der waals interactions

E  hydrophobic bonds

F  disulfide bonds and hydrogen bonds

A  bio-informatic regulation.

B  positive feedback.

C  catalytic feedback.

D  protein-protein interactions.

E  negative feedback.

A  hydrogen

B  steroid

C  phosphodiester

D  glycosidic

E  peptide

A  3

B  1

C  4

D  5

E  2

A  38.231 mmol

B  3.8231 mmol

C  382.31 mmol

D  3823.1 mmol

A  smooth and cuboidal

B  irregular and long

C  long and wide

D  large and round

A  the cytosol site where all ribosomal components are produced.

B  an RNA composition, composition of two subunits, and 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  composition of two subunits.

E  an RNA composition.

F  ribosomal proteins being produced in the cytosol.

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

B  organism, nervous system, tissue, cell, organ

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

D  organism, nervous system, nervous tissue, molecule, cell

E  organism, nervous system, nervous tissue, brain

A  a decrease in pH.

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

C  the release of H + into the solution.

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

E  an increase in pH.

A  −SH

B    

C  −PO 4

D  −OH

E  −NH 2

F  −COOH

A  an amphipathic molecule.

B  salt.

C  a gas.

D  oil.

E  an ion.

A  beef fat.

B  fat that is solid at room temperature.

C  olive oil.

D  butter.

E  vegetable oil

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

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

C  only alter the primary structure of the protein

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-OH

B  R-PO 4

C  R-SH

D  R-NH 2

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.