Lecture Exam 1

A  TRUE

B  FALSE

A  a protein

B  a fatty acid

C  an amino acid

D  a monosaccharide

E  a nucleotide

A  C3H8

B  C2H4

C  C2H2

D  C2H6

E  CH4

A  can have a maximum of 2 electrons.

B  is called the 2p orbital.

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

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

E  can have a maximum of 8 electrons.

F    

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

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

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  Adenine will be present in the DNA.

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

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

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

A  isotopes.

B  monomers.

C  isomers.

D  dimers.

E  polymers.

A  possess neither hydrophilic nor hydrophobic properties.

B  possess only hydrophilic properties.

C  tend not to interact with other molecules.

D  possess both hydrophilic and hydrophobic properties.

E  possess only hydrophobic properties.

A  hepternary

B  tertiary

C  primary

D  quaternary

E  secondary

A  a fact

B  a discovery

C  a prediction

D  a hypothesis

E  a theory

A  TRUE

B  FALSE

A  an alkaline solution.

B  an acidic solution.

C  None of these choices are correct.

D  having a H+ concentration of 4.

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

A  protein

B  metabolite

C  lipid

D  DNA

E  carbohydrate

A  They differ in their arrangement around a double bond.

B  Their atoms and bonds are arranged in different sequences.

C  They possess the same chemical properties.

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

E  They have different molecular formulas.

A  proteomics.

B  growth and development.

C  metabolism.

D  homeostasis.

E  cellular respiration.

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

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

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

D  The NaCl crystals will NOT dissolve in either water or 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 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  New cells come only 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  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  barriers separating extracellular and intracellular environments.

B  ATP synthesis.

C  cell-to-cell adhesion.

D  unselective transportation.

E  cell signaling and unselective transportation.

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

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

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

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  plasmid

B  nucleoid

C  ribosome

D  RNA strand

E  nucleolus

A  carbon and nitrogen.

B  hydrogen and carbon.

C  hydrogen and oxygen.

D  oxygen and carbon.

E  nitrogen and oxygen.

A  −OH.

B  −CO.

C  −COOH.

D  −SH.

E  −NH 2.

A  often expressed as grams per unit volume.

B  the weight of a solid substance.

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

D  a measure of solute concentration.

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

A  prokaryotic cells only.

B  animal cells only.

C  plant cells only.

D  prokaryotic and plant cells.

E  all cells.

A  simplify complex problems by scaling up the problem

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

C  speed up the technological application of scientific knowledge.

D  understand the behavior of entire biological systems by creating models

E  analyze genomes from different species.

A  TRUE

B  FALSE

A  is used to form polymers.

B  results in the splitting of a water molecule.

C  forms glucose monomers fromglycogen.

D  form glycerol and fatty acids from triglycerides.

E  breaks down complex molecules to simple ones.

A  atoms.

B  proteins.

C  bonds.

D  shells.

E  molecules.

A  Eukarya

B  Archaea

C  Either bacteria or archaea

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

E  Bacteria

A  colony

B  tissue

C  organ

D  organelle

E  cell

A  disulfide bonds and hydrogen bonds

B  hydrophobic bonds

C  hydrogen bonds

D  peptide bonds

E  hydrogen bonds and peptide bonds

F  van der waals interactions

A  negative feedback.

B  bio-informatic regulation.

C  positive feedback.

D  protein-protein interactions.

E  catalytic feedback.

A  hydrogen

B  glycosidic

C  steroid

D  phosphodiester

E  peptide

A  3

B  1

C  2

D  4

E  5

A  382.31 mmol

B  3.8231 mmol

C  3823.1 mmol

D  38.231 mmol

A  long and wide

B  irregular and long

C  smooth and cuboidal

D  large and round

A  ribosomal proteins being produced in the cytosol.

B  composition of two subunits.

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

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

E  the cytosol site where all ribosomal components are produced.

F  an RNA composition.

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

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

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

D  organism, nervous system, nervous tissue, brain

E  organism, nervous system, tissue, cell, organ

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

B  a decrease in pH.

C  the release of H + into the solution.

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

E  an increase in pH.

A  −OH

B  −COOH

C  −PO 4

D    

E  −SH

F  −NH 2

A  oil.

B  a gas.

C  an ion.

D  an amphipathic molecule.

E  salt.

A  vegetable oil

B  beef fat.

C  fat that is solid at room temperature.

D  olive oil.

E  butter.

A  cause the tertiary structure of the protein to unfold.

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  only alter the primary structure of the protein

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

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

A  R-CO-R

B  R-OH

C  R-SH

D  R-PO 4

E  R-NH 2

A  carbon bonds are stronger than any other bond.

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

C  carbon can form hydrogen bonds with water.

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

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