Lecture Exam 1

A  TRUE

B  FALSE

A  a protein

B  an amino acid

C  a monosaccharide

D  a fatty acid

E  a nucleotide

A  CH4

B  C3H8

C  C2H6

D  C2H2

E  C2H4

A  can have a maximum of 8 electrons.

B    

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

D  can have a maximum of 2 electrons.

E  is called the 2p orbital.

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

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

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

A  3H has 2 more protons than 1H.

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

C  3H has 2 more electrons than 1H.

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

E  3H has 2 more neutrons than 1H.

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

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

C  DNA will have a double-stranded structure.

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

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

F  Adenine will be present in the DNA.

A  monomers.

B  dimers.

C  polymers.

D  isomers.

E  isotopes.

A  tend not to interact with other molecules.

B  possess both hydrophilic and hydrophobic properties.

C  possess only hydrophobic properties.

D  possess only hydrophilic properties.

E  possess neither hydrophilic nor hydrophobic properties.

A  tertiary

B  secondary

C  primary

D  quaternary

E  hepternary

A  a prediction

B  a theory

C  a hypothesis

D  a discovery

E  a fact

A  TRUE

B  FALSE

A  None of these choices are correct.

B  an acidic solution.

C  an alkaline solution.

D  having a H+ concentration of 4.

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

A  protein

B  DNA

C  lipid

D  metabolite

E  carbohydrate

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

B  They differ in their arrangement around a double bond.

C  They possess the same chemical properties.

D  They have different molecular formulas.

E  Their atoms and bonds are arranged in different sequences.

A  proteomics.

B  cellular respiration.

C  metabolism.

D  homeostasis.

E  growth and development.

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

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

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

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

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

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

E  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.

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

B  ATP synthesis.

C  cell-to-cell adhesion.

D  barriers separating extracellular and intracellular environments.

E  unselective transportation.

F  cell signaling and unselective transportation.

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  ribosome

B  nucleolus

C  nucleoid

D  plasmid

E  RNA strand

A  hydrogen and oxygen.

B  carbon and nitrogen.

C  hydrogen and carbon.

D  oxygen and carbon.

E  nitrogen and oxygen.

A  −SH.

B  −COOH.

C  −OH.

D  −CO.

E  −NH 2.

A  often expressed as grams per unit volume.

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

C  the weight of a solid substance.

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  all cells.

D  prokaryotic and plant cells.

E  plant cells only.

A  understand the behavior of entire biological systems by creating models

B  simplify complex problems by scaling up the problem

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

D  speed up the technological application of scientific knowledge.

E  analyze genomes from different species.

A  FALSE

B  TRUE

A  forms glucose monomers fromglycogen.

B  is used to form polymers.

C  results in the splitting of a water molecule.

D  breaks down complex molecules to simple ones.

E  form glycerol and fatty acids from triglycerides.

A  bonds.

B  molecules.

C  atoms.

D  shells.

E  proteins.

A  Bacteria

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

C  Eukarya

D  Archaea

E  Either bacteria or archaea

A  colony

B  organelle

C  organ

D  cell

E  tissue

A  hydrophobic bonds

B  hydrogen bonds

C  disulfide bonds and hydrogen bonds

D  hydrogen bonds and peptide bonds

E  van der waals interactions

F  peptide bonds

A  negative feedback.

B  positive feedback.

C  catalytic feedback.

D  bio-informatic regulation.

E  protein-protein interactions.

A  phosphodiester

B  steroid

C  peptide

D  glycosidic

E  hydrogen

A  2

B  1

C  3

D  4

E  5

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  long and wide

D  smooth and cuboidal

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  the cytosol site where all ribosomal components are produced.

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

F  an RNA composition.

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

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

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

D  organism, nervous system, tissue, cell, organ

E  organism, nervous system, nervous tissue, brain

A  an increase in pH.

B  the release of H + into the solution.

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

D  a decrease in pH.

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

A  −SH

B  −COOH

C  −NH 2

D  −OH

E    

F  −PO 4

A  salt.

B  a gas.

C  oil.

D  an amphipathic molecule.

E  an ion.

A  butter.

B  beef fat.

C  olive oil.

D  fat that is solid at room temperature.

E  vegetable oil

A  cause the tertiary structure of the protein to unfold.

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

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

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

E  only alter the primary structure of the protein

A  R-OH

B  R-CO-R

C  R-NH 2

D  R-PO 4

E  R-SH

A  carbon bonds are stronger than any other bond.

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

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

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

E  carbon can form hydrogen bonds with water.