Lecture Exam 1

A  TRUE

B  FALSE

A  an amino acid

B  a fatty acid

C  a monosaccharide

D  a nucleotide

E  a protein

A  C3H8

B  C2H2

C  CH4

D  C2H4

E  C2H6

A  is called the 2p orbital and can have a maximum of 2 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  can have a maximum of 8 electrons.

F  is called the 2p orbital.

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

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

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

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

A  3H has 2 more neutrons than 1H.

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

C  3H has 2 more electrons than 1H.

D  3H has 2 more protons than 1H.

E  3H has the same number of neutrons as 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 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.

E  Adenine will be present in the DNA.

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

A  dimers.

B  isotopes.

C  monomers.

D  isomers.

E  polymers.

A  possess only hydrophobic properties.

B  possess neither hydrophilic nor hydrophobic properties.

C  possess only hydrophilic properties.

D  possess both hydrophilic and hydrophobic properties.

E  tend not to interact with other molecules.

A  secondary

B  primary

C  tertiary

D  hepternary

E  quaternary

A  a prediction

B  a discovery

C  a hypothesis

D  a theory

E  a fact

A  FALSE

B  TRUE

A  having a H+ concentration of 4.

B  None of these choices are correct.

C  an acidic solution.

D  an alkaline solution.

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

A  DNA

B  protein

C  lipid

D  carbohydrate

E  metabolite

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

B  They have different molecular formulas.

C  They possess the same chemical properties.

D  They differ in their arrangement around a double bond.

E  Their atoms and bonds are arranged in different sequences.

A  proteomics.

B  metabolism.

C  growth and development.

D  cellular respiration.

E  homeostasis.

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

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

C  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.

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

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

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

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

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

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 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 signaling and unselective transportation.

B  barriers separating extracellular and intracellular environments.

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

D  unselective transportation.

E  cell-to-cell adhesion.

F  ATP synthesis.

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

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

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

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

A  nucleolus

B  plasmid

C  RNA strand

D  ribosome

E  nucleoid

A  hydrogen and carbon.

B  nitrogen and oxygen.

C  oxygen and carbon.

D  carbon and nitrogen.

E  hydrogen and oxygen.

A  −NH 2.

B  −COOH.

C  −CO.

D  −OH.

E  −SH.

A  a measure of solute concentration.

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

C  often expressed as grams per unit volume.

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

E  the weight of a solid substance.

A  prokaryotic cells only.

B  animal cells only.

C  all cells.

D  plant 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  analyze genomes from different species.

E  understand the behavior of entire biological systems by creating models

A  TRUE

B  FALSE

A  form glycerol and fatty acids from triglycerides.

B  results in the splitting of a water molecule.

C  breaks down complex molecules to simple ones.

D  is used to form polymers.

E  forms glucose monomers fromglycogen.

A  shells.

B  atoms.

C  proteins.

D  molecules.

E  bonds.

A  Bacteria

B  Archaea

C  Eukarya

D  Either bacteria or archaea

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

A  organ

B  organelle

C  colony

D  cell

E  tissue

A  disulfide bonds and hydrogen bonds

B  hydrophobic bonds

C  hydrogen bonds and peptide bonds

D  hydrogen bonds

E  van der waals interactions

F  peptide bonds

A  negative feedback.

B  catalytic feedback.

C  bio-informatic regulation.

D  protein-protein interactions.

E  positive feedback.

A  steroid

B  glycosidic

C  peptide

D  hydrogen

E  phosphodiester

A  5

B  1

C  2

D  4

E  3

A  382.31 mmol

B  3.8231 mmol

C  3823.1 mmol

D  38.231 mmol

A  large and round

B  irregular and long

C  smooth and cuboidal

D  long and wide

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

B  the cytosol site where all ribosomal components are produced.

C  an RNA composition.

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

E  ribosomal proteins being produced in the cytosol.

F  composition of two subunits.

A  organism, nervous system, tissue, cell, organ

B  organism, nervous system, nervous tissue, brain

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

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

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

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

B  a decrease in pH.

C  an increase in pH.

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

E  the release of H + into the solution.

A  −OH

B  −COOH

C  −SH

D    

E  −PO 4

F  −NH 2

A  an amphipathic molecule.

B  an ion.

C  salt.

D  oil.

E  a gas.

A  vegetable oil

B  fat that is solid at room temperature.

C  olive oil.

D  butter.

E  beef fat.

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-NH 2

B  R-SH

C  R-CO-R

D  R-OH

E  R-PO 4

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

B  carbon can form hydrogen bonds with water.

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 bonds are stronger than any other bond.