Exam 1 Fast Facts

A  TRUE

B  FALSE

A  All cells in culture must be able to evolve and heLa cells are cultured tumor cells isolated from a cancer patient and used by pharmaceutical companies without permission and cells can grow and reproduce in culture for extended periods.

B  All cells in culture must be able to evolve and cultured cells are not used often by cell biologists.

C  Cultured cells are not used often by cell biologists and cells can grow and reproduce in culture for extended periods.

D  HeLa cells are cultured tumor cells isolated from a cancer patient and used by pharmaceutical companies without permission and cells can grow and reproduce in culture for extended periods.

A  The cell is the structural unit of life

B  All organisms are composed of one or more cells.

C  Cells contain genetic information in the form of RNA that is passed to the next cell generation

D  Cells arise by division of a pre-existing cell

A  They carry a relatively uniform positive charge distribution.

B  They are all the same size.

C  They all have the same degree of hydrophobicity.

D  They carry a relatively uniform negative charge distribution.

E  They are all the same molecular weight.

A  Differential Rotation

B  Differential Centrifugation

A  Natured

B  Denatured

A  between two charged molecules

B  the core of a water-soluble protein

C  between two ions

D  in contact with water molecules

E  on the surface of a water-soluble protein

A  TRUE

B  FALSE

A  protein motifs

B  functional groups

C  domains

D  quaternary structure motifs

A  Both hydrophobic interactions and nonpolar covalent bonds

B  hydrogen bonds

C  van der Waals forces

D  hydrophobic interactions

E  nonpolar covalent bonds

A  Secondary

B  Primary

A  FALSE

B  TRUE

A  They can be found between the two strands of a DNA molecule, occur between most polar molecules and are weak attractive interactions

B  They can occur between most polar molecules.

C  They are weak attractive interactions

D  They can be found between the two strands of a DNA molecule.

A  FALSE

B  TRUE

A  quarternary structure

B  secondary structure

C  tertiary structure

D  primary structure

A  glycolipids

B  proteins

C  triglycerides

D  cholesterol

A  cholesterol, triglycerides and sphingolipids

B  cholesterol, phosphoglycerides and sphingolipids

C  phosphoglycerides, sphingolipids and triglycerides

D  triglycerides, cholesterol and phosphoglycerides

A  FALSE

B  TRUE

A  None of these.

B  Cell lysis

C  Dehydration

D  High blood pressure

A  water

B  glucose

C  water, glucose and Ca2+

D  Ca2+

A  facilitated osmosis

B  osmosis

C  simple diffusion

D  active transport

E  facilitated diffusion

A  increasing temperature

B  increasing length of the hydrocarbon chains

C  the presence of double bonds in fatty acid chains

D  removing cholesterol

A  Via active transport.

B  Via aquaporin channels.

C  Such molecules diffuse freely.

D  Through facilitated diffusion.

A  a sodium ion

B  a large, polar molecule like glucose

C  a small, polar molecule like water

D  a small, nonpolar molecule like oxygen (O2)

A  All of these statements are correct

B  It is oriented with the small hydroxyl group embedded in the lipid bilayer and the remainder of the molecule toward the membrane surface.

C  It interferes with the movements of the fatty acid tails of the phospholipids.

D  It makes the cell membrane fluid at room temperature.

A  hypertonic to Paramecium

B  isotonic to Paramecium

C  hypotonic to Paramecium

D  None of these statements is correct