Exam 1 Fast Facts

A  FALSE

B  TRUE

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  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.

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

A  Cells arise by division of a pre-existing cell

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

C  All organisms are composed of one or more cells.

D  The cell is the structural unit of life

A  They all have the same degree of hydrophobicity.

B  They are all the same size.

C  They carry a relatively uniform negative charge distribution.

D  They carry a relatively uniform positive charge distribution.

E  They are all the same molecular weight.

A  Differential Centrifugation

B  Differential Rotation

A  Denatured

B  Natured

A  the core of a water-soluble protein

B  between two ions

C  on the surface of a water-soluble protein

D  between two charged molecules

E  in contact with water molecules

A  TRUE

B  FALSE

A  protein motifs

B  quaternary structure motifs

C  domains

D  functional groups

A  Both hydrophobic interactions and nonpolar covalent bonds

B  van der Waals forces

C  nonpolar covalent bonds

D  hydrophobic interactions

E  hydrogen bonds

A  Primary

B  Secondary

A  TRUE

B  FALSE

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

B  They are weak attractive interactions

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

D  They can occur between most polar molecules.

A  TRUE

B  FALSE

A  primary structure

B  quarternary structure

C  secondary structure

D  tertiary structure

A  glycolipids

B  triglycerides

C  proteins

D  cholesterol

A  cholesterol, triglycerides and sphingolipids

B  phosphoglycerides, sphingolipids and triglycerides

C  cholesterol, phosphoglycerides and sphingolipids

D  triglycerides, cholesterol and phosphoglycerides

A  FALSE

B  TRUE

A  Cell lysis

B  None of these.

C  Dehydration

D  High blood pressure

A  water, glucose and Ca2+

B  Ca2+

C  water

D  glucose

A  active transport

B  facilitated osmosis

C  osmosis

D  facilitated diffusion

E  simple diffusion

A  the presence of double bonds in fatty acid chains

B  increasing temperature

C  increasing length of the hydrocarbon chains

D  removing cholesterol

A  Via active transport.

B  Via aquaporin channels.

C  Through facilitated diffusion.

D  Such molecules diffuse freely.

A  a sodium ion

B  a small, polar molecule like water

C  a large, polar molecule like glucose

D  a small, nonpolar molecule like oxygen (O2)

A  It makes the cell membrane fluid at room temperature.

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  All of these statements are correct

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

A  isotonic to Paramecium

B  hypotonic to Paramecium

C  hypertonic to Paramecium

D  None of these statements is correct