AP Biology Unit 7 Vocabulary

Who's work concluded that the %A=%T  and %G=%C

• Chargaff

• Meischer

• Levene

• Hammerling

DNA replication was proved by the experiments of:

• Hershey & Chase

• Meselson & Stahl

• Watson & Crick

• Franklin & Gosling

The enzyme that removes RNA Primers and fills in the gaps with DNA Nucleotides is

• DNA Polymerase III

• DNA Polymerase I

• DNA Polymerase II

• Primase

Which enzyme proofreads and removes RNA Primase

• Ligase

• Polymerase 1

• Polymerase 3

• Helicase

Which of the following statements about diffusion is true?

• It is very rapid of long distances.

• It requires an expenditure of energy by the cell.

• It is an active process in which molecules move from a region of lower concentration to a region of higher concentration.

• It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.

_______ regulates what enters and leaves a cell.  

• Cell Membrane

• Nucleus

• Mitochondria

• Cytoplasm

Tags

NGSS.MS-LS1-2

White blood cells engulf bacteria using _______________.

• phagocytosis

• pinocytosis

• osmosis

• receptor-mediated exocytosis

According to the fluid mosaic model of cell membranes, phospholipids___________________.

• can shift laterally along the plane of the membranee

• frequently flip-flop from one side of the membrane to the other

• occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane

• have hydrophilic tails in the interior of the membrane

Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?

• transmembrane proteins

• integral membrane proteins

• peripheral proteins

• cholesterol

In what way do the membranes of a eukaryotic cell vary?

• Phospholipids are found only in certain membranes

• Certain proteins are unique to each membrane

• Only certain membranes of the cell are selectively permeable

• Some membranes have hydrophobic surfaces exposed to the cytoplasm while others have hydrophilic surfaces facing the cytoplasm.