Plasma Membranes

Question 1

Fluid mosaic model name meaning

Answer 1

Describes the structure of the plasma membrane in which phospholipids and unanchored proteins are free moving (fluidity) and anchored proteins are spread throughout (mosaic).

Question 2

Simple diffusion

Answer 2

Passive movement of small hydrophilic and hydrophobic molecules from a higher concentration to a lower concentration directly through the plasma membrane.

Question 3

Facilitated Diffusion

Answer 3

Hydrophilic molecules passively move down the concentration gradient across the plasma membrane by carrier proteins or protein channels.

Question 4

Osmosis

Answer 4

Diffusion of free water molecules through a semi-permeable membrane from a region of higher concentration of water to a region of a lower concentration of water.

Question 5

Exocytosis

Answer 5

Movement of materials out of a cell with the use of a vesicle. The vesicle fuses with the plasma membrane, and the contents of the vesicle are released out of the cell.

Question 6

Ribosomes

Answer 6

A organelle made of RNA and protein that is the site of translation in protein synthesis.

Question 7

Rough Endoplasmic reticulum

Answer 7

Site of protein synthesis and modification.

Question 8

Golgi apparatus

Answer 8

Organelle in which proteins are assembled and then packaged in vesicles ready for exocytosis.

Question 9

Protein synthesis

Answer 9

The production of a protein through the processes of gene expression.

Question 10

Endocytosis

Answer 10

The process in which a cell consumes a particle or a substance by engulfing it and then forming a vesicle with the plasma membrane, bringing it into the cell.