Cells

Question 0

Peripheral

Answer 0

Not embedded in the lipid bilayer, weakly bound to the surface if a membrane, a protein

Question 1

The orientation if membrane proteins

Answer 1

Peripheral and integral

Question 2

Integral

Answer 2

Attached to the plasma membrane permanently or anchored in

Question 3

Transport a membrane protein

Answer 3

Left- provides hydrophilic channel that is across the membrane.
Right- moves a substance by changing the shape from one side to the other

Question 4

Enzymatic activity of the membrane proteins

Answer 4

A protein that is built into the membrane. May be an enzyme with it’s active site exposed to substances in the adjacent solution

Question 5

ECM attachment to the cytoskeleton and extracellular matrix

Answer 5

Helps maintain the cells shape and secures the proteins in their locations. Made up of micro filaments and other elements.

Question 6

Cell- cell recognition-

Answer 6

Identification tags, for membrane proteins and other cells. Made up if glycoproteins.

Question 7

Intercellular joining

Answer 7

Join together in different ways or types of junctions: gap junctions or tight junctions

Question 8

Signal transduction

Answer 8

Binds with a specific shape, the shape can fit the shape if a chemical messenger. The protein may change so it can relay the message inside the cell

Question 9

What membrane structures are important for cell-cell recognition?

Answer 9

Carbohydrates: glycolipids, glysoproteins

Question 10

Which molecules easily cross the membrane?

Answer 10

Nonpolar: hydrocarbons and carbon dioxide

Question 11

How are molecules transported that do not easily cross the membrane:

Answer 11

Through a process called active transport

Question 12

Diffusion

Answer 12

The random thermal motion of particle of liquids, gases, or solids

Question 13

Osmosis

Answer 13

The diffusion of free water molecules across a selectively permeable membrane

Question 14

Hypotonic

Answer 14

The cell will lose water in a solution

Question 15

Hypertonic

Answer 15

The cell will absorb water when in solution

Question 16

Isotonic

Answer 16

No reaction

Question 17

Active transport:

Answer 17

Moves molecules up the concentration gradient

Question 18

Passive transport

Answer 18

Moves molecules down the concentration gradient

Question 19

Exocytosis

Answer 19

When bilingual molecules come out of the cell

Question 20

Endocytosis

Answer 20

When the molecules go in the cell

Question 21

Selectively permeable membrane

Answer 21

A property of biological membranes that allows them to regulate the passage of substances across them

Question 22

Facilitated diffusion

Answer 22

Across the biological membrane with assistance of transmembrane transport proteins

Question 23

Exoytosis

Answer 23

The cellular secretion of biological molecules by the fusion of vesicles containing then with the plasma membrane

Question 24

Endocytosis

Answer 24

Cellular uptake of biological molecules and particulate matter via formation of vesticle form the plasma membrane

Question 25

Phagocytosis

Answer 25

Edit endocytosis: large substances or small organisms are taken up by a cell

Question 26

Pinocytosis

Answer 26

A type of endocytosis in which the cell ingests the extracellular fluids and it's dissolved solutes