Cells

Question 1

Cells

Answer 1

Smallest unit of life.
All organisms are made of cells.
Activities of cells depend on their shapes and subcellular structures.
Cells arise from other cells.
Over 250 different cell types.

Question 2

Plasma Membrane

Answer 2

selectively permeable barrier, Phospholipid bilayer with protein molecules plugged in as a fluid mosaic

Question 3

Cytoplasm

Answer 3

intracellular fluid packed
with organelles

Question 4

Nucleus

Answer 4

organelle that controls
cellular activities

Question 5

ECF (extracellular fluid)

Answer 5

includes interstitial fluids, blood plasma,
cerebrospinal fluid (CSF)

Question 6

Cellular secretions

Answer 6

substances that aid in digestion (gastric fluids) or act as
lubricants (saliva)

Question 7

Extracellular matrix (ECM)

Answer 7

most abundant material, jellylike substance
composed of proteins and polysaccharides

Question 8

Membrane Lipids

Answer 8

forms the fabric of the membrane (phospholipid +
cholesterol)

Question 9

Membrane Proteins

Answer 9

allows the membrane to communicate with its
environment, responsible for specialized membrane function

Question 10

Membrane Carbohydrates

Answer 10

includes glycoproteins and glycolipids.
Glycocalyx (carbohydrate rich area) provides identity molecules for specific biologicals markers.

Question 11

Cell Junctions

Answer 11

allow neighboring cells to adhere and to communicate,
inhibit or aid in allowing movement of molecules between cells