3.1 Cells

Question 1

the basic structural and functional unit of living organisms

Answer 1

Cell

Question 2

outer membrane of the cell; acts as a selective barrier

Answer 2

Plasma membrane

Question 3

intracellular fluid packed with organelles

Answer 3

Cytoplasm

Question 4

small structures that perform specific cell functions

Answer 4

Organelles

Question 5

organelle that controls cellular activities; usually near the center

Answer 5

Nucleus

Question 6

What are the 3 parts of a human cell?

Answer 6

Plasma membrane, cytoplasm, and nucleus

Question 7

substances contributing to body mass that are found outside the cells

Answer 7

Extracellular materials

Question 8

important transport and dissolving media

ex. interstitial fluid (fluid between the cells), blood plasma, and cerebrospinal fluid

Answer 8

Body fluids/extracellular fluids

Question 9

substances that aid in digestion (ex. intestinal and gastric fluids) and act as lubricants (ex. saliva, mucus, serous fluids)

Answer 9

Cellular secretions

Question 10

secreted by the cells, these molecules self-assemble into organized mesh and serve as “cell glue” to hold body cells together; abundant in cell tissues

Answer 10

Extracellular matrix