Ch 3 Cells: The Living Units

Question 1

-the cell is the smallest unit of life
-all organisms are made of one or more cells
-cells only arise from other cells

Answer 1

cell theory

Question 2

are the structural units of all living things

Answer 2

cells

Question 3

principle of complementary structure and function

Answer 3

the activities of cells are dictated by their shape and by the relative numbers of the subcellular level they contain

Question 4

fibroblasts, epithelial cells, erythrocytes

Answer 4

cells that form body parts, linings, or transport gases

Question 5

skeletal muscle cell, smooth muscle cells

Answer 5

cells that move organs and body parts

Question 6

fat cells

Answer 6

cells that store nutrients

Question 7

cell that fights disease

Answer 7

macrophage

Question 8

cell that gathers information and controls body function

Answer 8

nerve cell

Question 9

cell of reproduction

Answer 9

sperm

Question 10

the outer boundary of the cell which acts as a selectively permeable barrier

Answer 10

plasma membrane

Question 11

the intracellular fluid packed with organelles, small structures that preform specific cell functions

Answer 11

cytoplasm

Question 12

an organelle that controls the cellular activities. lies near the cells center

Answer 12

nucleus

Question 13

are substances contributing to body mass that are found outside the cells

Answer 13

extracellular materials

Question 14

includes interstitial fluid, blood plasma, and cerebrospinal fluid. l

Answer 14

extracellular fluid (ECF)

Question 15

dissolves and transports substances in the body. Interstitial fluid is like rich nutritious soup. cells need it to stay healthy

Answer 15

extracellular fluid (ECF)

Question 16

include substances aid in digestion (intestinaland gastric fluids, saliva)

Answer 16

cellular secretions

Question 17

is the most abundant extracellular material

Answer 17

extracellular matrix

Question 18

“cell glue” is particularly abundant in connective tissues.

Answer 18

extracellular matrix

Question 19

separates two of the body’s major fluid compartments: intracellular fluid within cells and the extracellular fluid outside the cells

Answer 19

plasma membrane

Question 20

cell membrane is a synonym for

Answer 20

plasma membrane