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Flashcards in Chapter 3 Test Deck (34):
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Passive mechanisms

1

Process of molecules movies from an area of great concentration to an area of lower concentration

Diffusion

2

The difference between the concentrations

Concentration gradient

3

Diffusion continues until ___________ is reached

Equilibrium

4

Diffusion can only occur is:

-the cell membrane is permeable to that substance.

- there must be a concentration gradient

5

Specialized structure within the cells

Organelles

6

CELL FUNCTION:

Regulates the movement of substances into and out of cell

Cell or plasma membrane

7

CELL FUNCTION:

System of tubules that transport lipids and proteins

Endoplasmic reticulum

8

CELL FUNCTION:

Synthesize proteins; "protein factories"

Ribosomes

9

CELL FUNCTION:

Modifies proteins into glycoproteins for secretion

Golgi apparatus

10

CELL FUNCTION:

Contains enzymes that cause chemical reactions to release energy from nutrients; provide energy

Mitochondria

11

CELL FUNCTION:

contain digestive enzymes that can digest the cell from the inside; decompose worn out cell parts and excess substances

Lysosomes

12

CELL FUNCTION:

Contain enzymes that are catalysts for liver and kidney functions

Peroxisomes

13

CELL FUNCTION:

Forms the cell Skeleton and aid in transport of substances within the cell cilia; hairlike extensions that aid in movement

Microfilments and microtubules

14

CELL FUNCTION:

Whiplike extension that aids in movement of the cell

Flagellum

15

CELL FUNCTION:

Produces the ribosomes

Nucleolus

16

CELL FUNCTION:

Contains chromosomes (DNA) and functions in cellular reproduction; function in production of proteins

Chromatin

17

Dissolving medium; typically water in the body

Solvent

18

Neoplasm and cytosol

Intercellular fluid

19

Fluid on the exterior of the cell

Interstitial fluid

20

Describe interphase:

- cell grows
- cell carries on metabolic processes

21

What happens in mitosis-

- cell division
- cell replicates itself

22

Dividing of the cytoplasm

Cytokinesis

23

Uses diffusion to separate small molecules from large ones in a liquid

Dialysis

24

Molecules are unable to pass through the membrane alone and must have a carrier molecule

Facilitated

25

TYPES OF SOLUTIONS:

The concentration of solutes inside the cells is the same as the concentration outside the cell. (Cell stats the same size)

Isotonic solution

26

TYPES OF SOLUTIONS:

The concentration of solutes outside the cell is greater than the concentration inside the cell. (Cell will shrink because water will move out of cell)

Hypertonic solutions

27

TYPES OF SOLUTIONS:

The concentration of solutes outside the cell is lower than the concentration inside the cell. (Cell will swell bc water will move into it)

Hypotonic solution

28

Time between cell divisions

Interphase

29

Prophase-

-sister chromatids are held together by centromere
- nuclear membrane disappears
- nucleoli a disappears
- centrioles separate and move to opposite ends of the cell
-spindle begins to form

30

Metaphase

- Sister chromatids with the centromeres are attached to the spindle fibers
- the chromatids line up along the equator of the cell

31

Anaphase

- separation of chromosomes with sister chromatids moving to opposite ends of the cell

32

Telophase

-spindle breaks down
-nucleolus reappears
-chromosomes coil
-a nucleus forms at each end
- cell membrane pinches dividing the cytoplasm (cytokinesis)

33

What is the function of mitosis?

function: is to produce more cells for growth and repair process