Cell in its environment

Question 1

selectively permeable membrane

Answer 1

membrane that only allows certain materials cross it though pores, separates the cell from surrounding area

Question 2

diffusion

Answer 2

movement of molecules from an area in which they are highly concentrated to an area in which they are less concentrated

Question 3

osmosis

Answer 3

diffusion of water across a selectively permeable membrane

Question 4

if water is moving from high to low then it is going from a..

Answer 4

dilute solution to a concentrated solution

Question 5

what is passive transport

Answer 5

movement of materials without use of energy like diffusion or osmosis

Question 6

homeostasis

Answer 6

a stable internal environment

• oxygen/carbon dioxide exchange
• bring in nutrients
• get rid of wastes

Question 7

active transport

Answer 7

the movement of molecules though a membrane using energy, usually from low to high or because particles are too big

Question 8

name two types of active transport

Answer 8

exocytosis-moving out

endocytosis-moving in

Question 9

explain exocytosis

Answer 9

1. ) materials transported to inside side of cell in vesicle
2. ) membrane and vesicle join together
3. ) create opening for particles to leave

Question 10

explain endocytosis

Answer 10

1. ) membrane extends around particle that is taken in
2. ) membrane creates a vesicle around particle
3. ) vesicle moves freely

Question 11

transport proteins

Answer 11

in the cell membrane, require energy to work, pump particles in or out of the cell from low to high concentrations

Question 12

photosynthesis

Answer 12

process of using sun’s energy to create glucose and oxygen,

Question 13

photosynthesis takes place in

Answer 13

chloroplasts

Question 14

equation for photosynthesis

words

Answer 14

sun+carbon dioxide+water=glucose+oxygen

Question 15

equation for photosynthesis

actual

Answer 15

sun+6COtwo+6Htwo0=CsixHtwelve0six+6Otwo

Question 16

cellular respiration

Answer 16

process of turning glucose and water into ATP (energy), carbon dioxide, water

Question 17

cellular respiration takes place in

Answer 17

mitochondria

Question 18

equation for cellular respiration

words

Answer 18

glucose+oxygen=carbon dioxide+water+ATP

Question 19

equation for cellular respiration

actual

Answer 19

CsixHtwelve0six+6Otwo=6COtwo+6Htwo0+ATP

Question 20

photosynthesis and cellular respiration are

Answer 20

OPPOSITES, what one creates, the other breaks down

Question 21

how to animal cells get glucose since they don’t do photosynthesis

Answer 21

they get it from food which can always be traced to a plant which does photosynthesis to get glucose

Question 22

cell cycle

Answer 22

the sequence of growth that cells undergo

Question 23

interphase

Answer 23

first stage of cell cycle, period before cell division, cell copies DNA

Question 24

mitosis

Answer 24

the stage when the cell’s nucleus divides into two nuclei, has four parts

Question 25

prophase

Answer 25

first phase in mitosis, chromatin condenses into chromosomes, centrioles and spindle fibers appear

Question 26

metaphase

Answer 26

2nd phase in mitosis, chromosomes line up in the middle and attach to spindle fibers

Question 27

anaphase

Answer 27

3rd phase in mitosis, centromeres split and move to either sides of cell

Question 28

telophase

Answer 28

4th phase in mitosis, nuclear membrane forms, cell begins to split

Question 29

cytokinesis

Answer 29

after mitosis, cell membrane splits and now there are two daughter cells, chromatids condense into chromatin

Question 30

chromatin

Answer 30

stringy like fibers in interphase and cytokinesis

Question 31

chromatid

Answer 31

when the chromatin condenses, in anaphase, telophase, and part of interphase

Question 32

chromosome

Answer 32

to sister chromatids that are connected, in prophase, and metaphase

Question 33

centromere

Answer 33

the thing that connects the sister chromatics (chromosomes)

Question 34

centriole

Answer 34

the block that is at either end of the cell during metaphase and anaphase that holds the spindle fiber

Question 35

spindle fiber

Answer 35

the long strand that stretches across the cell in metaphase and anaphase

Question 36

list the cell cycle in order

Answer 36

interphase (mitosis) prophase metaphase anaphase telophase (end mitosis) cytokinesis