UNit 2 quiz 1

Question 1

cell theory

Answer 1

1.all things are composed of one or more cells
2.the cell is the simplest unit that can carry out a life process
3.all cells reproduce from other cells

Question 2

prokaryote

Answer 2

smaller than eukaryotes and do not have a nucleus

Question 3

eukaryotes

Answer 3

much larger and more complex, do have a nucleus

Question 4

organelles

Answer 4

parts of a cell, each organelle has a sepcific function

Question 5

what does a plant cell have that an animal cell does not

Answer 5

cell wall and chloroplast

Question 6

cytoplasm

Answer 6

holds things until needed

Question 7

cell membrane

Answer 7

supports the cell and allows things to pass through or not

Question 8

nucleus

Answer 8

contains genetic information and controll cell activity

Question 9

mitochondria

Answer 9

power house of the cell, repsonsible for creating and storing energy, responsible for celluar respiration

Question 10

endoplasmic reticulum

Answer 10

transport materials and helps with thr production and release of hormones

Question 11

golgi bodys

Answer 11

collect and process materials to be removed from the cell

Question 12

cell wall

Answer 12

provides support and protection

Question 13

chloroplast

Answer 13

obsorbes sunlight for photosynthesis

Question 14

asexual reproduction

Answer 14

involves 1 parent and occurs in single cell organisms. offspring is an exact genitic copy of parent

Question 15

sexual reproduction

Answer 15

involves 2 parents and occurs in multi-celluar organisms. offspring is a mix of both parents

Question 16

plant in animla cells need what to live

Answer 16

-energy
-water
-nutrients
-water
-gases

Question 17

diffusion

Answer 17

moving of particles from high to low concentration

Question 18

osmosis

Answer 18

moving of water particles from high to low concentration

Question 19

3 phases of cell divsion

Answer 19

interphase, mitosis and cytokinesis

Question 20

interphase

Answer 20

cell grows and prepares to divide

Question 21

mitosis

Answer 21

consists of 4 phases.
prophase, metaphase, anaphase and telephase

Question 22

prophase

Answer 22

first stage of mitoses, dna stands become compact and chromosones have2 identicle strands held together by a centromere

Question 23

metaphase

Answer 23

second phase of mitosis, chromosones line up in the middle of cell, spindle fibers atatch to sister chromatids at centromere

Question 24

anaphase

Answer 24

third phase of mitosis, centomere splits and sister chromatids separate. dauhter chromasones move to seperate sides of cell

Question 25

telephase

Answer 25

last phase of mitosis, daughter chromosones arrive at seperate ends, then strech out and become thin, spindle fibers break down

Question 26

cytokinesis

Answer 26

last stage of cell division, cytoplasm divides, cell membrane seperates

Question 27

cancer

Answer 27

a change in DNA when cells dont stay in interphase for the right amount of time.

Question 28

tumours

Answer 28

uncontrolled growth of cells

Question 29

benign

Answer 29

cells of the tumour stay together and have no serious effect

Question 30

malignant

Answer 30

mass of cells that interfere with neigboring cells and tissue

Question 31

metastisis

Answer 31

when cancer cells break away and travel to a new part of the body

Question 32

mutations

Answer 32

rnaodm changes in DNA

Question 33

carcinogen

Answer 33

environmental causes of cancer

Question 34

heriditary

Answer 34

some cancers can be genitic

Question 35

specialized cells

Answer 35

cells that have a physical and chemical difference that allow them to perform a specific function

Question 36

examples of specialized cells

Answer 36

muscle cells, red blood cells, bone cells, nerve cells

Question 37

organ system

Answer 37

one or more organs working together to perform

Question 38

organ

Answer 38

2 or more types of tissue working together to perform

Question 39

tissue

Answer 39

collection of similar cells that perfomr a particular but limited function