Mitosis

Question 1

chromatin

Answer 1

unwound DNA

Question 2

chromosome

Answer 2

tightly packed DNA found only during cell division

Question 3

chromatids

Answer 3

each of 2 thread-like strands into which a chromosome divides during mitosis

Question 4

sister chromatids

Answer 4

2 identical copies of a chromatid

Question 5

centromere

Answer 5

a structure in a chromosome that holds the two chromatids together

Question 6

spindle fibers

Answer 6

control the movement and separation of chromosomes during mitosis

Question 7

centriole

Answer 7

helps in the formation of spindle fibers

Question 8

nucleaur envelope

Answer 8

a membrane that separates the nucleus from the cytoplasm in eukaryotic cells

Question 9

what happens in interphase

Answer 9

Chromatin is unwound
Here the cell grows in preparation for cell division.
Note the position of the centrioles.

Question 10

what happens in prophase

Answer 10

Chromosomes become visible through a microscope.
Spindles begin to form.
Nuclear membrane disappears.
Centrioles begin moving toward the poles.
The chromosomes replicate and are seen as a pair of sister chromatids.

Question 11

what happens in metaphase

Answer 11

he chromosomes, guided by the spindle fibers, line up in the middle of the dividing cell.
The centrosomes are at opposite ends (poles) of the cell.

Question 12

centrosome

Answer 12

an organelle near the nucleus of a cell that contains the centrioles (in animal cells) and from which the spindle fibers develop in cell division.

Question 13

what happens in anaphase

Answer 13

The two sister chromatids of each chromosome are pulled apart by the spindle fibers.
Chromosomes move away from each other toward the poles.

Question 14

what happensi n telophase

Answer 14

the chromosomes have reached the poles.
Two new nuclear membranes form around each of the two separated sets of chromosomes.

Question 15

what happens during cytokensis

Answer 15

he cell has divided into two daughter cells exactly like the parent cell

Question 16

What are the order of the phases in mitosis

Answer 16

(interphase) phrophase,metaphase,anaphase,telophase,cytokensis.

Question 17

What are the foru phases of the cell cycle

Answer 17

G1,S,G2,M

Question 18

What happens in the G1 phase and how long does it take.

Answer 18

Period of cell growth and 10 hours.

Question 19

what happens is the s phase and how long does it take

Answer 19

DNA copies itself and 8 hours.

Question 20

what happens in the G2 phase and how long does it take

Answer 20

cell prepares for cell division and 5 hours

Question 21

What happens in the M phase

Answer 21

mitosis occurs and 1 hour

Question 22

what phases of the cell cycle are part of interphase?

Answer 22

g1,s,g2

Question 23

When does the nuclear membrane start to disapear.

Answer 23

prophase

Question 24

when is the nuclear membrane completely gone.

Answer 24

metaphase

Question 25

When does the DNA duplicate

Answer 25

interphase

Question 26

mitosis

Answer 26

the separation of the nucleus to create 2 identical nuclei.

Question 27

Sexual reproduction

Answer 27

the production of an off spring with 2 parents,

Question 28

asexual reproduction.

Answer 28

the production of an offspring only including one parent,

Question 29

fission

Answer 29

a single cell splits into 2 cells (only in prokaryotic cells/bacteria.

Question 30

budding

Answer 30

offspring grows off a organism

Question 31

gene

Answer 31

a sequence of nitrogen bases that codes for the synthesis of one protein .instructions for making proteins

Question 32

mRNA

Answer 32

messenger RNA.Transcribes DNA instruction and brings the info to the ribosomes.

Question 33

tRNA

Answer 33

translates the coded instructions and brings certain amino acids to the chromosomes.

Question 34

amino acids

Answer 34

found throughout genetic code and brought to the ribosomes to create proteins.

Question 35

synthesis.

Answer 35

the process of combining two or more things

Question 36

dehydration synthesis

Answer 36

connecting of amino acids to create protiens.

Question 37

transcription

Answer 37

change form of DNA writing

Question 38

translation

Answer 38

makes amino acids into protiens

Question 39

regeneration

Answer 39

a piece of an organism is used to produce an offspring.

Question 40

spore formation

Answer 40

an organism releases specialized cells called spores.If they land in a favorable sport they will develop into offspring (mold)

Question 41

vegative propogation

Answer 41

a piece of a plant cutting is used to produce another plant.

Question 42

gamete

Answer 42

sex cell

Question 43

sperm

Answer 43

fertilizes the egg to create a zygote.

Question 44

egg

Answer 44

helps the fertilization process to create a zygote.

Question 45

meiosis

Answer 45

a form of cell divison where the cell doesn't go through interphase therefore the daughter cell created only get half the DNA from the parent cell.

Question 46

zygote

Answer 46

a diploid cell produced after fertilization

Question 47

haploid

Answer 47

one set of chromosomes

Question 48

diploid

Answer 48

a cell that contains 2 sets of chromosomes from each parent.

Question 49

DNA

Answer 49

the master copy of genetic instruction for making protiens. contains genes.

Question 50

What are the results of mitosis

Answer 50

2 daughter cells

Question 51

what is the francus watson and crick model.

Answer 51

DNA strands