ch 8 mitosis p3

Question 1

mitosis

the type of cell division by which a single cell divides in such a way as to produce two genetically identical “daughter cells”.
نوع الانقسام الخلوي الذي تنقسم به خلية واحدة بطريقة تنتج “خليتين وليدتين” متطابقتين وراثيا.

Answer 1

Generation of new, genetically identical cells

Question 2

before mitosis begin(interphase)
DNA replicate and now chromosome consist of ________

Answer 2

2 chromatid

Question 3

chromosome during all cell cycle except __________

Answer 3

mitosis

Question 4

after replicate DNA each chromosome appears as two identical linear DNA molecules held togather at the centromere is ________and two of it called ___________

sant rimeeera

centromere

Answer 4

chromatid
sister chromatid

Question 5

mitosis characteristic :

Answer 5

-produce genetically
-cell division
-chromosome number does not change
Cells are diploid (2n) : 2 copies of each chromosome
-nuclear divison
- create duplicate

doop lic it =تكرار

dup li cate

Question 6

mitosis phases :

Answer 6

-prophase
-metaphase
-anaphase
-telophase

Question 7

what happend in interphase :

Answer 7

G1 Phase: This is the period before the synthesis of DNA.
S Phase: This is the phase during which DNA synthesis takes place.
G2 Phase: This is the phase between the end of DNA synthesis and the beginning of the prophase.

Question 8

what happend in prophase :

Answer 8

1-chromosome begin to condense
2-nuclear envelope break down
3-spindle form
4-centrosome move to opposite poles
1- يبدأ الكروموسوم بالتكاثف
2- انهيار الغلاف النووي
3-شكل المغزل
4-تحرك الجسيم المركزي إلى القطبين المتقابلين

kin dans/N villip/spin dill/santro sohm/

con/ dense /en ve lope/spindle/centrosome

Question 9

what happened in metaphase

Answer 9

1-Centrosomes are at opposite poles
2-chromosome line up in the middle of the cell and along the metaphase plate or cell equator
1- تكون الجسيمات المركزية على قطبين متقابلين
2- يصطف الكروموسوم في منتصف الخلية وعلى طول الصفيحة الطورية أو خط استواء الخلية

aak way tir =خط الاستواء

equ ator

Question 10

what happen in anaphase :

Answer 10

Sister chromatids are pulled to opposite ends of the cell as the
microtubule shorten
يتم سحب الكروماتيدات الشقيقة إلى طرفي نقيض من الخلية مثل
تقصير الأنابيب الدقيقة

Question 11

what happens in telophase :

Answer 11

1-Chromosomes begin to uncoil
2-spindle breaks down
3-Nuclear envelope begins to form around each set of chromosomes
4-cytokinesis begin
5-nucleolus reapear
تبدأ الكروموسومات بالتفكك
ينهار المغزل مرة أخرى
يبدأ الغلاف النووي بالتشكل حول كل مجموعة من الكروموسومات
يبدأ التحريك الخلوي

un coy ill/ cyto kn e sis/nook lee yil s

un coil=straight/ cyto kin esis

Question 12

physical seperation of cytoplams

Answer 12

cytokinesis

Question 13

what would cytokinesis do to animal and plant cell :

Answer 13

animal cell : cleavage
plant cell : cell plate

klee vij /foh roh/

cleavage / furrow/ انشقاق

Question 14

Mitosis :

Answer 14

Produces 2 genetically identical daughter cells
Follows chromosome duplication
4 phases
Each new cell gets an exact copy of the DNA
Process used by cells to grow and to replace old cells that have died

Question 15

somatic cell that completed Cell division without cytokinesis would have ____________

Answer 15

two nuclei and twice the DNA compared to the onset of Division

Question 16

Mitosis without cytokinesis results in a cell with____________

Answer 16

more than one nucleus but a connected cytoplasm