Cell division biol

Question 1

What is binary fission? IN PROKARYOTS

Answer 1

Dna gets copied and divided then new cell wall is formed and created 2 identical cells

Question 2

Do unicellular eukaryotes have the same division as bacterial cells?

Answer 2

yes

Question 3

do multicellular eukaryotes have the same division as bacterial cells?

Answer 3

no

Question 4

What steps are there in the cell cycle for eukaryotes?

Answer 4

1. mitotic phase
   -1st mitosis (division of nucleus)
   -2ndcytokinesis (division of cytoplasm)
2. interphase
   -G1 cell growth
   -S period Synthesis of DNA
   -G2 cell growth and prep for mitosis

Question 5

How many phases in mitosis?

Answer 5

5
prophase
prometaphase
metaphase
anaphase
telophase

Question 6

What happens in prophase?

Answer 6

Pair or centrosomes appear in the cell, chromatids condense and spindles start to form

Question 7

What happens in prometaphase?

Answer 7

nucleus breaks apart and pulls the chromatids to opposing sides of cell

Question 8

what happens in metaphase?

Answer 8

Centromeres at opposite poles, the chromosomes are arranged in the middle at the metaphase plate.

Question 9

What happens in anaphase?

Answer 9

chromatids are pulled apart and cell elongates

Question 10

what happens in telophase?

Answer 10

2 nuclei are built, cytokinesis pinches the cell(cleavage furrow) to create 2 diploid cells identical

Question 11

are cells produced by meiosis haploid or diploid/? AND HOW MANY?

Answer 11

4 haploid cells

Question 12

What does haploid and diploid mean?

Answer 12

haploid =1n = 23 chromosomes
diploid=2n=46 chromosomes

Question 13

Meiosis 1 has how many phases and what are they?

Answer 13

Prophase 1
metaphase 1
anaphase 1
telophase 1

Question 14

What happens in prophase 1?

Answer 14

homoplogous chromosome duplicate and cross over to create chromosomes with each other dna combined, nucleus comes apart and spindle forms

Question 15

what happens in metaphase 1?

Answer 15

chromosomes line up at metaphase plate

Question 16

what happens in anaphase 1?

Answer 16

homologues get pulled apart but sister chromatids remain together

Question 17

what happens in telophase 1?

Answer 17

nuclear membrane forms and splits into 2 haploid cells

Question 18

what are the phases in meiosis 2?

Answer 18

Prophase 2
metaphase 2
anaphase 2
telophase 2

Question 19

What happens in prophase 2?

Answer 19

spindle forms

Question 20

what happens in metaphase 2?

Answer 20

chromosomes allign at metaphase plate

Question 21

anaphase 2 what happens?

Answer 21

SISTER CHROMATIDS ARE PULLED APART

Question 22

what happens in telophase 2?

Answer 22

nuclei form and splitinto two more haploid cells

Question 23

how many haploid cells final?

Answer 23

4

Question 24

are the cells different?

Answer 24

yes because they combined they all have different genetic information