Unit 10 Quiz Flashcards Preview

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Flashcards in Unit 10 Quiz Deck (41):
1

Cell division

Eukaryotic cells
(somatic cells-non sex cells)

2

Cell cycle

1. Interphase-preparation
2. Mitosis- division of nucleus
3. cytokinesis- division of cytoplasm (begin in anaphase)

3

Interphase

1. G1- cytoplasmic growth
2. S- DNA is replicated
3. G2- extra protein production (protein used in mitosis)

4

Mitosis

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

5

Meiosis

division of gametes (Egg and sperm)

6

Meiosis I

1. Prophase I
2. Metaphase I
3. Anaphase I
4. Telophase I

7

Meiosis II

1. Prophase II
2. Metaphase II
3. Anaphase II
4. Telophase II

8

Dipoid

normal number of chromosomes

9

Haploid

half of normal number of chromosomes

10

Interkinesis

resting period between end of meiosis I and beginning of meiosis II

11

Prophase I

1. synapsing- pair up, intertwine, and wrap around each other
2. crossing over- nonsister chromatids exchange genetic information (ensures genetic diversity)

12

Spermatogensis

46 replicated
23 replicated -Meiosis I
23 single stranded- Meiosis II

13

Oogenesis

unequal cytokinesis

Polar bodies- the three small cells

14

How many nuclear divisions in mitosis?

1

15

How many nuclear divisions in meiosis?

2

16

Mitosis=

one cell creates 2 cells that are genetically identical

17

Meiosis=

one cell creates 4 cells that are genetically diverse/distinct

18

What types of cells divide by mitosis?

somatic body cells

19

What types of cells divide by meiosis?

gametes/ germ cells/ reproductive cells

20

What is the function of asters?

Asters hold the two centrioles in place at the two poles of the cell during cell division

21

What is the function of the kinetochore?

Kinetochores aid in the movement of chromosomes. Spindle microtubules attach to the kinetochores of chromosomes.

22

What is a chiasma?

The points where crossing over occurred on the nonsister chromatids

23

Define the term cytokinesis

the division of the cytoplasm

24

What is a polar body?

the small cell that results from asymmetrical cell division (cytokinesis)

25

During what process is a polar body formed?

meiosis II in oogenesis

26

Define the term crossing over

nonsister chromatids exchange genetic information

27

When during meiosis does crossing over occur?

prophase I

28

oogenesis

Oogenesis is the production of an ovum or egg cell, the female gamete or sex cell.

29

Spermatogenesis

Spermatogenesis is the process of making sperm cells, or developing immature germ cells

30

Mitosis and Meiosis similarities

interphase

31

Mitosis differences

-produces 2 cells
-produces diploid cells
-1 round of division
-genetically identical daughter cells
-used by somatic cells

32

Meiosis differences

-produces 4 cells
-produces haploid cells
-2 rounds of division
-genetically distinct daughter cells
-used by germ cells

33

Under what conditions in an organism would mitosis be used for cellular division?

-growth
-asexual reproduction
-would healing (repair)

34

What cell types perform meiosis?

germ cells

35

How many cells are created at the end of mitosis?

2

36

In males, how many cells are created at the end of meiosis? How many survive?

4
4 survive in human males
1 survives in human females

37

In females, how many cells are created at the end of meiosis? How many survive?

4
4 survive in human males
1 survives in human females

38

G1

growth, replication of organelles

39

S

synthesis (replication) of DNA

40

G2

assembly of spindle beings

41

M

division of nuclear contents