Test 2

Question 1

Mitoses

Answer 1

nuclear division that makes two daughter cells with same amount of chromosomes. Regular cells

Question 2

Meiosis

Answer 2

Nuclear division that generates gametes containing half number of chromosomes

Question 3

Diploid

Answer 3

46 chromosomes. 2 copies

Question 4

Haploid

Answer 4

Sex cells. 23 chromosomes. half chromosomes

Question 5

Gametes are

Answer 5

Haploids

Question 6

Zygotes are

Answer 6

diploids

Question 7

Metacentric chromosomes

Answer 7

Centromere is in the middle

Question 8

aerocentric chromosomes

Answer 8

centromere is near one end

Question 9

Homologous chromosomes

Answer 9

Chromosomes that match

Question 10

Karyotype

Answer 10

micrograph of stained chromosomes arranged in homologous pairs.

Question 11

Sex Chromosomes

Answer 11

unpaired X and Y chromosome

Question 12

Autosomes

Answer 12

All chromosomes exept for X and Y

Question 13

Cell cycle consists of

Answer 13

Interphase, mitoses and cytokineseis

Question 14

Interphase 3 parts

Answer 14

G1
S
G2

Question 15

G1 phase

Answer 15

Period of cell growth.

Question 16

Go phase

Answer 16

cells stop dividing and are at rest

Question 17

S Phase

Answer 17

duplication of chromosomes into sister chromosomes

Question 18

G2 phase

Answer 18

synthesis of proteins required for mitosis

Question 19

centrosome

Answer 19

microtubule organizing center near the nuclear envelope

Question 20

centrioles

Answer 20

core of centrosome, not found in plant cells

Question 21

5 stages of mitosis

Answer 21

Prophase, Prometaphase, metaphase, Anaphase, Telophase .

Question 22

Prophase

Answer 22

chromosomes condense, centrosomes move apart, nucleoli disappear

Question 23

Prometaphase

Answer 23

Spindle forms, micro tubules connect to kinetochores. Sister chromatids attach from opposite poles.

Question 24

Metaphase

Answer 24

Chromosomes align on the metaphase plate (middle)

Question 25

Anaphase

Answer 25

Chromosomes divide

Question 26

Telophase

Answer 26

Nuclear envelope forms around each group of chromatids

Question 27

Cytokinesis

Answer 27

final stage of cell division.

Question 28

Contractile

Answer 28

Animals have it.

Question 29

Cell Plate

Answer 29

Plants

Question 30

Somatic cells

Answer 30

most cells in the organism

Question 31

Germ Cells

Answer 31

Sex cells. Haploids

Question 32

Meiosis

Answer 32

Two rounds o meiosis, Chromosomes duplicate once, Nuclei divide twice

Question 33

Meiosis 1

Answer 33

reductional division

Question 34

Meiosis II

Answer 34

equational division

Question 35

Nondisjunction

Answer 35

mistakes in chromosome segregation during meiosis. Can make mutations like retardation.

Question 36

Germ line

Answer 36

specialized diploid cells set aside during embryogenesis

Question 37

gametogenesis

Answer 37

the formation of gametes

Question 38

Oogonia

Answer 38

Diploid germ cells in ovaries of female embryos