Unit 5 Test

Question 1

During which phase of Mitosis are chromatids separated?

Answer 1

anaphase

Question 2

What happens to cells during differentiation?

Answer 2

the cells lose the potential to develop into any type of cell

Question 3

What process results in cells losing their ability to become any type of cell

Answer 3

differentiation

Question 4

stem cells

Answer 4

cells in the body that can divide repeatedly and become other types of cells

Question 5

division of the cytoplasm

Answer 5

cytokinesis

Question 6

division of the nucleus

Answer 6

mitosis

Question 7

ectoderm

Answer 7

outer layer of the skin

Question 8

endoderm

Answer 8

middle layer of the skin

Question 9

mesoderm

Answer 9

bottom layer that forms muscles

Question 10

binary fission

Answer 10

no nucleus or organelles- just a single loop of DNA

Question 11

vegetative reproduction

Answer 11

plants reproduce from roots and top of stem

Question 12

hydra budding

Answer 12

a new organism develops from an outgrowth or bud due to cell division at one particular site

Question 13

fragmentation

Answer 13

an organism is split into fragments upon maturation and the spilted part becomes the new individual

Question 14

mitotic reproduction

Answer 14

asexual reproduction in Eukaryotes EX: hydra budding, fragmentation, vegetative

Question 15

Asexual reproduction

Answer 15

1 parent, identical to parent, faster then sexual

Question 16

sexual reproduction

Answer 16

2 parents, joining of gametes, increases genetic diversity

Question 17

the chromosomes are attached at this point

Answer 17

centromere

Question 18

chromosome during interphase (relaxed)

Answer 18

chromatin

Question 19

these produce spindle fibers

Answer 19

centrioles

Question 20

the stage when centrioles migrate

Answer 20

prophase

Question 21

the stage where the chromosomes line up in the middle

Answer 21

metaphase

Question 22

the stage where the cell splits into 2 daughter cells

Answer 22

cytokinesis

Question 23

the stage where the nuclear envelope reappears

Answer 23

telophase

Question 24

the stage where the nuclear envelope disappears

Answer 24

prophase

Question 25

stages of the cell cycle

Answer 25

interphase, mitosis, cytokinesis

Question 26

stages of interphase

Answer 26

G1, S, G2

Question 27

Gap 1 (G1)

Answer 27

growth of the cell

Question 28

Synthesis (S)

Answer 28

DNA is copied and replicated

Question 29

Gap 2 (G2)

Answer 29

Growth of the organelles

Question 30

the primary purpose of interphase

Answer 30

to grow the cell

Question 31

what are the things that are controlling the cell cycle?

Answer 31

cyclin-dependent kinases, hormones, and enzymes

Question 32

3 parts of a DNA molecule

Answer 32

phosphates, sugars, and nitrogenous base

Question 33

What must be perfectly divided during mitosis to have the correct DNA

Answer 33

the chromosomes

Question 34

stages of mitosis

Answer 34

prophase, metaphase, anaphase, telophase

Question 35

when do chromosomes form

Answer 35

prophase

Question 36

what do chromosomes form from

Answer 36

chromatin

Question 37

what structure disappears during mitosis

Answer 37

the nuclear membrane

Question 38

How is cytokinesis different in plant and animal cells?

Answer 38

animal- the cell membrane is pinched, leaving 2separate daughter cells
plant- cell wall develops between the 2 nuclei

Question 39

what happens to the chromosome in anaphase

Answer 39

the spindle fibers contract and pull the chromosomes apart