Lab 2- Cell

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1

Small organs that make up a cell are called

organelle

2

Structural and functional unit of all living things

Cell

3

Cell gave differences that reflect their specific functions in the body,
what functions are in common?

Growing
Reproduction
Responding to a stimulus
Maintaining their boundaries
Metabolize
Digest nutrients
Dipose wastes

4

External boundary of cell,
regulates flow of materials into and out of the cell; site of the cell signaling

Cell membrane or Plasma membrane

5

Scattered thoughout the cell; major site of ATP synthesis

Mitochondria

6

Slender extensions of the plasma membrane that increases its surface area

Microvilli

7

Stored glycogen granules, crystals, pigments and so on.

Inclusions

8

Memranous system consisting of flattened sacs and vesicles; packages proteins for export

Golgi apparatus

9

Control center of the cell; necessary for cell division and cell life

nucleus

10

Two rod shaped bodies near the nucleus; direct formation of mitotic spindles (made of microtubles)

Centrioles

11

Dense, darkly stained nuclear body; package site for ribosomes

Nucleolus

12

Contractile elements of the cytoskeleton

Microfilaments

13

membranous system; involved in intracellular transport of proteins and synthesis of membrane lipids

Rough E R

14

Attached to membrane systems or scattered in the cytoplasm; synthesize proteins

Ribosomes

15

Threadlike structures in the nucleus; contain genetic material, DNA

Chromatin

16

Site of free radical detoxification

Peroxisomes

17

Various sized sacs containing digestive enzymes (acid hydrolases)

Lysosomes

18

A cell's life goes through 2 phases ________ and _____

Interphase and Cell division

19

The longest phase of a cell's life

The phase where cells reproduce

Interphase

Cell Division

20

Cell division consists of a series of events which includes:

Mitosis and Cytokinesis

21

Mitosis is the division of the

Nucleus

22

Cytokinesis is the division of the

Cytoplasm

23

Products of Mitosis

2 identical DIPLOID daughter cells

24

Phases of Mitosis

Prophase
Metaphase
Anaphase
Telophase

and Cytokinesis

25

Importance of mitotic cell division

To make a greater amount of cells for repair and growth.
[while maintaining the same genetic material]

26

The major structural difference between chromatin and chromasomes is that the latter are ________

tightly coiled and condensed

27

Chromosomes attach to the spindle fibers by undivided structures called _____________

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Centromeres

28

If a cell undergoes mitosis but not cytokinesis, the product is ________

Binucleated cell

29

The structure that acts as a scaffolding for chromosomal attachement and movement is called the _____________

Mitotic Spindle

30

_____________ is the phase of cell that don't undergo cell division

Interphase

31

Two cell population in the body that do not under go cell division are _________ and ___________

Skeletal and Cardiac

32

The implication of an inability of a cell population to divide is that when some if its members die, they are replaced by __________

Scar tissue

33

The mitosis phases where:
Chromatin coils and condenses, forming chromosomes

Prophase

34

The Mitosis phase where:
The chromosomes are in V- shape

Anaphase

35

The Mitosis phase where:
the nuclear envelope reforms

Telophase

36

The Mitosis phase where:
Chromosomes line up in the center of the cell along the equator (mid-line)

Metaphase

[along the metaphase plate]

37

The mitosis phase where:
The nuclear envelope fragments and the mitotic spindle forms

Prophase

38

The mitosis phase where:
DNA synthesis occurs, centrioles replicate

Interphase (S phase )

39

The mitosis phase where:
Chromosomes first appear to be duplex structures and chromosomal centromeres are attached to the kinetochore fibers.

Prophase

40

The mitosis phase where:
Cleavage furrow forms

Telophase

41

The two mitotic phases where the nuclear envelope is absent

Metaphase and Anaphase

42

Physical advantage of chromatin coiling and condensing?

Short, compact bodies easier to manipulate during mitosis.
[rather than thin chromatin threads]

43

Chromosomes connected by a small median body called ______ and an adhesive protein called ______.

Centromere

Cohesin

44

Enzyme ______ promotes cleaving of cohesin and the centromere split in Anaphase
[resulting in 2 cromatids]

Separase

45
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47
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48
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49
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Interphase

50
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Early Prophase

51
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Late Prophase

52
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Metaphase

53
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Metaphase

54
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Telophase and Cytokinesis