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CELL BIOLOGY > LFS100 Quiz 2 > Flashcards

LFS100 Quiz 2 Flashcards

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AP® Biology flashcards
1
Q

How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was in G1 of the cell cycle?

A

The daughter cells have the same number of chromosomes and the same amount of DNA.

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2
Q

A particular cell has half as much DNA as some of the other cells in a mitotically active tissue. The cell in question is most likely in

A

G1.

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3
Q

The MPF protein complex turns itself off by

A

activating a process that destroys cyclin.

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4
Q

The primary animal tissue associated with covering and lining is

A

epithelial

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5
Q

The tissue that always has a free surface exposed to the internal or external environment is

A

epithelial tissue.

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6
Q

Cartilage heals poorly and in many instances does not heal or recover at all after a severe injury, because cartilage is

A

avascular

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7
Q

Smooth muscle is an involuntary muscle tissue.

A

True

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8
Q

The numerous cellular extensions which branch off the neuronal cell body are termed?

A

dendrites

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9
Q

_______are mature cells without protoplasts with thick, lignified secondary walls that may or may not function in transport

A

sclerenchyma

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10
Q

The best word to describe the growth of plants in general is

A

indeterminate

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11
Q

If you started with a fertilized egg (zygote) and allow it to undergo five cycles of mitotic division how many cells would you have?

A

20

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12
Q

After telophase I of meiosis, the chromosomal makeup of each daughter cell is

A

haploid, and the chromosomes are composed of two chromatids.

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13
Q

Epithelial cells exhibit modifications that adapt them for

A

secretion.

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14
Q

Cells that remove damaged cells or pathogens from connective tissue are

A

macrophages.

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15
Q

Which two junctions are found in the intercalated disc of cardiac muscle tissue?

A

gap junctions and desmososmes

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16
Q

What type of cells is modified to transmit signals from one place to another?

A

neurons

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17
Q

The fibre cells of plants are a type of

A

sclerenchyma.

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18
Q

________ provides cells for primary growth.

A

Apical meristems

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19
Q

Which of the following is the main component of phloem sap?

A

sucrose

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20
Q

The centromere is a region in which

A

chromatids are attached to one another.

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21
Q

Which of the following statements is not true?

A

Mitosis may occur without cytokinesis.

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22
Q

If mammalian cells receive a go-ahead signal at the G1 checkpoint, they will

A

complete the cycle and divide.

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23
Q

Which of the following is TRUE of the process of meiosis?

A

Four haploid cells result.

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24
Q

Each of the following is a primary tissue type, except

A

osseous tissue.

25
Q

Stratified cuboidal epithelia would be found

A

lining the ducts that drain sweat glands.

26
Q

Chondrocytes are to cartilage as osteocytes are to

A

bone.

27
Q

Which two junctions are found in the intercalated disc of cardiac muscle tissue?

A

gap junctions and desmososmes

28
Q

The myelin sheath in the peripheral nervous system is produced by the

A

Schwann cells

29
Q

Land plants are composed of all the following tissue types except

A

mesodermal.

30
Q

Pores on the leaf surface that function in gas exchange are called

A

stomata.

31
Q

Additional vascular tissue produced as secondary growth in a stem originates from which cells?

A

vascular cambium

32
Q

Your laboratory partner has an open beaker of pure water. By definition, the water potential (Ψ) of this water is

A

zero.

33
Q

Which of the following is the main component of phloem sap?

A

sucrose

34
Q

The centromere is the site of spindle microtubule attachment during mitosis.

A

False

35
Q

If cells in the process of dividing are subjected to colchicine, a drug that interferes with the functioning of the spindle apparatus, at which stage will mitosis be arrested?

A

metaphase

36
Q

Bacterial cells divide by

A

binary fission

37
Q

Cells that are in a nondividing state are in which phase?

A

G0

38
Q

When comparing prophase I of meiosis with prophase of mitosis, which of the following occurs only in meiosis?

A

Tetrads form

39
Q

Glands that secrete hormones into the blood or tissue fluids are

A

endocrine glands.

40
Q

You would find pseudostratified columnar epithelium lining the

A

trachea.

41
Q

The fibrous components of connective tissue are produced by

A

fibroblasts.

42
Q

Intercalated discs are characteristic of

A

cardiac muscle tissue.

43
Q

The numerous cellular extensions which branch off the neuronal cell body are termed?

A

dendrites

44
Q

________ provides cells for secondary growth.

A

Vascular cambium

45
Q

Assume that a particular chemical interferes with the establishment and maintenance of proton gradients across the membranes of plant cells. All of the following processes would be directly affected by this chemical except

A

xylem transport.

46
Q

Cytokinesis is division of the

A

cytoplasm

47
Q

A particular cell has half as much DNA as some of the other cells in a mitotically active tissue. The cell in question is most likely in

A

G1.

48
Q

The MPF protein complex turns itself off by

A

activating a process that destroys cyclin.

49
Q

Which of the following is TRUE of the process of meiosis?

A

Four haploid cells result.

50
Q

The only example of unicellular exocrine glands are

A

goblet cells.

51
Q

A transitional epithelium would be found

A

lining the urinary bladder.

52
Q

The watery ground substance of blood is called

A

plasma

53
Q

Intercalated discs are characteristic of

A

cardiac muscle tissue.

54
Q

The myelin sheath in the peripheral nervous system is produced by the

A

Schwann cells

55
Q

Which structure is correctly paired with its tissue system?

A

tracheid - vascular tissue

56
Q

Which of the following are water-conducting cells that are dead at functional maturity?

A

tracheids and vessel elements

57
Q

The vascular system of a three-year-old eudicot stem consists of

A

3 rings of xylem and 1 of phloem.

58
Q

If ΨP = 0.3 MPa and ΨS = -0.45 MPa, the resulting Ψ is

A

-0.15 MPa.

59
Q

All of the following normally enter the plant through the roots except

A

carbon dioxide.

CELL BIOLOGY (3 decks)

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