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Biology > Cells Divide By Binary Fission > Flashcards

Cells Divide By Binary Fission Flashcards

1
Q

What is binary fission?

A

A method of asexual reproduction where a single organism divides into two identical daughter cells.

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2
Q

True or False: Binary fission occurs in prokaryotic cells.

A

True

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3
Q

Fill in the blank: In binary fission, the parent cell divides to form _____ daughter cells.

A

two

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4
Q

What type of organisms primarily reproduce by binary fission?

A

Bacteria and archaea.

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5
Q

What is the first step in the binary fission process?

A

Replication of the DNA.

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6
Q

Multiple choice: Which of the following is NOT a step in binary fission? A) DNA replication B) Cytokinesis C) Meiosis D) Cell elongation

A

C) Meiosis

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7
Q

What occurs during cytokinesis in binary fission?

A

The cytoplasm divides, resulting in two separate cells.

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8
Q

True or False: Binary fission results in genetically identical cells.

A

True

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9
Q

What is the role of the septum in binary fission?

A

To separate the two daughter cells during cytokinesis.

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10
Q

Fill in the blank: The time taken for a single binary fission event is known as the _____ time.

A

generation

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11
Q

What is the advantage of binary fission for bacteria?

A

It allows for rapid population growth.

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12
Q

Multiple choice: Which structure is primarily responsible for DNA replication in binary fission? A) Ribosome B) Nucleus C) Origin of replication D) Cell membrane

A

C) Origin of replication

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13
Q

True or False: Binary fission is a form of sexual reproduction.

A

False

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14
Q

What happens to the cell’s volume during binary fission?

A

The cell’s volume increases before division.

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15
Q

What is the significance of plasmids in binary fission?

A

Plasmids can be replicated and passed to daughter cells, contributing to genetic variation.

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16
Q

Fill in the blank: After binary fission, the two daughter cells are _____ of each other.

A

clones

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17
Q

Multiple choice: Which of the following is a characteristic of binary fission? A) Involves mitosis B) Asexual reproduction C) Involves meiosis D) Requires a mate

A

B) Asexual reproduction

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18
Q

What is the role of the cell membrane during binary fission?

A

It helps in the formation of the septum and division of the cytoplasm.

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19
Q

True or False: Binary fission can occur in multicellular organisms.

A

False

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20
Q

What is a common example of an organism that reproduces by binary fission?

A

Escherichia coli (E. coli)

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21
Q

Fill in the blank: The process of binary fission is typically faster in _____ organisms.

A

unicellular

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22
Q

What factor can influence the rate of binary fission in bacteria?

A

Nutrient availability.

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23
Q

Multiple choice: During which phase does the DNA in a bacterial cell prepare for binary fission? A) G1 phase B) S phase C) G2 phase D) M phase

A

B) S phase

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24
Q

True or False: Binary fission is the only method of reproduction for prokaryotes.

A

False

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25
Q

What is the main disadvantage of binary fission?

A

Lack of genetic diversity.

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26
Q

Fill in the blank: Bacteria can exchange genetic material through a process called _____ before binary fission.

A

conjugation

27
Q

What is meant by ‘asexual reproduction’?

A

Reproduction that does not involve the fusion of gametes.

28
Q

Multiple choice: Which of the following best describes the result of binary fission? A) Two genetically unique cells B) Four genetically identical cells C) Two genetically identical cells D) One genetically unique cell

A

C) Two genetically identical cells

29
Q

True or False: Binary fission can occur in both aerobic and anaerobic conditions.

A

True

30
Q

What is the primary purpose of binary fission in bacterial populations?

A

To increase population size rapidly.

31
Q

Fill in the blank: The _____ is the region of the bacterial chromosome where replication begins.

A

origin of replication

32
Q

What happens to the genetic material during binary fission?

A

It is duplicated and then distributed evenly between the two daughter cells.

33
Q

Multiple choice: In binary fission, the cell elongates and the DNA is replicated during which phase? A) Interphase B) Cytokinesis C) Metaphase D) Anaphase

A

A) Interphase

34
Q

True or False: All bacteria reproduce exclusively by binary fission.

A

False

35
Q

What is the role of the cell wall during binary fission?

A

To provide structure and support during division.

36
Q

Fill in the blank: Bacterial cells typically undergo binary fission every _____ minutes under optimal conditions.

A

20

37
Q

What is the term for the time interval between successive divisions in binary fission?

A

Generation time.

38
Q

Multiple choice: Which of the following factors can slow down binary fission? A) High temperature B) Nutrient depletion C) Low pH D) All of the above

A

D) All of the above

39
Q

True or False: The process of binary fission is a complex series of events.

A

False

40
Q

What is the impact of environmental stress on binary fission?

A

It can slow down or halt the process.

41
Q

Fill in the blank: Bacterial cells often form _____ to survive adverse conditions.

A

endospores

42
Q

What is the importance of genetic variation in bacterial populations?

A

It allows for adaptation to changing environments.

43
Q

Multiple choice: Which of the following is a method of genetic exchange in bacteria? A) Mitosis B) Conjugation C) Binary fission D) Budding

A

B) Conjugation

44
Q

True or False: Binary fission can lead to exponential growth of bacterial populations.

A

True

45
Q

What is the effect of antibiotics on binary fission?

A

Antibiotics can inhibit bacterial growth and division.

46
Q

Fill in the blank: During binary fission, the nucleoid region contains the _____ of the bacterium.

A

DNA

47
Q

Multiple choice: What is a characteristic of asexual reproduction? A) Genetic diversity B) Requires a mate C) No gamete fusion D) Complex life cycles

A

C) No gamete fusion

48
Q

True or False: Binary fission is a slow process compared to sexual reproduction.

A

True

49
Q

What is one advantage of rapid binary fission?

A

It allows for quick colonization of environments.

50
Q

Fill in the blank: The _____ is the point at which the cell membrane pinches during cytokinesis.

A

septum

51
Q

What is the relationship between generation time and population size?

A

Shorter generation times lead to faster population growth.

52
Q

Multiple choice: Which of the following is a consequence of binary fission? A) Genetic variation B) Clonal population C) Increased complexity D) All of the above

A

B) Clonal population

53
Q

True or False: Binary fission can occur in response to environmental signals.

A

True

54
Q

What is the primary limitation of binary fission in bacterial populations?

A

Limited genetic diversity.

55
Q

Fill in the blank: The process of binary fission is essential for the _____ of bacterial populations.

A

survival

56
Q

Multiple choice: Which of the following organisms does NOT reproduce by binary fission? A) Bacteria B) Yeast C) Amoeba D) Fungi

A

D) Fungi

57
Q

True or False: The binary fission process is similar to mitosis in eukaryotic cells.

A

False

58
Q

What is the effect of temperature on the rate of binary fission?

A

Higher temperatures generally increase the rate, up to a point.

59
Q

Fill in the blank: Binary fission is a form of _____ reproduction.

A

asexual

60
Q

Multiple choice: Which of the following factors can increase the rate of binary fission? A) High nutrient levels B) Low temperature C) High salt concentration D) None of the above

A

A) High nutrient levels

61
Q

True or False: Binary fission involves complex cellular machinery.

A

True

62
Q

What is one way bacteria can increase genetic diversity despite asexual reproduction?

A

Through horizontal gene transfer.

63
Q

Fill in the blank: The _____ is the area where the two daughter cells separate after binary fission.

A

septum

Biology (28 decks)

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