RECITATION Flashcards

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1
Q

What is the primary purpose of mitosis in multicellular organisms?

A

nag po-produce ng body cells. for growth and repair ng damaged tissue.

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2
Q

In which phase of mitosis do chromosomes become visible?

A

prophase. nagiging mas visible sila kasi condensed na sila.

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3
Q

How do the spindle fibers function during mitosis?

A

helps the chromosomes to move to the opposite side of the cell. atsaka sila ang humihila sa mga chromosomes (chromatids/sister chromatids. TAMA BA???? EWAN KO NA NALILITO NA AKO) para maghiwalay

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4
Q

What role does the centromere play in chromosome separation?

A

nagho-hold sa sister chromatids, tapos siya rin yung dinidikitan (or hinihila or kinakapitan) ng spindle fibers para maghiwalay sila.

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5
Q

How does cytokinesis differ in plant and animal cells?

A
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6
Q

What are the stages of mitosis, and what occurs during each stage?

A

• Prophase: nag co-condense ang chromosomes at nag fo-form na yung spindle fibers.

•	Metaphase: Nag-aalign ang chromosomes sa gitna/equatorial plate.

•	Anaphase: Naghiwalay ang sister chromatids at hinihila papunta sa opposite sides. (walang forever)

•	Telophase: Bumabalik ang nuclear membrane, nagiging less condensed ang chromosomes.

•	Cytokinesis: Hiwalay na ang cells.
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7
Q

How does DNA replication relate to mitosis?

A
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8
Q

What is the significance of the G2 phase before a cell enters mitosis?

A
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9
Q

How does mitosis contribute to tissue repair and growth?

A

nag po-produce ng body cells. like kapag may sugat ka, gumagawa ng cell through mitosis para ma repair ‘yung damaged tissue. tas sa growth, para tumagkad ka or lumaki.

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10
Q

Why is mitosis often described as a process of “division to multiply”?

A
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11
Q

How does meiosis ensure genetic diversity in sexually reproducing organisms?

A

Sa meiosis, nagkakaroon ng crossing over at independent assortment, kaya iba-iba ang genes ng bawat offspring.nagkakaroon ng genetic variety.

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12
Q

What is the significance of crossing over during meiosis?

A

nag e-exchange ng genetic material.

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13
Q

How many rounds of cell division occur in meiosis, and how do they differ?

A

two. meiosis I (nag-separate ang homologous chromosomes) at meiosis II (nag-separate ang sister chromatids).

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14
Q

Explain the role of homologous chromosomes in meiosis.

A

homologous chromosomes may parehong genes pero galing sa magkaibang parent. paternal homologous, maternal homologous.

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15
Q

At what stage does synapsis and the formation of tetrads occur in meiosis?

A

prophase I, nagpa-pair ang homologous chromosomes (synapsis) at bumubuo ng tetrads.

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16
Q

How does independent assortment during meiosis I contribute to genetic variation?

A

randomly nag-aarrange ang homologous chromosomes kaya iba-iba ang combination ng genes sa offspring.

17
Q

In which stage of meiosis are sister chromatids separated?

A

meiosis II. specifically sa anaphase II.

18
Q

How does the chromosome number in gametes compare to the original cell?

A
19
Q

What is the significance of meiosis in sexual reproduction?

A
20
Q

Why is meiosis referred to as a reduction division?

A

kasi nababawasan ‘yung number ng chromosome, from diploid (46) to haploid (23).

21
Q

How does meiosis differ from mitosis in terms of the end product?

A