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Dungeon
Ikut Turutan
LEVEL 3 : "FINAL SPLIT"
SUREKHA LAKSHM
2
Masalah tambahan (15/ 20)
Allow incorrect answer
Sembunyikan jawapan
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# 1

pilihan

A scientist observes cell undergoing division but notices that homologous chromosomes are pairing up and exchanging genetic material. Which of the following best describes the type of cell division ?

  • A) Mitosis
  • B) Meiosis I
  • C) Meiosis II
  • D) Binary Fission

# 2

pilihan

A new drug is developed to stop the cell cycle at anaphase. What immediate effect would this have on mitosis?

  • A) Cells would fail to replicate their DNA
  • B) Centromere splits into two
  • C) Sister chromatids would not separate properly
  • D) The nuclear membrane would not break down

# 3

pilihan

Which of the following best explains why meiosis, rather than mitosis, is necessary for sexual reproduction?

  • A) Meiosis produces genetically identical cells.
  • B) Meiosis creates cells with the same number of chromosomes as the parent.
  • C) Meiosis reduces chromosome number to maintain stability in offspring.
  • D) Meiosis ensures that all offspring have identical traits.

# 4

pilihan

Jellyfish can reproduce both sexually and asexually. In times of environmental stress, why might sexual reproduction (meiosis) be more advantageous than asexual reproduction (mitosis)?

  • A) Meiosis allows offspring to develop faster
  • B) Meiosis increases genetic variation, which can help the species adapt
  • C) Mitosis requires more energy than meiosis
  • D) Mitosis is only possible in multicellular organisms

# 5

pilihan

A cell is observed under a microscope, and its chromosomes are aligned at the center of the cell. However, the spindle fibers is malfunctioning. What is the most likely consequence of this error ?

  • A) Chromosomes will fail to condense properly
  • B) The nuclear membrane will not break down
  • C) Sister chromatids will not separate
  • D) Cytoplasm doesn’t divides

# 6

pilihan

A genetic disorder occurs due to nondisjunction, where homologous chromosomes fail to separate properly during cell division. Which of the following is the most likely outcome?

  • A) Cells with half the normal number of chromosomes
  • B) Cells with extra or missing chromosomes
  • C) Cells with identical genetic material
  • D) Cells that fail to complete cytokinesis

# 7

pilihan

Which statement best explains why these tissues undergo different types of division?

  • A) Sample X undergoes meiosis to maintain genetic variation, while Sample Y undergoes mitosis to produce identical cells.
  • B) Sample X undergoes mitosis to replace old cells, while Sample Y undergoes meiosis to produce genetically diverse gametes.
  • C) Both samples undergo mitosis, but Sample Y has an additional step to ensure chromosome reduction.
  • D) Both samples undergo meiosis because all cells must have half the original chromosome number.
Which statement best explains why these tissues undergo different types of division?

# 8

pilihan

If a scientist wanted to develop a new method to prevent cancerous cells from multiplying, which phase of mitosis should they target and why?

  • A) Prophase, to prevent chromosomes from condensing
  • B) Metaphase, to stop chromosomes from aligning in the middle of the cell
  • C) Anaphase, to stop the separation of chromatids
  • D) Telophase, to block nuclear membrane reformation

# 9

pilihan

A geneticist is studying a rare mutation that affects crossing over during meiosis. Which of the following outcomes is most likely to be observed in organisms with this mutation?

  • A) Reduced genetic variation in offspring due to the absence of recombination
  • B) Increased chromosome number in gametes, leading to larger offspring
  • C) Failure of cytokinesis, resulting in abnormally large cells
  • D) Production of identical gametes, leading to higher mutation rates

# 10

jawapan pendek

Explain why meiosis is important for sexual reproduction.

  • Meiosis is important for sexual reproduction because it reduces the chromosome number by half, ensuring that when gametes fuse during fertilization, the offspring has the correct number of chromosomes

  • It also introduces genetic variation through crossing over leading to genetically unique offspring.

# 11

jawapan pendek

What would happen if mitosis did not occur properly in an organism?

  • If mitosis did not occur properly, cells might have abnormal chromosome numbers, leading to genetic disorders. This can cause tissue damage, or even diseases like cancer

  • If mitosis did not occur properly, cells might have abnormal chromosome numbers, leading to genetic disorders.

  • cells might have abnormal chromosome numbers

# 12

jawapan pendek

Describe one major difference between metaphase in mitosis and metaphase I in meiosis.

  • In metaphase of mitosis, chromosomes line up at the center of the cell. in metaphase I of meiosis, homologous chromosome pairs line up together

  • metaphase in mitosis, chromosomes are arranged in an equatorial plane. metaphase in meiosis. homologous chromosome pairs together and arrange in equatorial plane

# 13

jawapan pendek

How does the process of crossing over in meiosis contribute to genetic variation in offspring?

  • Crossing over occurs during prophase I of meiosis, where homologous chromosomes exchange genetic material. This results in new combinations of alleles, increasing genetic diversity in offspring.

  • Crossing over occurs during prophase I of meiosis, where homologous chromosomes exchange genetic informations

  • homologous chromosomes pair together, crossing over occurs that is the exchange of genetic information between chromosomes

  • homologous chromosomes pair together, crossing over occurs that is the exchange of genetic information between homologous chromosomes

# 14

jawapan pendek

A scientist examines a cell and notices that the sister chromatids are pulled apart to opposite poles. What stage of cell division is this, and how this process differ between mitosis and meiosis ?

  • The cell is in anaphase. In mitosis, sister chromatids separate to produce identical daughter cells. In meiosis, this happens during anaphase II, but in anaphase I, homologous chromosomes separate

# 15

jawapan pendek

Why is it important that gametes produced through meiosis have half the chromosome number of normal body cells?

  • Gametes must have half the chromosome number so that when fertilization occurs, the resulting zygote has the correct diploid number and prevents genetic abnormalities.

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