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LEVEL 3 : "FINAL SPLIT"

LEVEL 3 : "FINAL SPLIT"

SUREKHA LAKSHM
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Ikut Turutan

LEVEL 3 : "FINAL SPLIT"

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SUREKHA LAKSHM

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Kuiz dicipta dengan peta premium

15 soalan

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# 1pilihan
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
# 2pilihan
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
# 3pilihan
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.
# 4pilihan
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
# 5pilihan
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
# 6pilihan
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
# 7pilihan
Which statement best explains why these tissues undergo different types of division?
Question image
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.
# 8pilihan
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
# 9pilihan
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
# 10Jawapan 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.
# 11Jawapan 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
# 12Jawapan 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
# 13Jawapan 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
# 14Jawapan 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
# 15Jawapan 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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