Free Cell Structure and Function MCQs with Answers

2,478 Cell Structure and Function MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.

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2,478 questions · page 28 of 124

  • A. Klinefelter's syndrome
  • B. Mitosis
  • C. Metastasis
  • D. Turner's syndrome

Explanation: Tissue culture involves growing cells or tissues in a controlled environment outside of their natural context, typically in a laboratory…

Correct answer: Mitosis

542. Tumor cells:

  • A. Klinefelter's syndrome
  • B. Metastasis
  • C. Mitosis
  • D. Turner's syndrome

Explanation: Metastasis is a critical aspect of cancer progression, closely tied to the formation and growth of tumors.

Correct answer: Metastasis

543. Karyokinesis:

  • A. Pairing
  • B. Leptotene
  • C. Division of nucleus
  • D. Protein

Explanation: Karyokinesis, also known as nuclear division, is a crucial step in cell division, ensuring accurate distribution of genetic material to…

Correct answer: Division of nucleus

544. Apoptosis:

  • A. Leptotene
  • B. Protein
  • C. Cell suicide
  • D. Division of nucleus

Explanation: Apoptosis, often referred to as programmed cell death, is a highly regulated process in which cells undergo self-destruction in a…

Correct answer: Cell suicide

545. Meiosis I:

  • A. Rapid division
  • B. Cell cleavage
  • C. Diplotene
  • D. G1 phase

Explanation: Diplotene occurs in meiosis to ensure that homologous chromosomes remain attached via chiasmata, allowing for genetic recombination.

Correct answer: Diplotene
  • A. Diplotene
  • B. Rapid division
  • C. Cell cleavage
  • D. Missing X

Explanation: In malignant tumors, the process of cell division becomes dysregulated due to mutations in genes that control cell cycle checkpoints and…

Correct answer: Rapid division

547. Cytokinesis:

  • A. Missing X
  • B. Diplotene
  • C. Rapid division
  • D. Cell cleavage

Explanation: Cell cleavage and cytokinesis are intimately related processes that occur during cell division.

Correct answer: Cell cleavage
  • A. Missing X
  • B. Rapid division
  • C. Cell cleavage
  • D. Diplotene

Explanation: Turner syndrome, also known as 45,X or monosomy X, is a genetic disorder that affects females, resulting from a missing or incomplete X…

Correct answer: Missing X
  • A. Time it takes for one cell to undergo mitosis
  • B. Series of events that cells go through as they grow and divide
  • C. Period of time between the birth and the death of a cell
  • D. Period of division of cell

Explanation: The cell cycle is a series of coordinated events that occur in a cell's life, encompassing growth, replication of genetic material, and…

Correct answer: Series of events that cells go through as they grow and divide
  • A. Sister chromatid
  • B. Centromere
  • C. Centriole
  • D. Chromosome

Explanation: The centromere is a specialized region of a chromosome that plays a crucial role in cell division.

Correct answer: Centromere
  • A. Sister chromatids
  • B. Spindles
  • C. Centromeres
  • D. Centriole

Explanation: Chromosomes become more and more thick ultimately each chromosome is visible having two sister chromatids, attached at centromere.

Correct answer: Sister chromatids
  • A. Prophase and metaphase
  • B. Anaphase and interphase
  • C. Anaphase and prophase
  • D. Prophase and telophase

Explanation: Chromosomes are visible during prophase and metaphase due to condensation.

Correct answer: Prophase and metaphase
  • A. S phase
  • B. Prophase
  • C. Interphase
  • D. G0

Explanation: Prophase is the first stage of mitosis, where chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the…

Correct answer: Prophase
  • A. Interphase, prophase, metaphase, anaphase, telophase
  • B. Prophase, metaphase, anaphase, telophase
  • C. Interphase, prophase, metaphase, telophase
  • D. None of the above

Explanation: Explanation for this question will be added soon!

Correct answer: Prophase, metaphase, anaphase, telophase
  • A. It duplicates the DNA
  • B. It divides the cell in half
  • C. It helps separate the chromosomes
  • D. It provides energy

Explanation: The kinetochore serves as the attachment point for spindle microtubules, facilitating the movement and alignment of chromosomes during…

Correct answer: It helps separate the chromosomes
  • A. Chromatin
  • B. Centrioles
  • C. Phragmoplast
  • D. Contractile ring

Explanation: Recent research suggests that while centrioles are absent in some animal cells during interphase, they may still be present in modified…

Correct answer: Centrioles
  • A. Spindle fibers
  • B. Size
  • C. Growth rate
  • D. Shape

Explanation: Explanation for this question will be added soon!

Correct answer: Growth rate
  • A. Connective
  • B. Muscle
  • C. Epithelial
  • D. Spongy

Explanation: Epithelial tissue primarily lines surfaces exposed to the external environment or internal cavities with direct openings to the outside.

Correct answer: Epithelial
  • A. Nerve
  • B. Connective
  • C. Muscle
  • D. Joints

Explanation: Skeletal muscle tissue enables finger movement when playing the piano by contracting and relaxing in response to signals from the nervous…

Correct answer: Muscle
  • A. Condensation → Nuclear membrane disassembly → Arrangement at equator → Centromere division → Segregation → Telophase
  • B. Condensation → Arrangement at equator → Centromere division → Segregation → Telophase
  • C. Condensation → Nuclear membrane disassembly → Crossing over → Segregation → Telophase
  • D. Nuclear membrane disassembly → Condensation → Arrangement at equator → Segregation → Centromere division → Telophase

Explanation: Mitosis is divided into four phases, i.e., prophase, metaphase, anaphase, and telophase.

Correct answer: Condensation → Nuclear membrane disassembly → Arrangement at equator → Centromere division → Segregation → Telophase