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Cell: The Unit of Life MCQs

Cell: The Unit of Life MCQs

Cell: The Unit of life MCQs

The cell is the basic unit of life in all living organisms. It is the smallest structure capable of performing all the functions necessary for life. Cells come in two main types: prokaryotic and eukaryotic. Prokaryotic cells, like those of bacteria, are simpler and do not have a nucleus. Eukaryotic cells, found in plants, animals, fungi and protists, have a nucleus and other specialized structures called organelles.

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Cell: The Unit of life MCQs

Key parts of a cell include the cell membrane, which protects the cell; the cytoplasm, where chemical reactions occur and the nucleus, which contains genetic material (DNA). Other important organelles in eukaryotic cells include mitochondria (energy production), ribosomes (protein synthesis) and the endoplasmic reticulum (transportation and processing of materials).

Cells can reproduce independently, ensuring the continuation of life. Through processes like mitosis and meiosis, they divide and create new cells, essential for growth, development and repair in organisms.

MCQs

Q1. Name the scientist, who saw a live cell first time.
A) Robert Brown
B) Antonie van Leeuwenhoek
C) Robert White
D) Schleiden
Answer. B
Q2. The most likely method, used to determine the ultrastructure of a cell organelle is
A) autoradiography
B) microdissection
C) electron microscopy
D) phase contrast microscopy
Answer. C
Explanation: (c) Electron microscope is the best device that is used to determine the ultrastructure of a cell organelle. It can magnify objects up to 250000-400000 times. Its resolving power is 1000 times more than the light microscope.
Q3. Cell theory was formulated by
A) Schleiden and Schwann
B) Rudolf Virchow
C) Robert Brown
D) Robert Hooke
Answer. A
Explanation: (a) Cell theory was formulated by Schleiden and Schwann in the year 1839 based on their studies on plants and animal cells and their products.
Q4. Schwann proposed cell theory according to which
A) each cell of the body possesses the same genetic information
B) all life activities of the organisms are present in miniature form in each and every cell of its body
C) bodies of animals and plants are made up of cells
D) a new cell always develops by the division of pre-existing cells
Answer. C
Explanation: (c) Schwann proposed cell theory according to which bodies of animals and plants are made up of cells and their products. He studied different types of animal cells and plant cells and hypothesised about the postulate of cell theory.
Q5. Schleiden and Schwann's cell theory could not explain
A) cell formed from pre-existing cell
B) how new cells were formed
C) body of animals are composed of cells
D) None of the above
Answer. B
Q6. 'Omnis cellula-e-cellula, (all cells arise from pre-existing cells). Who gave this concept and modified the cell theory?
A) Schleiden and Schwann
B) Virchow
C) Robert Brown
D) Leeuwenhoek
Answer. B
Explanation: (b) Rudolf Virchow modified the cell theory and gave the theory 'Omnis cellula-e-cellula' which means that new cells are formed by the division of the pre-existing cell. This is called theory of cell lineage or common ancestry.
Q7. The genetic material is naked in
A) prokaryotic cells
B) eukaryotic cells
C) multicellular cell
D) Both (a) and (b)
Answer. A
Explanation: (a) The genetic material is naked in prokaryotic cells, i.e. it is not bound by any membrane. However, the genetic material in eukaryotes is well enclosed within the nucleus.
Q8. Both eukaryotic and prokaryotic cells contain
A) mitochondria
B) ribosome
C) chloroplast
D) Endoplasmic Reticulum (ER)
Answer. B
Q9. The largest isolated single cell is
A) egg of ostrich
B) egg of peacock
C) egg of duck
D) None of the above
Answer. A
Q10. Which of the following represents prokaryotic cells?
A) PPLO
B) Mycoplasma
C) Bacteria
D) All of these
Answer. D
Explanation: (d) The prokaryotic cells are represented by bacteria, blue-green algae, mycoplasma and PPLO. All these cells contain naked DNA and lack well-defined nucleus.

Enhance your preparation with Arexiq’s Mock Test Series where we provide solutions to various MCQs like we provide in this post “Cell The Unit Of Life MCQ”. Our expert teachers explain the concepts thoroughly, making it easy for you to understand. We offer many types of questions ensuring a clear grasp of concepts.

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FAQs

1. What are the main topics covered in MCQs about “Cell: The Unit of Life”?

Answer. MCQs typically cover topics such as the structure and function of cell organelles, the differences between prokaryotic and eukaryotic cells, cell theory, the plasma membrane, cell division and various cellular processes.

2. How can I effectively prepare for MCQs on “Cell: The Unit of Life”?

Answer. To prepare effectively, study your textbook thoroughly, focus on key concepts and definitions, use diagrams to understand structures, solve previous years’ MCQs, and take regular quizzes to test your knowledge.

3. What types of questions are commonly asked in MCQs about “Cell: The Unit of Life”?

Answer. Common types of questions include identifying functions of cell organelles, differences between cell types, steps in cellular processes (like mitosis and meiosis) and understanding cell theory.

4. Are diagrams important for answering MCQs on “Cell: The Unit of Life”?

Answer. Yes, diagrams are important. Many questions may ask you to identify parts of a cell or understand processes using diagrams. Being able to interpret and label diagrams is an important skill.

5. How much detail should I know about each cell organelle for MCQs?

Answer. You should know the structure, function and importance of each cell organelle. Focus on key details that differentiate organelles and their roles in cellular processes.

6. Can MCQs about “Cell: The Unit of Life” include questions on cell division?

Answer. Yes, questions on cell division, including mitosis and meiosis, are common. Understand the phases, key events and differences between these processes.

7. What resources can I use to practice MCQs on “Cell: The Unit of Life”?

Answer. Use textbooks, online quiz platforms, NEET preparation books and previous years’ question papers. Many educational websites and apps offer practice MCQs for this topic.

8. How important is the knowledge of cell theory for MCQs?

Answer. Understanding cell theory is fundamental as it forms the basis for much of cell biology. Be familiar with the main tenets of cell theory and historical contributions to its development.

9. Will questions about differences between prokaryotic and eukaryotic cells appear in MCQs?

Answer. Yes, these differences are a common topic. Know the structural and functional differences between prokaryotic and eukaryotic cells, including examples of each.

10. How do I manage time while answering MCQs in exams?

Answer. Practice regularly to improve speed and accuracy. Read questions carefully, eliminate incorrect options first and manage your time so that you can review your answers if needed.

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