Free Cytoplasmic Organelles MCQs with Answers
158 Cytoplasmic Organelles MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.
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- A. Ribosomes
- B. Nuclear membrane
- C. Plasmids
- D. Golgi apparatus
Explanation: The Golgi and plasma membranes are the two main sites where constituents of cell wall are synthesized.
Correct answer: Golgi apparatus- A. Rough endoplasmic reticulum
- B. Smooth endoplasmic reticulum
- C. Golgi apparatus
- D. Ribosomes
Explanation: SER is responsible for the synthesis of hormones and steroids. It also plays a major role in detoxication.
Correct answer: Smooth endoplasmic reticulum- A. Smooth endoplasmic reticulum
- B. Rough endoplasmic reticulum
- C. Golgi apparatus
- D. Ribosomes
Explanation: SER is responsible for 1. Hormone and steroids synthesis 2. Detoxification 3. Impulse transmission.
Correct answer: Smooth endoplasmic reticulum- A. Lysosome
- B. Golgi complex
- C. Vacuole
- D. Centrioles
Explanation: Golgi apparatus is often regarded as the secretary organelle of the cell.
Correct answer: Golgi complex- A. Nucleus
- B. Miitochondria
- C. Lysosome
- D. Vacuole
Explanation: The ATP synthases comprise a very large group of highly conserved enzymes that are found in the bacterial cytoplasmic membranes, the…
Correct answer: Miitochondria- A. Mitochondria
- B. Golgi bodies
- C. Lysosome
- D. Chloroplast
Explanation: A lysosome is a membrane-bound organelle found in many animal cells. They are spherical vesicles that contain hydrolytic enzymes that can…
Correct answer: Lysosome- A. Ribosome
- B. mRNA
- C. Protein
- D. Enzymes
Explanation: The nucleolus is a spherical structure found in the cell's nucleus whose primary function is to produce and assemble the cell's ribosomes.
Correct answer: Ribosome- A. Seven Triplets
- B. Eleven Triplets
- C. Nine Triplets
- D. Five Triplets
Explanation: Each centriole is composed of Nine Triplets of Microtubules
Correct answer: Nine Triplets- A. Vacuole and Nucleoplasm
- B. Cytoplasm and Nucleoplasm
- C. Vacuole and stroma
- D. Vacuole and Cytoplasm
Explanation: Tonoplast is the membrane separating the Vacuole and Cytoplasm
Correct answer: Vacuole and Cytoplasm- A. Chloroplast
- B. Chromoplast
- C. Leucoplast
- D. Amyloplast
Explanation: Chromoplasts are coloured protoplasts. They attract insects and cause pollination.
Correct answer: Chromoplast- A. Cisternae
- B. Cristae
- C. Mesosome
- D. Infolds
Explanation: The folds of the Inner Membrane of mitochondria are called Cristae
Correct answer: Cristae- A. Mitochondria
- B. Golgi Bodies
- C. Lysosomes
- D. Chloroplast
Explanation: The organelles that are spherical sacs, surrounded by a single membrane, and contain hydrolytic enzymes are "Lysosomes." Lysosomes are…
Correct answer: Lysosomes- A. Nucleus only
- B. Nucleolus only
- C. Nucleus & nucleolus only
- D. None of the above
Explanation: Nucleolus is responsible for the synthesis of ribosomal RNA and they are also responsible for storing the RNA.
Correct answer: Nucleolus only- A. DNA polymerase
- B. Salivary amylase
- C. Pancreatic amylase
- D. DNA helicase
Explanation: The correct answer is DNA helicase since it is the only one whose final destination is inside the cell.
Correct answer: DNA helicase- A. Nuclear membrane
- B. Inner mitochondrial membrane
- C. Endoplasmic reticulum
- D. Plasma membrane
Explanation: Option B is correct since membranes are involved in ATP production (such as the internal membranes of mitochondria and chloroplasts)…
Correct answer: Inner mitochondrial membrane- A. Endocytosis
- B. Pinocytosis
- C. Phagocytosis
- D. Exocytosis
Explanation: Hormone secretion is always done by exocytosis. All the other options are used for other various processes inside of the cell.
Correct answer: Exocytosis- A. Chloroplasts
- B. Chromoplasts
- C. Leucoplasts
- D. All of them
Explanation: Option C is correct since the roots of plants contain 'leucoplast' which is colorless, plastids, and act as storage of food.Option A is…
Correct answer: Leucoplasts- A. Chloroplasts
- B. Chromoplasts
- C. Leucoplasts
- D. All of these options are correct
Explanation: c) Leucoplasts:Leucoplasts are a third type of plastid found in plant cells.
Correct answer: Leucoplasts- A. 0.5 micrometer
- B. 1.5 micrometer
- C. 2 micrometer
- D. 1 micrometer
Explanation: Correct option is A. Peroxisomes are 0.1 -- 0.5μm in diameter and are bound by single membranes that enclose dense matrices primarily…
Correct answer: 0.5 micrometer- A. Cisternae
- B. Cytosol
- C. Endocytosis
- D. Both A and B
Explanation: The cytosol (the soluble portion of the cytoplasm outside the organelles) is mostly composed of water and many low molecular weight…
Correct answer: Cytosol