Inside The Cell: Cell Organelles Quiz

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Inside The Cell: Cell Organelles Quiz - Quiz

Are you ready to dive into the microscopic world of biology? Our Cell Organelles Quiz is the perfect way to test and expand your knowledge of the essential structures within cells. This quiz will challenge your understanding and help you learn new facts about cell organelles and their functions. Each question will test your knowledge and provide interesting insights into the tiny parts that make up living organisms. Share your results with friends and compare your scores to see who knows the most about cell biology. Ready to test your knowledge of cell organelles? Take the Cell Organelles Quiz now Read moreand find out how much you know about it!


Cell Organelles Questions and Answers

  • 1. 

    Cytosol contains the following except

    • A.

      Ribosomes

    • B.

      Cytoskeleton

    • C.

      Transport vesicles

    • D.

      Secretory vesicles

    • E.

      Lysosomes

    Correct Answer
    E. Lysosomes
    Explanation
    Cytosol is the fluid component of the cytoplasm, which contains various cellular components. Ribosomes, cytoskeleton, transport vesicles, and secretory vesicles are all found in the cytosol. However, lysosomes are not typically found in the cytosol. Lysosomes are membrane-bound organelles that contain enzymes responsible for breaking down waste materials and cellular debris. They are typically found within the cytoplasm but are not part of the cytosol itself.

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  • 2. 

    Cytosol, a gel like liquid, contains no _________ organelles.

    Correct Answer
    membrane bound
    Explanation
    Cytosol is a gel-like liquid that is found within cells. It is the region of the cell that is not occupied by any membrane-bound organelles. This means that membrane-bound organelles, such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus, are not present in the cytosol. These organelles are surrounded by a membrane that separates their contents from the cytosol. Therefore, the correct answer is "membrane bound."

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  • 3. 

    The cytoplasm, located outside the nucleus, contains all the following organelles except

    • A.

      Lysosomes

    • B.

      Golgi apparatus

    • C.

      Mitochondria

    • D.

      Peroxisomes

    • E.

      Cytosol

    Correct Answer
    E. Cytosol
    Explanation
    The cytoplasm is the gel-like substance that fills the cell and surrounds the organelles. It contains various organelles that perform different functions within the cell. Lysosomes, Golgi apparatus, mitochondria, and peroxisomes are all organelles that are found in the cytoplasm. However, cytosol is not an organelle but rather the liquid component of the cytoplasm. Therefore, the correct answer is cytosol.

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  • 4. 

    The ________ synthesizes RNA.

    Correct Answer
    nucleolus
    Explanation
    The nucleolus is responsible for synthesizing RNA. It is a distinct structure within the nucleus of a cell and plays a crucial role in ribosome biogenesis. RNA is transcribed from DNA in the nucleus and then processed and assembled into ribosomes within the nucleolus. Therefore, the nucleolus is the correct answer for the structure that synthesizes RNA.

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  • 5. 

    The ________ is surrounded by a double envelope.

    Correct Answer
    nucleus
    Explanation
    The nucleus is surrounded by a double envelope. The nucleus is a membrane-bound organelle found in eukaryotic cells. It contains the cell's genetic material and is responsible for controlling the cell's activities. The double envelope refers to the two layers of membrane that surround the nucleus, known as the nuclear envelope. This envelope acts as a barrier, regulating the movement of molecules in and out of the nucleus.

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  • 6. 

    The _________ houses the genetic material.

    Correct Answer
    nucleus
    Explanation
    The nucleus is the correct answer because it is the organelle that houses the genetic material in a cell. It contains the DNA, which carries the instructions for the cell's functions and characteristics. The nucleus is surrounded by a nuclear membrane, which helps protect the DNA and regulate the passage of molecules in and out of the nucleus. Inside the nucleus, the genetic material is organized into structures called chromosomes, which play a crucial role in cell division and inheritance. Therefore, the nucleus is responsible for storing and maintaining the genetic information of a cell.

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  • 7. 

    In _________, cell debris and matter enter via _____.

    Correct Answer
    lysosomes, endocytosis
    Explanation
    Lysosomes are organelles within cells that contain enzymes capable of breaking down waste materials and cellular debris. Endocytosis is the process by which cells engulf and internalize substances from their external environment. In this case, lysosomes function by fusing with endocytic vesicles that have brought in cell debris and matter, allowing the enzymes within the lysosomes to degrade and recycle these materials.

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  • 8. 

    Suicide bags under __________ in lysosomes.

    Correct Answer
    autophagy
    Explanation
    Lysosomes are responsible for breaking down and recycling cellular waste, including damaged organelles and proteins. Autophagy is the process by which cells engulf and break down their own components, including organelles, through the use of lysosomes. Therefore, suicide bags, which are referring to the process of self-destruction of organelles, occur under autophagy in lysosomes.

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  • 9. 

    Digestive enzymes catalyze hydrolysis in __________.

    Correct Answer
    lysosomes
    Explanation
    Digestive enzymes are responsible for breaking down large molecules into smaller ones through a process called hydrolysis. Lysosomes are organelles within cells that contain various digestive enzymes. These enzymes are enclosed within the lysosomes and are involved in the digestion of macromolecules such as proteins, carbohydrates, and lipids. Therefore, the correct answer is lysosomes because they are the specific cellular compartments where hydrolysis catalyzed by digestive enzymes takes place.

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  • 10. 

    ________ contain oxidative enzymes to detoxify waste.

    Correct Answer
    Peroxisomes
    Explanation
    Peroxisomes are organelles found in eukaryotic cells that contain oxidative enzymes. These enzymes are responsible for detoxifying various waste products, such as hydrogen peroxide, by breaking them down into less harmful substances. This detoxification process helps to maintain cellular homeostasis and protect the cell from oxidative damage. Therefore, peroxisomes play a crucial role in waste management within the cell.

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  • 11. 

    The _______________ recieves transport vesicles from __________.

    Correct Answer
    golgi apparatus, SER
    Explanation
    The Golgi apparatus receives transport vesicles from the smooth endoplasmic reticulum (SER). The SER is responsible for synthesizing lipids and hormones, and it also plays a role in detoxifying drugs and alcohol. These substances are then transported in vesicles to the Golgi apparatus, where they undergo further processing and sorting before being sent to their final destinations within the cell or outside of it.

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  • 12. 

    In the golgi apparatus, secretory vesicles leave via

    Correct Answer
    exocytosis
    Explanation
    Exocytosis is the process by which secretory vesicles release their contents outside the cell. The Golgi apparatus acts as a sorting and packaging center for proteins and lipids, modifying them and packaging them into vesicles. These vesicles then fuse with the cell membrane and release their contents into the extracellular space through exocytosis. Therefore, exocytosis is the correct answer as it describes the mechanism by which secretory vesicles leave the Golgi apparatus.

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  • 13. 

    Membrane flattened sacs called _______, are located in the golgi apparatus.

    Correct Answer
    cisternae
    Explanation
    The correct answer is "cisternae". Cisternae are flattened sacs that make up the structure of the Golgi apparatus. They are responsible for receiving, modifying, and packaging proteins and lipids that are synthesized in the endoplasmic reticulum. These sacs play a crucial role in the sorting and distribution of these molecules to their final destinations within the cell or for secretion outside the cell.

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  • 14. 

    ____ face recieves, and _____ face exports in the golgi apparatus.

    Correct Answer
    CIS, trans
    Explanation
    In the Golgi apparatus, the cis face receives vesicles from the endoplasmic reticulum and the trans face exports vesicles to their final destination. The cis face is responsible for receiving and sorting proteins and lipids, while the trans face packages and transports them to be delivered to other parts of the cell or to the cell membrane for secretion.

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  • 15. 

    The __________ is the powerhouse in ATP production.

    • A.

      Golgi apparatus

    • B.

      RER

    • C.

      Mitochondria

    • D.

      SER

    • E.

      Lysosomes

    Correct Answer
    C. Mitochondria
    Explanation
    The mitochondria is known as the powerhouse of the cell because it is responsible for producing ATP, which is the main energy currency of the cell. ATP is synthesized through a process called cellular respiration, which takes place in the mitochondria. This organelle has a highly folded inner membrane that provides a large surface area for ATP production. Therefore, the mitochondria plays a crucial role in generating energy for various cellular activities.

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  • 16. 

    The highest concentration of mitochondria are in the _____.

    Correct Answer
    muscles
    Explanation
    Mitochondria are the powerhouses of the cell, responsible for producing energy in the form of ATP. Muscles require a lot of energy to contract and perform their functions, so they have a high demand for ATP. Therefore, it makes sense that muscles would have a higher concentration of mitochondria compared to other tissues in the body.

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  • 17. 

    The RER is involved in all of the following except:

    • A.

      Detoxification

    • B.

      Protein synthesis

    • C.

      ATP production

    • D.

      Contains ribosomes

    • E.

      A and C

    Correct Answer
    E. A and C
    Explanation
    The RER, or rough endoplasmic reticulum, is a network of membranes involved in protein synthesis and contains ribosomes. It plays a vital role in the synthesis, folding, and modification of proteins. Additionally, it is involved in the transport of proteins to other parts of the cell. However, the RER is not directly involved in detoxification or ATP production. Detoxification primarily occurs in the smooth endoplasmic reticulum (SER), while ATP production takes place in the mitochondria. Therefore, the correct answer is A and C.

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  • 18. 

    The SER does all of the following except:

    • A.

      Detoxification

    • B.

      Lipid metabolism

    • C.

      Stores calcium ions

    • D.

      ATP production

    • E.

      Uses transport vesicles

    Correct Answer
    D. ATP production
    Explanation
    The question is asking for an exception among the given options. The SER is involved in various functions, including detoxification, lipid metabolism, and storing calcium ions. However, ATP production is not a function of the smooth endoplasmic reticulum (SER). ATP production primarily occurs in the mitochondria through cellular respiration. Therefore, ATP production is the exception among the listed functions of the SER.

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  • 19. 

    The SER contains ____ ribosomes.

    Correct Answer
    no
    Explanation
    The statement "The SER contains no ribosomes" means that the smooth endoplasmic reticulum (SER) does not have any ribosomes attached to its surface. This is in contrast to the rough endoplasmic reticulum (RER), which does have ribosomes attached to it. The absence of ribosomes in the SER allows it to perform functions such as lipid synthesis, detoxification, and calcium storage.

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  • 20. 

    _______, within cytosol, are involved in protein synthesis, and are not exported.

    Correct Answer
    Ribosomes
    Explanation
    Ribosomes, found within the cytosol, play a crucial role in protein synthesis. They are responsible for translating the genetic information from mRNA into proteins. Ribosomes are not exported outside of the cell because their function is specific to the cytosol. They are essential organelles that ensure the proper production of proteins within the cell.

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  • 21. 

    Cylindrical protein bundles that are important in cell division are

    Correct Answer
    centrioles
    Explanation
    Centrioles are cylindrical protein bundles that play a crucial role in cell division. They are found in animal cells and are responsible for organizing the microtubules that form the spindle apparatus during mitosis. The spindle apparatus helps in the separation of chromosomes and the formation of two daughter cells. Centrioles also play a role in the organization of cilia and flagella, which are important for cellular movement. Therefore, centrioles are essential structures involved in various cellular processes related to cell division and motility.

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  • 22. 

    Used for transport between the nucleus and cytoplasm, ____ are small, barrel shaped objects.

    Correct Answer
    vaults
    Explanation
    Vaults are small, barrel-shaped objects that are used for transport between the nucleus and cytoplasm. Vaults are large ribonucleoprotein particles that have been found in eukaryotic cells. They are involved in various cellular processes, including transport of molecules between the nucleus and cytoplasm. Vaults have a unique structure, resembling a barrel or a hollow cylinder, and are composed of multiple protein subunits. They are believed to play a role in cellular transport and may have functions related to drug resistance and cellular stress responses.

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  • 23. 

    Which of the following are non membrane bound organelles?

    • A.

      Ribosomes

    • B.

      Vaults

    • C.

      Centrioles

    • D.

      A and B

    • E.

      All of the above

    Correct Answer
    E. All of the above
    Explanation
    All of the options listed in the question are non-membrane bound organelles. Ribosomes are responsible for protein synthesis, vaults are involved in cellular transport, and centrioles play a role in cell division. Therefore, all of these organelles are non-membrane bound and are correct answers to the question.

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  • 24. 

    Microfilaments, microtubules, and intermediate filaments are parts of the ________.

    Correct Answer
    cytoskeleton
    Explanation
    Microfilaments, microtubules, and intermediate filaments are all components of the cytoskeleton. The cytoskeleton is a network of protein filaments that provides structural support and shape to cells. Microfilaments, made up of actin protein, are involved in cell movement and contraction. Microtubules, composed of tubulin protein, form the spindle fibers during cell division and provide tracks for intracellular transport. Intermediate filaments provide mechanical strength to cells and help anchor organelles. Together, these three types of filaments make up the cytoskeleton, which plays a crucial role in maintaining cell shape, supporting cellular processes, and facilitating cell movement.

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  • 25. 

    The __________ helps in muscle contraction, maintains structure, and resists mechanical stress.

    Correct Answer
    cytoskeleton
    Explanation
    The cytoskeleton is a network of protein filaments that provides structural support to cells and helps in muscle contraction. It maintains the shape of the cell and enables it to resist mechanical stress. Therefore, the cytoskeleton is responsible for maintaining cell structure and facilitating various cellular processes such as movement and division.

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  • 26. 

    Kidney tubules are examples of __________.

    Correct Answer
    tight junctions
    Explanation
    Kidney tubules are examples of tight junctions. Tight junctions are specialized structures that form a barrier between cells, preventing the leakage of substances between them. In the case of kidney tubules, tight junctions play a crucial role in maintaining the selective reabsorption of water and solutes from the filtrate. They ensure that the reabsorbed substances pass through the cells, rather than between them, allowing for precise control of the composition of urine. Therefore, the presence of tight junctions in kidney tubules is essential for their proper functioning in the filtration and reabsorption processes.

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  • 27. 

    Occludins face adjacent cells together to form a nearly impermeable barrier to movement of substances between cells are _______.

    • A.

      Tight junctions

    • B.

      Desmosome

    • C.

      Gap junctions

    • D.

      Cytoskeleton

    • E.

      Membranes

    Correct Answer
    A. Tight junctions
    Explanation
    Occludins are proteins that are found in tight junctions. Tight junctions are specialized structures that hold adjacent cells tightly together, forming a nearly impermeable barrier. These junctions prevent the movement of substances between cells, ensuring the integrity and selective permeability of the tissue. Desmosomes, gap junctions, cytoskeleton, and membranes do not play a direct role in forming impermeable barriers between cells.

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  • 28. 

    Examples of _______ are heart, uterus, and skin.

    Correct Answer
    desmosomes
    Explanation
    Desmosomes are cell structures that act as anchoring junctions, connecting adjacent cells together. They are found in tissues that undergo mechanical stress, such as the heart, uterus, and skin. Desmosomes provide strength and stability to these tissues by forming strong connections between cells, preventing them from being easily separated. This allows the tissues to withstand stretching and contraction without tearing or damage. Therefore, the examples given in the question - heart, uterus, and skin - are all tissues where desmosomes play a crucial role in maintaining their structural integrity.

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  • 29. 

    _______ are connexons bind to each other and form channels that enable materials to move.

    Correct Answer
    Gap junctions
    Explanation
    Gap junctions are specialized protein structures that allow direct communication and exchange of molecules between adjacent cells. They consist of connexons, which are hexameric protein complexes formed by connexin proteins. These connexons bind to each other, creating channels called gap junction channels. These channels enable the passage of ions, small molecules, and electrical signals between cells, facilitating cell-to-cell communication and coordination. Therefore, the correct answer is gap junctions.

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  • 30. 

    The _____ contains both desmosomes and gap junctions.

    Correct Answer
    heart
    Explanation
    The heart contains both desmosomes and gap junctions. Desmosomes are specialized cell junctions that provide strong adhesion between cells, allowing them to withstand mechanical stress. Gap junctions, on the other hand, are channels that directly connect the cytoplasm of adjacent cells, allowing for rapid communication and coordination of electrical signals. The presence of both desmosomes and gap junctions in the heart is essential for maintaining the structural integrity of the cardiac tissue and facilitating synchronized contraction of the heart muscle.

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  • 31. 

    True or False. Replication creates copies of genetic material.

    Correct Answer
    true
    Explanation
    Replication is the process by which DNA molecules are copied to produce identical copies. During replication, the two strands of the DNA molecule separate, and each strand serves as a template for the synthesis of a new complementary strand. This results in the creation of two identical copies of the genetic material. Therefore, the statement "Replication creates copies of genetic material" is true.

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  • 32. 

    True or False.Transcription changes DNA to RNA.

    Correct Answer
    true
    Explanation
    Transcription is the process by which DNA is converted into RNA. During transcription, an enzyme called RNA polymerase binds to the DNA and synthesizes a complementary RNA molecule based on the DNA template. This RNA molecule is then used as a template for protein synthesis in a process called translation. Therefore, the statement "Transcription changes DNA to RNA" is true.

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  • 33. 

    ______ changes mRNA to polypeptides.

    Correct Answer
    translation
    Explanation
    Translation is the process in which mRNA (messenger RNA) is used as a template to synthesize polypeptides or proteins. During translation, the ribosomes read the mRNA sequence and assemble the corresponding amino acids in the correct order to form a polypeptide chain. This process occurs in the cytoplasm of the cell and is essential for protein synthesis. Therefore, the correct answer is "translation."

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  • 34. 

    True or False.RNA correlates to deoxyribose, and DNA correlates to ribose.

    Correct Answer
    false
    Explanation
    The statement in the question is false. RNA actually correlates to ribose, not deoxyribose. Ribose is a sugar molecule that is found in RNA, while deoxyribose is found in DNA. Therefore, the correct correlation is RNA with ribose and DNA with deoxyribose.

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  • 35. 

    _________ are cystine, thymine, and uracil.

    Correct Answer
    Pyrimidines
    Explanation
    Cystine, thymine, and uracil are all examples of pyrimidines. Pyrimidines are a type of nitrogenous base that is found in nucleotides, which are the building blocks of DNA and RNA. They have a single-ring structure and are essential for the synthesis of genetic material. Cystine is a non-standard pyrimidine that is formed by the oxidation of two molecules of cysteine, while thymine and uracil are standard pyrimidines that are involved in DNA and RNA synthesis, respectively. Therefore, the correct answer is pyrimidines.

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  • 36. 

    Purines are ________ and _______.

    Correct Answer
    adenine and guanine
    Explanation
    Purines are organic compounds that are commonly found in DNA and RNA. Adenine and guanine are two of the four nitrogenous bases that make up the building blocks of DNA and RNA. They are classified as purines due to their specific chemical structure, which includes a double-ring structure. Adenine and guanine play crucial roles in the genetic code and are involved in the formation of the DNA double helix.

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  • 37. 

    Which of the following pairings are false?

    • A.

      A-T

    • B.

      C-G

    • C.

      G-C

    • D.

      A-U

    • E.

      A-G

    Correct Answer
    E. A-G
    Explanation
    The pairing A-G is false because in DNA, adenine (A) always pairs with thymine (T), not guanine (G). Therefore, A-G is an incorrect pairing.

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  • 38. 

    A molecule that contains polar and nonpolar regions is considered __________.

    Correct Answer
    amphipathic
    Explanation
    A molecule that contains both polar and nonpolar regions is considered amphipathic. This means that it has both hydrophilic (water-loving) and hydrophobic (water-repelling) properties. The polar region of the molecule interacts with water molecules, while the nonpolar region avoids water. This property is important for molecules like phospholipids, which make up cell membranes. The polar head of the phospholipid interacts with the watery environment inside and outside the cell, while the nonpolar tails form a hydrophobic barrier in the middle of the membrane.

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  • 39. 

    Collagen, an example of a _____ protein, has extended, elongated strands that function in structure or contraction.

    Correct Answer
    fibrous
    Explanation
    Collagen is an example of a fibrous protein because it has extended, elongated strands that provide structural support and contribute to contraction in various tissues and organs of the body. Fibrous proteins, such as collagen, have a long, thread-like structure and are typically involved in maintaining the shape and integrity of cells and tissues. They often form strong, insoluble fibers that provide strength and stability to connective tissues, tendons, ligaments, and other structures in the body.

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  • 40. 

    Myoglobin, an example of a ____ protein, is coiled, foiled, irregular, and bulky.

    Correct Answer
    globular
    Explanation
    Myoglobin is an example of a globular protein because it has a compact, spherical shape. Globular proteins are typically folded into a three-dimensional structure, allowing them to perform specific functions such as binding and transporting molecules. The coiled, foiled, irregular, and bulky nature of myoglobin further supports its classification as a globular protein.

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  • 41. 

    _______ membrane proteins are located within lipid bilayer.

    Correct Answer
    Integral
    Explanation
    Integral membrane proteins are located within the lipid bilayer because they have hydrophobic regions that interact with the hydrophobic tails of the lipid molecules. This allows them to be embedded and firmly anchored within the bilayer. These proteins play crucial roles in various cellular processes such as transport of molecules across the membrane, cell signaling, and structural support. Their integral nature ensures that they are tightly associated with the lipid bilayer and cannot be easily removed without disrupting the membrane structure.

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  • 42. 

    _________ proteins span the bilayer, and is exposed to the ECF.

    Correct Answer
    Transmembrane
    Explanation
    Transmembrane proteins are a type of integral membrane proteins that span the entire lipid bilayer of a cell membrane. They have regions that are exposed to both the extracellular fluid (ECF) and the intracellular fluid. Therefore, the correct answer is "Transmembrane" as it accurately describes the proteins that span the bilayer and are exposed to the ECF.

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  • 43. 

    All are true for the plasma membrane except

    • A.

      A lipid, bilayer

    • B.

      Covers epithelial layer

    • C.

      Mechanical barrier

    • D.

      Separates ICF and ECF

    • E.

      Selectively permeable

    Correct Answer
    B. Covers epithelial layer
    Explanation
    The plasma membrane is a lipid bilayer that acts as a mechanical barrier, separating the intracellular fluid (ICF) from the extracellular fluid (ECF). It is also selectively permeable, allowing certain substances to pass through while restricting others. However, it does not cover the epithelial layer. The plasma membrane is present in all cells and surrounds the entire cell, not just the epithelial layer.

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  • 44. 

    Gap junctions are specialized channels formed by membrane proteins called _____________

    Correct Answer
    connexins
    Explanation
    Gap junctions, on the other hand, are specialized channels formed by membrane proteins called connexins, which allow for direct communication and exchange of small molecules between adjacent cells. Therefore, the correct answer is not desmosome.

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  • 45. 

    ______ has both fibrous and globular proteins.

    Correct Answer
    Myosin
    Explanation
    Myosin is a protein that is found in both fibrous and globular forms. Fibrous proteins are elongated and have a structural role, while globular proteins are compact and have functional roles. Myosin is a fibrous protein that is responsible for muscle contraction and movement. It forms thick filaments in muscle fibers and interacts with actin, another protein, to generate force and enable muscle contraction. Therefore, myosin is the correct answer to the question.

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  • 46. 

    Which type of proteins works as chemical messengers for the ICF?

    Correct Answer
    globular
    Explanation
    Globular proteins are a type of protein that are folded into a compact, spherical shape. They are commonly found in the cytoplasm of cells and are involved in various cellular processes. One of their functions is to act as chemical messengers within the intracellular fluid (ICF). These proteins can transmit signals and relay information between different parts of the cell, helping to regulate cellular activities and maintain homeostasis. Therefore, globular proteins are the correct answer as they serve as chemical messengers for the ICF.

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  • Jun 26, 2024
    Quiz Edited by
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