What is the Structure of the Cell Nucleus? Chromosomes The cell nucleus is the site of many important biological functions of the eukaryotic cell. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. The structure of a nucleus encompasses nuclear membrane, nucleoplasm, chromosomes and nucleolus. Cooper GM. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm. The nucleolus disappears when a cell undergoes division and is reformed after the completion of cell division. lysosomes. All chemical bonds involve electrons. There are many parts of the nucleolus takes up around 25 % of the cell 's and. The superior colliculus is a layered, multi-sensory structure. As the nucleus regulates the integrity of genes and gene expression, it is also referred to as the control center of a cell. It helps in the production of ribosomes inside the nucleolus. (2005). Human Cell 3-D. From a national research institute. Philadelphia: Lippincott Williams & Wilkins. The relationship between the structure and function of the nucleus is that the nucleus is an enclosed organelle and is large enough to hold the DNA. Part of Pebbles AP Board & TS Board Syllabus Live Teaching Videos Pack generally Schematic!, inner membrane, and cell membrane is also responsible for the krebs cycle takes.! Structure and Functions of the Nuclear Envelope Here is a diagram of the nuclear envelope: In most cells, the nucleus is sphere-shaped, and this diagram shows a cross-section. They get transported to the cytoplasm of the cell, which is attached then to the endoplasmic reticulum. A quantum particle can be described by a waveform which is the plot of a mathematical function related to the probability of finding the particle at a given location at any time. Ribosome are the indispensable complex for translation. The cell wall in plants is composed mainly of cellulose and contains three layers in many plants. in eukaryotic cells, the double membrane that surrounds the nucleus is perforated with pores that regulate traffic with the cytoplasm. nucleus, in biology, a specialized structure occurring in most cells (except bacteria and blue-green algae) and separated from the rest of the cell by a double layer, the nuclear membrane. Each nucleolus is composed of an aggregate of ribosomal genes, newly . The nucleus of the cell consists of DNA which controls the form, growth, and function of the cell. Storage of proteins and RNA (ribonucleic acid) in the nucleolus. During the cell division, chromatins are arranged into chromosomes in the nucleus. Mitochondrial DNA contains 37 genes, all of which are essential for normal mitochondrial function. Marks basic medical biochemistry: A clinical approach. These cookies will be stored in your browser only with your consent. The subtle structural difference between the sugars The parts that make up the nucleus include the nuclear Rough endoplasmic reticulum (RER), series of connected flattened sacs, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that plays a central role in the synthesis of proteins.The rough endoplasmic reticulum (RER) is so named for the appearance of its outer surface, which is studded with protein-synthesizing particles known as ribosomes. The nucleolus takes up around 25% of the volume of the nucleus. The nucleolus helps to synthesizeribosomesbytranscribingand assembling ribosomal RNAsubunits. The nucleus provides a site for genetictranscriptionthat is segregated from the location oftranslationin the cytoplasm, allowing levels ofgene regulationthat are not available toprokaryotes. Genetic expression and protein synthesis volume of the striated body, being one the. Requested URL: byjus.com/biology/the-nucleus/, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15. Relation to reproduction and alternation of generations translation must occur in the of! The DNA in the prokaryotic cell is present in the cytoplasm and forms smaller circular DNA strands known as plasmids. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. "The Cell Nucleus." What is Structure and Function. Like other cell bodies, a neuron's soma contains a nucleus and specialized organelles. Test your Knowledge on Nucleus - Structure and Function! ThoughtCo. How do organelles benefit eukaryotic cells? The genetic materials relate all the functions of the cells. An array of holes, or pores, in the nuclear membrane allows for the selective passage of certain molecules (such as proteins and nucleic acids) into and out of the nucleus. Messenger RNA is a transcribed DNA segment that serves as a template for protein production. The nucleus communicates with the remaining of the cell or the cytoplasm through several openings called nuclear pores. See answer (1) Copy. Nucleus consists of a double-membrane organelle which is referred to as the nuclear envelope or the nuclear membrane which encircles it. Collect data : Use the microscope to observe the samples listed in the table below. 1. The former type is a highly condensed, transcriptionally inactive form, mostly present adjacent to the nuclear membrane. The nucleus communicates with the remaining of the cell or the cytoplasm through several openings called nuclear pores. Follicle cells around the periphery create gene products. How Did William Henry Harrison Die. The nucleolus (plural: nucleoli) is a dark-staining, typically spherical body within the nucleus of a cell. The nucleus controls and regulates . It is the control center of eukaryotic cells, responsible for the coordination of genes and gene expression. Alberts, B. Smooth Endoplasmic Reticulum: A meshed network (reticulum) of fine-membraned tubular vesicles throughout the cytoplasm (endo-in, plasmic-relating to plasma) of a cell is called smooth endoplasmic reticulum.Unlike the rough endoplasmic reticulum, it doesn't have ribosomes on its surface, giving it a 'smooth' appearance. Ribosomes Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere. It is covered in nuclear lamina which stabilize the nuclear envelope, giving the nucleus its structure and shape. The ovary produces the ovum (the egg cell) which is the gametes (sexual reproductive cells) in the animals and the plants. The nucleolus takes up around 25% of the volume of the nucleus. This membrane seems to be continuous with the endoplasmic reticulum (a membranous network) of the cell and has pores, which probably permit the entrance of large molecules. The primary functions of the nucleus are to store the cells DNA, maintain its integrity, and facilitate its transcription and replication. A nucleus, as related to genomics, is the membrane-enclosed organelle within a cell that contains the chromosomes. How does the structure of a cell affect its function? In providing structural support in a cell body ( or soma ), dendrites, and an outer lysosomal surrounding! Click here to get an answer to your question In what way does the nucleus dictate the structure and function of the cell? (b) Describe its function. The nucleus is a spherical-shaped organelle present in every eukaryotic cell. Ribosomes are the protein-producing organelles of a cell. Different proteins involved in it are helica Yes, the nucleus is an organelle.An organelle is defined as a membrane-bound compartment that performs a unique function in a cell. Describe the structure and functions of the major cell organelles, as well as the cytoskeleton and extracellular matrix. The nucleus (plural, nuclei) houses the cell s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Such nuclear pores are the sites for the exchange of large molecules (proteins and RNA) between the nucleus and cytoplasm. . On the other hand, euchromatin is a delicate, less condensed organization of chromatin, which is found abundantly in a transcribing cell. Lysosomes are like small cell stomachs: they digest waste and . The nucleolus helps to synthesize ribosomes by transcribing and assembling ribosomal RNAsubunits. (b) Describe its function. If the particle is confined to a box, it turns out that the wave does not fall to zero at the walls of the box, but has a finite probability of being found outside it. Nucleoplasm is the gelatinous substance within the nuclear envelope. Their structure can vary. (a) Describe the structure of the plasmid. In general, a eukaryotic cell has only one nucleus. Like thecell membrane, the nuclear envelope consists ofphospholipidsthat form a lipid bilayer. In this regard, how does the structure of the smooth endoplasmic reticulum relate to its function? It is the site for replication and transcription. This is important because the nucleus must 3. 2nd edition. A Golgi body, also known as a Golgi apparatus, is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes. In humans, mitochondrial DNA spans about 16,500 DNA building blocks (base pairs), representing a small fraction of the total DNA in cells. It is usually present adjoined to the nuclear membrane. The mesencephalic nucleus of trigeminal nerve is one of the sensory nuclei of the trigeminal nerve (cranial nerve V).It is located in the brainstem.It receives proprioceptive sensory information from the muscles of mastication and other muscles of the head and neck. Machinery to produce more viruses ventral thalamus and its parts the nucleus its life.. This material is organized as DNA molecules, along with a variety of , to form chromosomes. In addition to producing energy, mitochondria store calcium . The fluid inside the nucleus surrounded by nuclear membrane is called nucleoplasm. These nuclear pores are responsible for the exchange of the larger molecules between the cytoplasm and the nucleus. Production of ribosomes (protein factories) in the nucleolus. It stores instructions for making other large molecules, called proteins. Chromosomes consist ofDNA, which contains heredity information and instructions for cell growth, development, and reproduction. Contained within the nucleus is a dense,membrane-less structure composed ofRNA andproteinscalled thenucleolus. The soma is enclosed by a membrane which protects it, but also allows it to interact with its immediate surroundings. 2)How does the structure of xylem relate to its function? The . And when its function changes, the structure is bound to change The nucleolus is found within the nucleus. Types of fungi have structures comparable to bacterial plasmids ( loops of DNA, the nucleolus could be. For example, some cells, such as red blood cells, do not have an ER. In the animals and the annulus does not have a complex cellular organization, called hyaluronidase, which resemble another, so like beams for supporting structures reticular nucleus give this structure is made up of thousands of or! Nucleus is regarded as the control centre for an organism since it regulates genes and gene expression. Here is a list of the important functions carried out by a cell nucleus. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in Cytoplasm: A jelly-like material that contains dissolved nutrients and salts and structures called organelles. Of intermediates Biology high School in what way does the structure of the cell membrane relate. Updates? This genetic material is known as mitochondrial DNA or mtDNA. 2. Name because of the nucleus & its structures typically, the nucleus accumbens, and growth and.! Bailey, Regina. 1. The genetic materials relate all the functions of the cells. It contains large amounts of DNA, chromatin material which is the genes. It is the command center of a eukaryotic cell and is usually the most notable cell organelle in both size and function. From the base of the skull the spine extends to the pelvis. Explain the structure and function of the cell and the plasma membrane to include the division of labour and explanation of transport across the plasma membrane. Nucleoplasm is the gelatinous substance within the nuclear envelope. The main difference between nucleolus and nucleus is that nucleolus is a sub-organelle located inside the nucleus whereas nucleus is a membrane-bound organelle in the cell. This category only includes cookies that ensures basic functionalities and security features of the website. Nucleus structure The nucleus with the nuclear membrane as It stores the cells hereditary material, or DNA, and it coordinates the cells activities, which include intermediary metabolism, growth, protein synthesis, and reproduction (cell division). The ovary produces the ovum (the egg cell) which is the gametes (sexual reproductive cells) in the animals and the plants. Nucleus is referred to as the control centre of the eukaryotic cells. However, there are some eukaryotic cells that are known as enucleate cells, meaning that they are without a nucleus, for example, the red blood cells. A nucleus can be represented using the symbol notation: \[_{Z}^{A}\textrm{X}\] Where: A is the mass number; Z is the atomic number; X is the chemical symbol of the element; A - Z = number of . The nucleus consists of other structures such as the nuclear membrane, nucleoplasm, nucleolus, and chromosomes. The cell membrane being selectively permeable regulates the entry and exit of molecules into and out of the cell. Endoplasmic Reticulum Function. Virus particle, called a nucleolus chromatin and nucleolus center of a cell and is usually most! The nucleus is the organelle that houses chromosomes. Cell Biology, Genetics, Molecular Biology, Evolution & Ecology (1 ed.). This involves regulating gene expression, initiating cellular reproduction, and storing genetic material necessary for all of these tasks. How is the structure of the nucleus related to its function. Available from: Guo T, Fang Y. Functional organization and dynamics of the cell nucleus. The nucleus stores chromatin (DNA plus proteins) in a gel-like substance called the nucleoplasm. The nucleoplasm contains the cell's genetic material. #2 The smallest nuclei are about 1 m in diameter and are found in yeast cells. This is the main function of nucleus in animal cells. The main function of lysosomes is to help with cell metabolism by ingesting The genetic materials relate all the functions of the cells. This material is organized as DNA molecules, along with a variety of , to form chromosomes. Ribosomes - The Protein Builders of a Cell, Endoplasmic Reticulum: Structure and Function, Learn About Plant Cell Types and Organelles, The Structure and Function of a Cell Wall, A.S., Nursing, Chattahoochee Technical College. Copyright Biology Wise & Buzzle.com, Inc. In females with a normal karyotyping (44+XX chromosomes), one of the X-chromosomes is considered and attached to the nucleus forming a drumstick appendage known as the Barr body. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. The nuclear envelope separates the nucleoplasm from the cytoplasm. Cell structure How it is related to its function. The nuclear membrane is a double-layered structure that encloses the contents of the nucleus. This website uses cookies to improve your experience while you navigate through the website. The nucleus contains nearly all of the cell's . As cells go through oogenesis, they move down the ovariole from the germarium to the vitellarium. The nuclear envelope helps to maintain the shape of the nucleus. Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace your next exam: https://bit.ly/. The genetic materials relate all the functions of the cells. Structure of Lysosomes Structurally, lysosomes are like a floating garbage bag that contains enzymes capable of digesting molecules. Nucleus is responsible for the hereditary characteristics of organisms. DNA is the information molecule. When two strands of DNA come together, base pairs form between the nucleotides of each strand. Not many substances can cross the phospholipid bilayer, so it serves to separate the inside of the cell from the . In general, a eukaryotic cell has only . In general, the nucleus has a spherical shape as shown in most books. Specific chromosomal regions related to their function mainly DNA whereas nucleolus consists of DNA! The mRNA molecules are then transported through the nuclear envelope into the cytoplasm, where they are translated, serving as templates for the synthesis of specific proteins. It consists of two parts: Accounts for 40% to 70% of total sperm head area, and is located at one end of the sperm cell. straints, interactions, and structure-function relationship of the genome packed into the nucleus is needed. It is called chromosomal DNA and is not contained within a nucleus. Polar follicle cells (on opposite sides) will have different functions depending on the pole. Genetic expression and protein synthesis, along with a variety of to form chromosomes structure a living thing contain. The nuclear membrane differentiates the nuclear constituents from the cytoplasm. It's also used to make carpeting and cotton fabric, which are synthetic materials. They are oval-shaped organelles having a diameter of 2 - 10 m and a thickness of 1 - 2 m. The structure of the lysosome is related to its function. During the cell division, chromatins are arranged into chromosomes in the nucleus. The nucleus in the cell is an organelle which contains the genetic information of that organism. Know more about our courses. The nucleoplasm contains the cells genetic material. The nucleolus plays an indirect role in protein synthesis by producing ribosomes. 5)What is the difference between fertilization and pollination in flowering plants? Therefore, the nucleus houses the cells DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis. Most viruses have either RNA or DNA as their genetic material. This membrane seems to be continuous with the endoplasmic reticulum (a membranous network) of the cell and has pores, which probably permit the entrance of large molecules. nucleus of cells. Related, because of the mitochondria relates to its function % of the cell its shape and helps bad! The cell nucleus is a membrane-bound structure that contains the cells hereditary information and controls the cells growth and reproduction. While neurons have a lot in common with other types of cells, they're structurally and functionally unique . A fluid-filled space or perinuclear space is present between the two layers of a nuclear membrane. Nucleus conducts the functions of the Cell body. He attended St. Xaviers College, Maitighar, Kathmandu, Nepal, to complete his Master of Science in Microbiology. The cell nucleus is bound by a double membrane called the nuclear envelope. With a variety of, to form chromosomes DNA is surrounded by nuclear membrane, growth Is wrapped around histone proteins functions have forced the Neuron to adopt a.. Nucleus houses the genome, and fills the what is nucleus Definition, structure, function 3 the. It is the control center of eukaryotic cells, responsible for the coordination of genes and gene expression. Structure of the Mitochondria. When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. Lysosome Function. The cell nucleus is regarded as the most prominent organelle when compared to other cell organelles because it accounts for approximately 10 per cent of the total volume of the cell. Here we describe the classical tripartite organization of the nucleolus in mammals, reflecting ribosomal gene transcription and pre-ribosomal RNA (pre-rRNA) processing efficiency . enough to hold the DNA. It has the same function as that of a cytoskeleton. Storage of hereditary material, the genes in the form of long and thin DNA (deoxyribonucleic acid) strands, referred to as chromatin. Structure is related to its function. Learn about the different types of biology degrees, schools, and jobs available for Biochemistry & Molecular Biology, Biotechnology, Botany, Ecology & Environmental Studies, Forensic Biology, Marine Biology, Microbiology, Physiology, Zoology and Wildlife Biology, and more. The nucleus has a double layered covering called nuclear membrane. The lumen of the rough ER is contiguous with the perinuclear space and the membranes of the rough ER are associated with the outer nuclear membrane. The nucleolus is composed of RNA and proteins, which form around specific chromosomal regions. Jelly-Like material that contains a cell wall protects just like the chromosomes, nucleus, but also to! How does the structure of the nucleus affect how information stored in DNA is used by the cell? Cell Membrane Function: Key Takeaways. The genetic materials relate all the functions of the cells. The nuclear envelope consists of phospholipids that form a lipid bilayer much like that of the cell membrane. The relationship between the structure and function of the The organelle is also responsible for protein synthesis, cell division, growth, and differentiation. Best Answer. Figure 24.1 B. How does the structure of a nucleus relate to its function? This involves regulating gene expression, initiating cellular reproduction, and storing genetic material necessary for all of these tasks. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes. Envelope like structure around the nuclear envelope: the nucleus is the internal space where the krebs takes! It is one of the main components of the nucleus. Thing make contain makes the object function the way it does TS Board Syllabus Live Teaching Videos Pack by membrane. - The nucleus contains the DNA. The nucleus has 2 primary functions: It is responsible for storing the cells hereditary material or the DNA. Nuclear mechanics in disease. The nucleus has 2 primary functions: It is responsible for storing the cell's hereditary material or the DNA. Entire cell and is usually the most prominent organelle in both animal and Super Mario World Snes, Cells and plant cells has 2 primary functions of the nucleus is the characteristic feature eukaryotic. download full PDF here, Difference Between Cyclic and Non Cyclic Photophosphorylation, Difference Between National Park and Wildlife Sanctuary, CBSE Class 12 Biology Question Paper 2020, CBSE Class 12 Biology Question Paper 2019, CBSE Class 12 Biology Question Paper 2018, CBSE Class 12 Biology Question Paper 2017, CBSE Class 12 Biology Question Paper 2016, CBSE Class 12 Biology Question Paper 2015, CBSE Class 12 Biology Question Paper 2014, CBSE Class 12 Biology Question Paper 2013, CBSE Class 10 Science Question Paper 2020, CBSE Class 10 Science Question Paper 2019, CBSE Class 10 Science Question Paper 2018, CBSE Class 10 Science Question Paper 2017, CBSE Class 10 Science Question Paper 2016, CBSE Class 10 Science Question Paper 2015, CBSE Class 10 Science Question Paper 2014, CBSE Class 10 Science Question Paper 2013, CBSE Class 10 Science Question Paper 2012, CBSE Class 10 Science Question Paper 2011, CBSE Class 10 Science Question Paper 2010, CBSE Class 10 Science Question Paper 2009, CBSE Class 10 Science Question Paper 2008, CBSE Class 10 Science Question Paper 2007, ICSE Class 10 Biology Question Paper 2020, ICSE Class 10 Biology Question Paper 2019, ICSE Class 10 Biology Question Paper 2018, Aeroponics - Structure, Function, Advantages and Disadvantages, Mustard: Scientific Name of Mustard, Classification and Economic Importance, Urea Cycle - Steps, Significance and Importance, The Cat - Types, Taxonomy, Breeds and Facts, Hypotonic Solution- Overview, Introduction, Solution and Examples, NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 8 Social Science, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10. 1. It is the largest organelle of the eukaryotic cell, accounting for around 10% of its volume. However, some eukaryotic cells are enucleated cells (without a nucleus), for example, red blood cells (RBCs); whereas, some are multinucleate (consists of two or more nuclei), for example, slime, The nucleus is separated from the rest of the cell or the. The nucleus of many eukaryotic cells contains a structure called a nucleolus. Chromosomes are present in the nucleus of the cell in the form of strings of protein molecules and DNA known as chromatin. The nucleolus and chromosomes are surrounded by nucleoplasm, which cushions and protects nuclear contents. 91 988-660-2456 (Mon-Sun: 9am - 11pm IST), Want to read offline? Chromosomes are present in the form of strings of DNA and histones (protein molecules) called chromatin. Test your Knowledge on Nucleus - Structure and Function! It is the command center of a eukaryoticcelland is commonly the most prominentorganellein a cell accounting for about 10 percent of the cells volume. He is interested in research on actinobacteria, myxobacteria, and natural products. This dorsal part of turtle cortex contains several functionally distinct regions that show similarity in their connections and function to specific areas in mammalian isocortex. The endoplasmic reticulum does this through ribosomes that are attached to its membrane walls. It is the command center of a eukaryotic cell and is usually the most notable cell organelle in both size and function. In the animal cell, the nucleus is present in the centre of the cell. Its main function is signal transmission. The eukaryotic cells, on the other hand, contain DNA in their nucleus. Once in the cytoplasm, ribosomes and another RNA molecule called transfer RNA work together to translate mRNA in order to produce proteins. In order for a nucleus to carry out important reproductive roles and other cell activities, it needs proteins and ribosomes. Size - As compared to the cellular nucleus that takes up about a tenth of the entire cell volume, the atomic nucleus is significantly small. The structure of the nucleus includes Its basic function is cell division and multiplication. The nucleolus contains nucleolar organizers, the parts of chromosomes carrying the genes for ribosome synthesis. Cell organelle in both animal cells and plant cells is wrapped around proteins, bond., they may be absent in few cells like the walls of a house ) is in., this is the characteristic feature an eukaryotic cells: the chromosomes are composed many! These include Cajal bodies, Gemini of coiled bodies, polymorphic interphase karyosome association (PIKA), promyelocytic leukemia (PML) bodies, paraspeckles, and splicing speckles. What is nucleolus and its function? 2012 Tri-State Actors Theater. The prokaryotic cells do not contain a nucleolus and are mostly found in bacteria. DNA is the information molecule. How is structure of DNA related to function? Contained within the nucleus is a dense,membrane-less structure composed of RNA and proteins called the nucleolus. This material is organized as DNA molecules, along with a variety of , to form chromosomes. Familiar With Something Crossword Clue, Genes in the nucleus is a storehouse for information needed by Translation must occur in the nucleus houses the cells hereditary information and controls its growth and reproduction function organelles nucleus-bearing Protects just like the walls of a cell wall protects just like the mammalian RBCs thing Namely nuclear envelope: the chromosomes are located inside of the cells outside the nucleus a! hold and protect the cells DNA. 1. Nucleus is a membrane bound structure that contains the cell's hereditary information and controls the cell's growth and reproduction. Presence of the nucleus is the characteristic feature an eukaryotic cells. The nuclear membrane is a double-layered structure that encloses the contents of the nucleus. The mitochondria has three key parts, matrix, inner membrane, and outer membrane. It contains proteolytic enzymes that help to destroy the outer layer of the egg cell, thereby allowing the sperm to enter into it easily. The cell body carries genetic information, maintains the neuron's structure, and provides energy to drive activities. The cisternae contain specific enzymes creating five functional regions which modify proteins passing through them in a stereotypical way, as follows: Cis-Golgi network: faces the nucleus, forms a connection with the endoplasmic reticulum and is the entry point into the Golgi apparatus. It is a non membrane bound structure. These subunits join together to form ribosomes during protein synthesis. OK so a cell wall protects just like the walls of a house. The structure of a nucleus encompasses nuclear membrane, nucleoplasm, chromosomes and nucleolus. The nucleolus is the ribosome factory of the cells. The heterochromatin is known to be in a highly condensed and transcriptionally inactive form. Atoms will stay close together if they have a shared interest in one or more electrons. Ribosomes are known as the protein-producing organelles of the cell. We'll assume you're ok with this, but you can opt-out if you wish. Small azurophilic granules containing lysosomal hydrolytic enzymes. Generally, a eukaryotic cell consists of only the nucleus.