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Biology Section 5 Cellular Structure of the Plant Kingdom Biology 5.5: Nucleus ICan2Ed, Inc. All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. The large, usually round, organelle of a cell is the n______. DNA, the genetic material that controls the activity of the cell, is located in the n______. The nucleus is a membraneenclosed o________ found in animal and plant kingdom (eukaryotic) cells. 1 Biology breaks cell types into eukaryotic (those with a defined n______) and prokaryotic (those with no defined n______). The nucleus is not always in the center of the cell. The big dark spot somewhere in the cytoplasm is the n______. The membrane-bound organelle around which other parts are grouped or gathered is the n_______. All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. DNA, the genetic material that controls the activity of the cell, is located in the n______. 2 Nuclear envelope is another name for the nuclear m_______ of the nucleus. The outer cover of the nucleus is called the n______ m_______ or the n______ e_________. A nuclear m________, also known as the nuclear e________, is a double lipid bilayer that encloses the genetic material (DNA) in eukaryotic cells. The nuclear membrane also serves as a physical barrier, separating the genetic contents of the nucleus (______) from the cytoplasm. All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. 3 DNA, the genetic material that controls the activity of the cell, is located in the n______. Nuclear envelope is another name for the nuclear m_______ of the nucleus. The outer cover of the nucleus is called the n______ m_______ or the n______ e_________. The nucleus is filled with a fluid called nucleoplasm. The organelles of the nucleus float in the fluid known as n________. Like cytoplasm, n______ allows nutrient molecules to move to the organelles. 4 Like cytoplasm, the nucleoplasm supports and protects the o_______ of the n______. Nutrients and fluids move into and out of the nucleus through nuclear pores. The nucleus transports substances through the n_____ p_____. Substances and waste products are transported between the cytoplasm of the cell and the nucleoplasm of the nucleus through the n______ p_____. All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. DNA, the genetic material that controls the activity of the cell, is located in the n______. 5 Nuclear envelope is another name for the nuclear m_______ of the nucleus. The outer cover of the nucleus is called the n______ m_______ or the n______ e_________. Like cytoplasm, n______ allows nutrient molecules to move to the organelles. Substances and waste products are transported between the cytoplasm of the cell and the nucleoplasm of the nucleus through the n______ p_____. The largest organelle floating in the nucleus is the nucleolus. The round granular structure within the nucleus of a cell is the n________. 6 A non-membrane bound structure composed of proteins and nucleic acids found within the nucleus of cells is called the n________. A small rounded body within a nucleus that contains RNA and proteins and is involved in the production of ribosomes is known as the n______. The organelle of the nucleus that plays an important part in the synthesis of ribonucleic acid (RNA) and protein is the n_______. All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. 7 DNA, the genetic material that controls the activity of the cell, is located in the n______. Nuclear envelope is another name for the nuclear m_______ of the nucleus. The outer cover of the nucleus is called the n______ m_______ or the n______ e_________. Like cytoplasm, n______ allows nutrient molecules to move to the organelles. Substances and waste products are transported between the cytoplasm of the cell and the nucleoplasm of the nucleus through the n______ p_____. 8 A non-membrane bound structure composed of proteins and nucleic acids found within the nucleus of cells is called the n________. A small rounded body within a nucleus that contains RNA and proteins and is involved in the production of ribosomes is known as the n______. Chromatin is the combination of DNA and proteins that make up the contents of the nucleus of a cell. The contents in the nucleus that forms the DNA is the c______. The coiled fibers that form the rod-like chromosomes of DNA are the c_______. 9 The mass of genetic material composed of DNA and proteins that condense to form chromosomes is the c______. The substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division is known as c______. DNA winds itself around proteins called histones, thereby forming a complex known as c_______. All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. DNA, the genetic material that controls the activity of the cell, is located in the n______. Nuclear envelope is another name for the nuclear m_______ of the nucleus. 10 The outer cover of the nucleus is called the n______ m_______ or the n______ e_________. Like cytoplasm, n______ allows nutrient molecules to move to the organelles. Substances and waste products are transported between the cytoplasm of the cell and the nucleoplasm of the nucleus through the n______ p_____. A non-membrane bound structure composed of proteins and nucleic acids found within the nucleus of cells is called the n________. The substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division is known as c______. 11 Review All cells of the plant kingdom have a nucleus as one of the most important organelles (little organs). The second largest organelle of the plant cell is the n______. DNA, the genetic material that controls the activity of the cell, is located in the n______. Nuclear envelope is another name for the nuclear m_______ of the nucleus. The outer cover of the nucleus is called the n______ m_______ or the n______ e_________. Like cytoplasm, n______ allows nutrient molecules to move to the organelles. Substances and waste products are transported between the cytoplasm of the cell and the nucleoplasm of the nucleus through the n______ p_____. A non-membrane bound structure composed of proteins and nucleic acids found within the nucleus of cells is called the n________. A small rounded body within a nucleus that contains RNA and proteins and is involved in the production of ribosomes is known as the n______. The substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division is known as c______. DNA winds itself around proteins called histones, thereby forming a complex known as c_______. 12