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Q2 - Mitos/DNA/Meios
Quarter 2 - Mitosis, DNA & Protein Synthesis & Meiosis
Term | Definition |
---|---|
Anaphase | A stage in cell division where chromosomes are pulled apart to opposite ends of the cell. |
Cancer | Uncontrolled cell growth that can lead to tumors and spread through the body. |
Carcinogen | A substance that can cause cancer by damaging DNA. |
Cell Cycle | The life cycle of a cell, including growth, DNA replication, and division. |
Cell Plate | A structure that forms in plant cells during cell division to help separate the two new cells. |
Centromere | The part of a chromosome that links sister chromatids and where spindle fibers attach. |
Centrosome | An organelle that organizes spindle fibers for chromosome movement during cell division. |
Checkpoint | Points in the cell cycle where the cell checks if it's ready to proceed to the next stage. |
Chromosome | A structure made of DNA that contains genes, found in the nucleus of cells. |
Cleavage Furrow | A groove that forms as animal cells divide, helping to split the cell into two. |
Cytokinesis | The process where the cytoplasm divides, creating two new cells. |
Cytoplasm | The fluid inside a cell that surrounds organelles. |
Daughter Cell | The new cells formed after cell division. |
Differential Gene Expression | The process by which cells express different sets of genes to become specialized. |
Differentiation | The process by which cells become specialized for specific functions. |
Diploid | A cell with two sets of chromosomes, one from each parent. |
DNA (Deoxyribonucleic Acid) | The molecule that contains genetic instructions for life. |
Egg Cell | A female reproductive cell that can be fertilized by a sperm cell. |
Embryo | An early stage of development after fertilization. |
Fertilize | The process of a sperm cell joining with an egg cell to form a new organism. |
Gap 1 (G1) | A phase in the cell cycle where the cell grows and carries out normal functions. |
Gap 2 (G2) | A phase in the cell cycle where the cell prepares for division. |
Gene | A section of DNA that provides instructions for making a protein. |
Genome | The complete set of genetic material in an organism. |
Growth | An increase in cell size or number, leading to organismal development. |
Haploid | A cell with one set of chromosomes, like sperm and egg cells. |
Interphase | The part of the cell cycle when the cell grows, replicates DNA, and prepares for division. |
Maintenance | The processes cells perform to stay healthy and functional. |
Metaphase | A stage in cell division where chromosomes line up in the center of the cell. |
Mitosis | A type of cell division that creates two identical cells from one parent cell. |
Mitotic Phase (M) | The phase in the cell cycle when the cell divides its nucleus and cytoplasm. |
Multicellular | An organism made of multiple cells. |
Nucleus | The cell structure that holds DNA. |
Parent Cell | The original cell that divides to form two new cells. |
Prophase | A stage in cell division where chromosomes become visible and the nuclear membrane breaks down. |
Protein | Molecules made of amino acids that perform many functions in cells. |
Replication | The process of copying DNA so each new cell has a complete set. |
Sister Chromatid | Each half of a duplicated chromosome, which separates during cell division. |
Somatic Cell | Any cell in the body that is not a sperm or egg cell. |
Sperm Cell | A male reproductive cell that can fertilize an egg cell. |
Spindle Fibers | Structures that help separate chromosomes during cell division. |
Stem Cell | A cell that can develop into different cell types. |
Synthesis Phase (S) | The phase in the cell cycle where DNA is replicated. |
Telophase | The final stage of cell division where two new nuclei form. |
Tumor (Benign and Malignant) | A mass of cells; benign tumors don’t spread, while malignant tumors can spread. |
Unicellular | An organism made of only one cell. |
Adenine | A base in DNA and RNA that pairs with thymine in DNA and uracil in RNA. |
Amino Acid | The building blocks of proteins, like the pieces of a puzzle. |
Anticodon | A set of three bases on tRNA that matches with a codon on mRNA during protein synthesis. |
Base | The parts of DNA and RNA that hold the genetic code (adenine, thymine, cytosine, guanine, and uracil). |
Cell | The smallest unit of life that makes up all living things. |
Chromosome | A structure made of DNA that contains genes, found in the nucleus of cells. |
Codon | A group of three bases on mRNA that codes for one amino acid. |
Cytoplasm | The jelly-like fluid inside a cell where cell processes happen. |
Cytosine | A base in DNA and RNA that pairs with guanine. |
Deoxyribose | The sugar found in DNA molecules. |
DNA (Deoxyribonucleic Acid) | The molecule that carries genetic instructions for life. |
Endoplasmic Reticulum (Smooth & Rough) | Cell structures where materials are made; rough ER has ribosomes, and smooth ER does not. |
Gene | A section of DNA that contains instructions to make a protein. |
Golgi Apparatus | A cell structure that packages and ships proteins and other materials. |
Guanine | A base in DNA and RNA that pairs with cytosine. |
Hydrogen Bond | A weak bond between bases in DNA that holds the strands together. |
mRNA (Messenger RNA) | A molecule that carries genetic information from DNA to ribosomes for protein making. |
Mutation | A change in the DNA sequence that can alter how a gene works. |
Nuclear Membrane | A barrier around the nucleus that protects the DNA inside. |
Nucleic Acid | Molecules like DNA and RNA that store and transfer genetic information. |
Nucleotide | The building blocks of DNA and RNA, made of a sugar, a phosphate, and a base. |
Nucleus | The part of a cell where DNA is stored and protected. |
Peptide Bond | The link between amino acids in a protein. |
Phosphate | A part of DNA and RNA that helps form their structure. |
Polypeptide | A chain of amino acids that becomes a protein. |
Protein Synthesis | The process of making proteins in cells using DNA instructions. |
Ribose | The sugar found in RNA molecules. |
Ribosome | The part of a cell where proteins are made. |
RNA | A molecule that helps make proteins using the instructions in DNA. |
rRNA (Ribosomal RNA) | A type of RNA that makes up ribosomes. |
Start Codon | The codon (AUG) that signals where protein synthesis begins. |
Stop Codon | A codon that signals the end of protein synthesis. |
Thymine | A base in DNA that pairs with adenine (replaced by uracil in RNA). |
Transcription | The process of copying DNA into mRNA. |
Translation | The process of making proteins from mRNA at a ribosome. |
tRNA (Transfer RNA) | A molecule that brings amino acids to the ribosome during protein synthesis. |
Uracil | A base in RNA that pairs with adenine (replaces thymine from DNA). |
Vesicle | A small bubble in cells that transports materials. |
Allele | alternate forms of a gene, like blue or black eye colors. |
Cellular Division | When a cell splits to form new cells. |
Centromere | The part of a chromosome that holds two chromatids together. |
Chromatid | One half of a duplicated chromosome. |
Chromosome | A structure made of DNA that contains genes. |
Codon | A group of three RNA bases that codes for one amino acid (found on a chart for decoding). |
Crossing Over | When chromosomes exchange pieces during meiosis to create genetic diversity. |
Daughter Cell | A new cell made from cell division. |
Deletion | A mutation where part of the DNA is missing. |
Diploid | A cell with two sets of chromosomes (one from each parent). |
DNA (Deoxyribonucleic Acid) | The molecule that stores genetic instructions. |
Egg Cell | A female reproductive cell. |
Epigenetic | Changes in the genes that are expressed in a cell which alters the functionality of a cell. |
Fertilization | When a sperm cell joins with an egg cell to form a zygote. |
Frameshift | A mutation that shifts the way DNA is read by adding or deleting bases. |
Gamete | A reproductive cell (sperm or egg). |
Gene | A section of DNA that contains instructions to make a protein. |
Gene Expression | The process of using a gene to make a protein. |
Gene Mutation | A change in the DNA sequence of a gene. |
Genetic Code | The set of rules used to translate DNA or RNA into proteins. |
Genetic Variation | The differences in genes between individuals that make everyone unique. |
Genome | The complete set of DNA in an organism. |
Haploid | A cell with one set of chromosomes, like gametes. |
Homologous Chromosome | A pair of chromosomes, one from each parent , that have the same genes. |
Independent Assortment | The random way chromosomes are distributed during meiosis, creating genetic diversity. |
Inherited | Traits or genes passed down from parents to offspring. |
Insertion | A mutation where extra DNA is added. |
Meiosis | A special kind of cell division that makes gametes with half the usual number of chromosomes. |
Meiosis I | The first stage of meiosis where homologous chromosomes separate. |
Meiosis II | The second stage of meiosis where sister chromatids separate. |
Monosomy | When a cell has only one chromosome instead of a pair. |
Multicellular | An organism made of many cells. |
Mutagen | Something that causes mutations, like radiation or chemicals. |
Mutation | A change in the DNA sequence. |
Nondisjunction | A mistake in meiosis where chromosomes don’t separate properly causing missing or extra chromosomes in the egg or sperm. |
Offspring | The "children" of a parent organism. |
Parent | An organism that produces offspring. |
Parent Cell | The original cell before it divides. |
Point Mutation | A mutation where one DNA base is changed. |
Replication | The process of copying DNA. |
Sexual Reproduction | The process of combining sperm and egg cells to create offspring. |
Somatic Cell | Any body cell that is not a sperm or egg cell. |
Sperm Cell | A male reproductive cell. |
Substitution | A mutation where one DNA base is replaced with another. |
Trait | A characteristic, like eye color, determined by genes. |
Trisomy | When a cell has three copies of a chromosome instead of two. |