Vocabulary from Mrs. Fisher's Biology Review.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Define: Substrate | the reactant in a chemical reaction upon which an enzyme acts.
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| Define: Photosynthesis | process by which light energy is converted to chemical energy; produces sugar and oxygen from carbon dioxide and water.
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| Define: Homeostasis | equilibrium and stability within an environment (i.e. ecosystem, body).
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| Define: Gamete | a sex cell; egg or sperm.
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| Define: Positive Feedback | control system in which sensory information causes the body to increase the rate of change away from homeostasis.
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| Define: Mitosis | the process by which a cell divides its nucleus and contents.
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| Define: Fertilization | fusion of an egg and sperm cell.
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| Define: Recessive | an allele that is not expressed unless two copies are present in an organism's genotype.
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| Define: Enzyme | a protein that catalyzes chemical reactions for organisms.
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| Define: Prokaryote | an organism made up of cells that have no nuclei or membrane bound organelles.
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| Define: Osmosis | diffusion of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration.
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| Define: Chromosome | long, continuous strand of DNA that consists of numerous genes and regulatory information.
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| Define: Biomolecules (organic) | any molecule present in living organisms. (i.e. carbohydrates, proteins, lipids, nucleic acids, etc.)
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| Define: Meiosis | form of nuclear division that divides a diploid cell into haploid cells; important for forming gametes for sexual reproduction.
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| Define: Homozygous | having two different alleles for a gene.
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| Define: Homologous chromosomes | chromosomes that have the same length, appearance, and copies of genes, although the alleles may differ.
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| Define: Reactant | substance that is changed by a chemical reaction.
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| Define: Eukaryote | an organism made of eukaryotic cells; its cells contain nuclei and other organelles enclosed with membranes.
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| Define: Diffusion | the movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration.
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| Define: Cell membrane | the double layer of phospholipids that forma a boundary between a cell and the surrounding environment and controls the passage of materials into and out of a cell.
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| Define: Heterozygous | having two of the same alleles for a gene.
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| Define: Products | substance formed by a chemical reaction
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| Define: Metabolism | all chemical processes that synthesize or break down materials within an organism.
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| Define: Somatic | the cells that make up all of the body tissues, except the gametes.
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| Define: Negative feedback | control system for homeostasis that adjusts the body's conditions when the conditions vary from the ideal.
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| Define: Cellular respiration | the process of producing ATP by breaking down carbon-based molecules when oxygen is present.
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| Define: Concentration gradient | the difference in the concentration of a substance from one location to another.
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| Define: Dominant | the allele that is expressed when two different alleles are present in an organism's genotype.
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| Zygote | a cell that forms when a male gamete fertilizes a female gamete.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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