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8th grade DCA 5 Review

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  • A trait that only shows up when two copies are present is called what?
    Recessive
  • What was the name of the lab where we tested different “beaks”?
    Battle of the Beaks
  • A trait you are born with from your parents is called what?
    Inherited trait
  • What part of the cell controls everything and holds the DNA?
    Nucleus
  • What do we call different versions of the same gene, like eye color?
    Alleles
  • In the lab, what did the items we picked up represent?
    Food sources
  • Why do organisms with helpful adaptations survive more often?
    They are better suited to their environment
  • What do we call body features or behaviors that help an organism survive?
    Adaptations
  • What structure surrounds the cell and controls what goes in and out?
    Cell membrane
  • What tiny structures make proteins for the cell?
    Ribosomes
  • What is an action or behavior that helps an organism survive called?
    Behavioral adaptation
  • What structure in the nucleus holds many genes together?
    Chromosomes
  • Which structure is found in both plant and animal cells and helps protect the cell?
    Cell membrane
  • What tool is used to predict the traits of offspring?
    Punnett square
  • What organelle is found only in plant cells and helps make food using sunlight?
    Chloroplast
  • Thick fur on a polar bear is an example of what type of adaptation?
    Physical adaptation
  • What is the process where organisms with helpful traits survive and reproduce more?
    Natural selection
  • Breeding dogs to be smaller or larger is an example of what?
    Selective breeding
  • Camouflage that helps an animal blend in is what type of adaptation?
    Physical adaptation
  • What is a physical body feature that helps an organism survive called?
    Physical adaptation
  • A trait you develop because of your environment, like a scar or tan, is called what?
    Acquired trait
  • Which structure is found in plant cells but NOT animal cells and gives support?
    Cell wall
  • In Battle of the Beaks, what did the different tools represent?
    Different bird beaks
  • Why did some “beaks” collect more food than others?
    They were better suited for that food source
  • A trait that shows up even when only one copy is present is called what?
    Dominant
  • What do we call the instructions in your cells that tell your body how to grow?
    Genes
  • What organelle is known as the “powerhouse” of the cell because it makes energy?
    Mitochondria
  • What jelly-like substance fills the cell and holds the organelles in place?
    Cytoplasm
  • Which cell type has both a cell wall and chloroplasts?
    Plant cell
  • What large storage structure holds water, food, or waste in the cell?
    Vacuole
  • When humans choose which organisms reproduce to get certain traits, what is that called?
    Selective breeding
  • A trait you gain by practicing or being taught, like riding a bike, is called what?
    Learned trait
  • Birds migrating south for the winter is an example of what type of adaptation?
    Behavioral adaptation
  • What does Battle of the Beaks demonstrate about survival?
    Organisms with helpful traits survive and get more food
  • Over many generations, helpful traits become more common because of what?
    Natural selection
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