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Life Science Review (8th grade test)

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  • Put the following in the correct order: tissue, organ system, cell, organ
    cell, tissue, organ, organ system
  • Passing of traits from one generation to another is the definition of:
    Heredity
  • A gene that does not show itself unless it is paired with a like gene. Ex: Red hair and blue eyes
    dominant
    alleles
    recessive
    chromosomes
  • Which statement describes the cellular makeup of a deer?
    Deer are made of many cells that carry out many processes
    Deer are made of many cells that carry out no processes
    Deer are made of one cell that carries out all processes
    Deer are made of one cell that carries out one life process
  • Give an example of a producer (from our ecology unit).
    Any plant
  • Where does digestion START?
    In the mouth
  • What is responsible for getting rid of dead organisms in the food chain?
    decomposers or scavengers
  • Which human trait is most likely inherited from a parent?
    drinking from a cup
    how tall you are
    reading a book
    holding a fork
  • If blonde hair is recessive, look at the table to determine the probability of blonde hair. What is it?
    25% or 1/4
  • Which of the following is NOT part of the Circulatory System?
    lungs
    arteries
    brain
    heart
  • An organism has several major body systems that work together to allow the organism to survive. Which best describes this organism?
    It is a transport system
    It is multi-celled
    It is single-celled
    It is unicellular
  • Transporting gases and nutrients all over the body is the job of what system?
    respiratory
    circulatory
    nervous
    skeletal
  • What percent of genes come from the mother in human sexual reproduction?
    50%
  • What does the arrow represent in a food web?
    The arrow points towards the animal eating it (The flow of energy)
  • Define an abiotic factor.
    Non-living things within an ecosystem
  • Which of the following is a Heterozygous alleles? BB, Bb, bb
    Bb
  • Which body system brings oxygen into your body?
    Respiratory
  • Eelgrass is a major source of food for birds and turtles in an estuary. What will most likely happen to the bird and turtle populations if people remove the eelgrass to build a bridge?
    Both populations will decrease
    bird population will increase, but the turtles will decrease
    bird population and the turtle population will increase
    turtle population will increase, but the birds will decrease
  • Based on the food web, what role does the crab play?
    scavenger
    producer
    consumer
    decomposer
  • Is this a food chain or food web?
    Food Chain
  • What is the difference between a genotype and a phenotype?
    Answer varies, teacher discretion.
  • Which is the primary consumer in this food chain?
    Grasshopper
  • Identify an a example of an abiotic factor?
    algae
    sunlight
    animals
    plants
  • An inherited behavior, one that is not learned but is done automatically. Ex: A spider spinning a web
    instinct
    acquired
    behaviors
    learned
  • This is a picture of a(n)
    Animal Cell
  • Which biome is hot all year with wet and dry seasons?
    tundra
    taiga
    desert
    grasslands
  • Food is broken down into useful nutrients for your body in the ____________
    muscular
    excretory
    digestive
    nervous
  • Which can be concluded about the trees that grow in a temperate deciduous forest?
    The trees have adapted to survive the change of seasons
    The trees are unable to grow in climates that have constant
    The trees require constant direct sunlight to survive
    The trees grow only during the warm months of the year
  • This organelle contains DNA and controls cellular growth and reproduction
    Nucleus
  • A characteristic that is passed from parents to offspring such as hair color, eye color, freckles, dimples.
    acquired
    learned
    inherited
    behaviors
  • Which characteristic best describes both amoebas and bacteria?
    biotic
    abiotic
    single-celled
    multi-celled
  • Which best describes a producer?
    an organism that gets its energy from plants
    an organism that gets its energy from animals
    the sun because it provides energy for plants
    a plant that makes its own food
  • What is quantitative data in an experiment?
    data usually in the form of numbers
  • In what way are the circulatory system & nervous system similar?
    They are transport systems.
    They both perform the same function.
    They both involve the same organs.
    They are both structural sytems.
  • What is a carnivore?
    An animal whose food and energy requirements derive solely from animal tissue or meat
  • What is the function of the circulatory system?
    The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood on different sides.
  • Conner’s scar is a(n) ________________________________________ because it happened after his birth.
    instinct
    acquired
    learned
    behavior
  • Plants use water, carbon dioxide and sunlight during the process of photosynthesis and produce _____________ & __________________.
    Oxygen & Glucose
  • What is the name of the process in which plants make their own food called?
    Photosynthesis
  • Tyler is classifying organisms according to their source of energy. Based on the food chain pictured, which organism would be considered a carnivore?
    bird
    maple leaf
    sun
    ant
  • In a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem?
    The nutrition of the soil in the ecosystem will decrease
    More types of plants will begin growing in the ecosystem
    There will be a decrease in the population of snakes
    The ecosystem will become overpopulated with snakes
  • This is an image of a(n)
    Plant Cell
  • An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
    They play a role in preventing weathering and erosion
    They provide the energy to most of the consumers.
    They produce their own food for survival.
    They break down dead things & return nutrients to the soil
  • What rigid structure is only found in plant cells?
    Cell Wall
  • From whom may an animal inherit characteristics?
    other animals in the ecosystem
    its parents
    its brothers and sisters
    other animals in the population
  • An organism only made out of one cell is called
    Unicellular
  • Which biome do we live in?
    boreal forest
    savanna
    deciduous forest
    taiga
  • What three systems work together to move the body?
    Skeletal, Respiratory, Digestive
    Circulatory, Respiratory, Digestive
    Nervous, Circulatory, Skeletal
    Skeletal, Muscular, Nervous
  • The smallest unit of a living thing that can carry out the basic processes of life.
    chloroplast
    cell
    chlorophyll
    atom
  • How does the muscular system depend on the nervous system?
    nervous system sends signals to the muscles
    nervous system supplies food and oxygen to the muscles
    The nervous system transports blood to the muscles
    The nervous system provides support for the muscles
  • Openings that let air and water move it and out of leaves are called? A. Stomach B. Phloem C. Stomata D. Las Bocas
    C. Stomata
  • John's father is a chemist and his mother is a teacher. John wants to be a teacher when he grows up. Which best describes John's desire to be a teacher?
    career choice is an inherited characteristic from one's mot
    career choice is a learned characteristic that is chosen by
    career choice is an inherited characteristic from one's fath
    career choice is a learned characteristic that is influenced
  • What is qualitative data in an experiment?
    something that can be observed by using senses
  • How are the digestive and circulatory systems alike?
    Both protect organs in the body.
    Both provide structural support for the body.
    Both absorb gases or nutrients into the body.
    Both control movement in the body.
  • In a food chain, the sun provides energy for an apple tree to grow. A deer eats an apple from the tree. Which is a consumer?
    apple
    sun
    tree
    deer
  • The tool scientists use to see cells is called a _________.
    microscope
  • What are the three main types of muscle in the human body?
    Smooth, Cardiac, and Skeletal
  • Which human body systems are located throughout most of the body?
    digestive and respiratory
    digestive and circulatory
    respiratory and circulatory
    skeletal and respiratory
  • What part of a cell contains heredity information? Cell Membrane, Vacuole, Endoplasmic Reticulum, or Chromosomes
    Chromosomes
  • How many of the potential offspring would carry the dominant gene?
    3
  • A group of ecosystems with similar organisms and climates.
    population
    biome
    desert
    ecosystem
  • Which land biome is mainly covered with grass?
    desert
    tundra
    prairies
    taiga
  • What 2 body systems work closely together to distribute nutrients from food throughout the body?
    muscular and skeletal
    circulatory and respiratory
    cardiovascular and nervous
    digestive and circulatory
  • Which trait does a dog inherit from its parents?
    fur color and pattern
    food brand preferences
    obedience to commands
    affection towards its owners
  • Biotic factors of an ecosystem are:
    living
    nonliving
    rocks
    plants
  • How does the muscular system depend on the nervous system?
    The nervous system provides support for the muscles.
    The nervous system sends signals to the muscles.
    The nervous system transports blood to the muscles.
    The nervous system supplies food & oxygen to the muscles.
  • Looking at the food web below, which animal is an omnivore?
    fox
    bear
    deer
    owl
  • Kim has freckles. Which best explains why?
    Kim's parents have freckles
    Kim likes freckles
    Kim's mother wants the baby to have freckles
    All babies have freckles
  • This organelle provides the energy for the cell
    Mitochondria
  • A gene that always overpowers a recessive gene. Ex: Brown Eyes
    inherited
    dominant
    genetics
    recessive
  • If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?
    The population of deer will become extinct.
    the population of deer will increase.
    The population of deer will decrease.
    The population of deer will remain the same.
  • Prairies and savannas are two examples of this land biome?
    taiga
    tundra
    grasslands
    biomes
  • Which of the following pond food chains is in the correct order?
    Algae --> Insects --> Bluegill Fish
    Bluegill fish --> Insects --> Frogs
    Grass--> Insects --> Algae
    Algae--> Bluegill fish --> Insects
  • How many chambers does the human heart have?
    4
  • Name three different body systems and give an example of a major organ of each one.
    Answer varies. Up to teacher discretion.
  • What is the control center of the cell?
    Nucleus
  • All of these statements are part of cell theory, EXCEPT 1. All living things are composed of cells 2. Cells are the basic unit of structure and function 3. New cells come from existing cells 4. Cells are really small
    4. Cell are really small
  • Which biome is sandy and/or rocky with very little rain?
    taiga
    grassland
    desert
    boreal forest
  • Which biome has the most variety of plants and animals?
    deciduous forest
    grasslands
    rainforest
    tundra
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