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26 Questions | Total Attempts: 39

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Student Quizzes & Trivia

QUESTIONS SCIENCES


Questions and Answers
  • 1. 
     WHAT IS LIFE? Biologists define life as the ability to carry out all of the basic life functions. Some of the life functions are describe below. Regulation = Controlling all of the other life processes. Ingestion = taking food in Digestion = breaking down food Circulation = moving food to all parts of an organism Respiration = burning food to make energy Assimilation = changing food into usefull substances Excretion = removing waste products Reproduction = making more of teh same kind Fire is almost alive, except it cannot carry out which of the following life function?
    • A. 

      Regulation

    • B. 

      Digestion

    • C. 

      Respiration

    • D. 

      Excretion

    • E. 

      Reproduction

  • 2. 
     WHAT IS LIFE? Biologists define life as the ability to carry out all of the basic life functions. Some of the life functions are describe below. Regulation = Controlling all of the other life processes. Ingestion = taking food in Digestion = breaking down food Circulation = moving food to all parts of an organism Respiration = burning food to make energy Assimilation = changing food into usefull substances Excretion = removing waste products Reproduction = making more of teh same kindWhich of the following life processes is necessary to ensure the survival of the species?
    • A. 

      Regulation

    • B. 

      Circulation

    • C. 

      Respiration

    • D. 

      Excretion

    • E. 

      Reproduction

  • 3. 
     WHAT IS LIFE? Biologists define life as the ability to carry out all of the basic life functions. Some of the life functions are describe below. Regulation = Controlling all of the other life processes. Ingestion = taking food in Digestion = breaking down food Circulation = moving food to all parts of an organism Respiration = burning food to make energy Assimilation = changing food into usefull substances Excretion = removing waste products Reproduction = making more of teh same kindWhich of the following describes an organism that carries out all its life functions?
    • A. 

      A plant

    • B. 

      An animal

    • C. 

      Incapable of intelligent thought

    • D. 

      Alive

    • E. 

      In damage of extition

  • 4. 
    Niles Eldridge and Stephen Jay Gould are neo-darwinists.While they believe that Darwin was essentially correct in his theory of natural selectionand evolution . They feel there are points that should be refined as scientists more. Specifically, they feelthat large and sudden changes in the enviroment will cause changes in the rate of specification. Which of the graphs above best illustrates their position?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      1 and 3

  • 5. 
    The diagram show that most trees cannot lives above
    • A. 

      3,000 feet

    • B. 

      6,200 feet

    • C. 

      8,200

    • D. 

      28 degrees latitude.

    • E. 

      52 degrees latitude.

  • 6. 
    Ecosystem are composed of communities of organisms in their habitats. An example would be a stream containing plants, insects, fish, and some birds. The ecosystem depends on continuos energy input, although materials can be recycled or new materials can be brought in.The energy that is inputted in this ecosystem is
    • A. 

      The heat energy of the stream

    • B. 

      Solar energy

    • C. 

      Kinetic energy

    • D. 

      Chemical energy

    • E. 

      Built up downstream in a lake

  • 7. 
    Assume that the insects are herbivorous and the fish eat the insects. Which statement is then correct?
    • A. 

      The insects are producers and the fish primary consumers

    • B. 

      The insects are producers and the fish secondary consumers

    • C. 

      The insects are primary consumers and the fish secondary consumers

    • D. 

      The insects are secondaryconsumers and the fish tertiary consumers.

    • E. 

      The plants are primary consumers and the insects secondary consumers

  • 8. 
    If there were a spill of DDT into the stream, the most DDT per kilogram would be found in
    • A. 

      Plants

    • B. 

      Insects

    • C. 

      Fish

    • D. 

      Birds

    • E. 

      Insects and fish.

  • 9. 
    Nerves can be classified as sensory, motor, or interneurons. Suppose that a person has his hand on a hot plate. He can feel the heat and knows that the plate is hot, but he cannot move his hand. this is indication of
    • A. 

      Sensory neuron damage.

    • B. 

      Motor neuron damage.

    • C. 

      Interneuron damage.

    • D. 

      Brain damage.

    • E. 

      Reflex reaction.

  • 10. 
    Beaker Number   Salt Content   Temperature 1 0% 10º  C 2 3% 10º  C 3 5% 10º  C 4 0% 20º  C 5 3% 20º  C 6 5% 20º  C A student wanted to do an experiment to find the best conditions for growing brine shrimp. She set up 6 beakers with the following conditions and placed a half-teaspon of eggs in each one:She sampled them each day for five days, and she found that the greatest number of shrimp grew 3% salt at either temperatures.In this experiment the dependent variable(s) is 9are)
    • A. 

      Percentage of salt.

    • B. 

      Temperature.

    • C. 

      Number of shrimp.

    • D. 

      Number of days.

    • E. 

      Percentage of salt and temperature.

  • 11. 
    The student was not satisfied with her results. She wanted results that could help her better distinguish the prederred growth conditions. To improve her experiment, she should
    • A. 

      Use finer divisions for the percentage of salt.

    • B. 

      Use finer divisions for the temperature.

    • C. 

      Let the experiment run longer.

    • D. 

      Be more careful about the volume of water the eggs were growing in

    • E. 

      Be more careful about adding a specific number of shrimp eggs.

  • 12. 
    The four major blood groups in humans are A, B, AB and O. People who are type A have a certain protein on their red blood cells(RBCs) that is referred to as "A." People with type B blood lack the "A" protein and have "B"  instead. People with type ABhave both proteins, while those with type O have neither protein on their RBCs.People with type O blood are called universal donors because they can give blood to individuals of any other blood groiup, since the recipients will not form antibodies to the O blood,  which carries neither protein. Every person receives half of this or her blood group type from the mother  and half from the father,  so that everyone has two alleles, or gene types, for the ABO blood groups. Which of the following statement is incorrect, according to the information above and your knowledge of biology?
    • A. 

      People with blood type AB cannot receive blood from a Type B donor.

    • B. 

      People with blood type O cannot receive blood from a person with Type AB.

    • C. 

      People with blood Type A, whose mother is Type B, can donate blood to Type A individuals.

    • D. 

      Some people with blood Type AB had a parent whose Type was A.

    • E. 

      Antibodies are proteins formed by the recipient that attack the proteins on the donor's RBCs.

  • 13. 
    A man with Type B blood married a woman with Type O blood. Which of the following blood groups could their children inherit?
    • A. 

      Type AB

    • B. 

      Type B

    • C. 

      Type O

    • D. 

      Types AB and O

    • E. 

      Types B and O

  • 14. 
    A student read reports of lead being removed from gasoline because it was harmful to humans. She hypothesized that it was harmful to other living things as well and developed a test lead in Water systems using small onions. She cut the end off the onions where the roots grew and placed each onion in a test tube containing lead nitrate solution. The concentrations of lead  are show on the diagram. Here is a diagram  of her experiment:Which of the following statemens is FALSE?
    • A. 

      The more lead in the solution, the less water.

    • B. 

      Lead caused the onion roots to grow more slowly.

    • C. 

      People should not eat onions that have been growing in lead.

    • D. 

      From left to right, the concentration of lead increases.

    • E. 

      Even small amounts of lead keep roots from growing.

  • 15. 
    Which of the following statements is TRUE?
    • A. 

      There is half as much lead in the first tube than the second tube(reading left to right).

    • B. 

      The first tube has 100 times more lead than the third tube.

    • C. 

      The amount of lead increases as you move left to right.

    • D. 

      There is twice the amount of lead in the first tube than the second tube.

    • E. 

      The fifth tube has five times the amount of lead as the first.

  • 16. 
    In 1998, the FDC ruled that the vitamin folic acid had to be added to flour. The purpose of thisaction was to reduced the number of neutral tube bith defects(such as spina bifida). Before the policy was put into effect, the number of neutral tube defects per 100,000 births was 37.8. In 2000, the number per 100.000 births was 30.5. In the same year, a study showed that women age 15-44 averaged more than doubled the amount of folic acid in their blood than did women studies before the mandatory fortification. Which of the following statements is correct?
    • A. 

      There was a 19% decrease in the number of neutral tube defects between 1998 and 2000.

    • B. 

      There was a 7.3% decrease in the number of neutral defects between 1998 and 2000.

    • C. 

      If wimen would double their intake of folic acid, they could reduce the number of birth defects by half.

    • D. 

      This study was faulty, because some women take vitamin supplements.

    • E. 

      The number of neutral tube birth defects per million women in 2000 was 378.

  • 17. 
    A virus is a small particle consisting of nucleic acid surrounded by a protein coat. Viruses are active only if they are in living cells because they reproduce more viruses by commandeering  the host cell's machinery. If the nucleics acid is RNA, the virus is said to be a retrovirus. It is called a retrovirus because it must change  its RNA to DNA before it can take over the host cell. When a retrovirus makes DNA from RNA, it uses an enzymes-reverse transcriptase. Viruses that contain DNA as their nucleic acid do not require this additional step and behave more like their hosts in that they follow the central dogma of modern biology: DNA makes RNA, which makes proteins. In order for any virus to become pathologenic in a cell it must
    • A. 

      Be alive.

    • B. 

      Contain RNA.

    • C. 

      Be a retrovirus.

    • D. 

      Have DNA.

    • E. 

      Have a protein coat.

  • 18. 
    Retroviruses are viruses that contain
    • A. 

      Only RNA and a protein coat.

    • B. 

      RNA, DNA, and protein

    • C. 

      Some of the host's machinery.

    • D. 

      Proteins that will convert RNA to DNA.

    • E. 

      None of the above

  • 19. 
    In order to harm a host's , retroviruses must
    • A. 

      Be in the host's nucleus.

    • B. 

      Use the host's cellular machinery to make new virus particles.

    • C. 

      Use an enzymes that will convert their RNA to DNA.

    • D. 

      Commandeer the host's cell machinery.

    • E. 

      All of the above.

  • 20. 
    Pollen is produced in the structure labeled
    • A. 

      A

    • B. 

      C

    • C. 

      D

    • D. 

      E

    • E. 

      F

  • 21. 
    The stament is(are) part(s)
    • A. 

      A

    • B. 

      A and B

    • C. 

      F

    • D. 

      E

    • E. 

      F and E

  • 22. 
    A scientist hypothesized that certain kinds of foods would help travelers avoid jet lag. She fed Group A a high protein diet and Group B a high-carbohydrate diet before a flight from New Jersey to Europe. She tested both groups 24 hours later for signs of jet lag.What is the most important element missing from this experimental design?
    • A. 

      The scientist's observations are not included.

    • B. 

      The scientis did not consider the age of the subjects.

    • C. 

      The scientist did not include a control group.

    • D. 

      There was no mention of the number of time zones involved.

    • E. 

      The scientist did not include a high-fat diet.

  • 23. 
    Evolution is defined as changes in gene frequencies in a population over time. Evolution is a basic concept in biology. It is important to understand that  individuals do not envolve; species evolve. The basic principal underlying evolution is survival of the fittest: some individuals in a species have the right combination of genes to survive better than competitors and reproduce readily in their environment. Their genes are, therefore, passed on to future generations, and those genes determine the future genetic composition of the species.Which of the following condictions is necessary for evolution to occur?
    • A. 

      A stable environment

    • B. 

      Apopulation with a stable genetic composition

    • C. 

      A lack of genetic mutation

    • D. 

      A population with genetic variablity

    • E. 

      An unlimited amount of resources

  • 24. 
    Which of the following is a FALSE statement according to this illustration?
    • A. 

      Carbon dioxide is not a vital part of life, just a waste by product.

    • B. 

      Animal take in oxygen and breath out carbon dioxide.

    • C. 

      Both plants and animals must "breathe" to survive.

    • D. 

      Oxygen is vital both for plant and animal life.

    • E. 

      Even dead material has a place in the carbon cycle of life

  • 25. 
    From an ecological standpoint there are three main population subgroups: the prereproductive, reproductive, and postreproductive age groups. These groups give a very good idea of the future of the population,. When the birth rate is high and ther rate of population growth is eponential, then a population histogram is in the shape of a pyramif(show on the left). A histogram with a tapering base shows a lower future growth due to the smaller prereproductive segment of the population(middle).A histogram that shows no contriction or expansion of the base shows a stationary population(right). These histograms are important to politicians, busines leaders, and educators who have to plan for the future.A Population histogram plot
    • A. 

      Wealthy countries against less-developed countries.

    • B. 

      The percent of the population in each age group by sex.

    • C. 

      Population growth as well a limiting factors.

    • D. 

      The biotic potencial against the environmental resistance.

    • E. 

      The rate of population growth for a given country.