3 Final

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Science Review Questions

Endocrine and Nervous Systems

  1. Which of the following is an example of the endocrine system directly interacting with the nervous system?
    2. Hormones provide feedback that affects neural processing.

Early Earth and Evolution

  1. Oxygen is scarce during the early development of Earth. By this situation, what kind of organism first existed?
    2. Anaerobic organism
  2. Why do you think the emergence of plants and animals came later than simple living organisms?
    3. Their size is too big that it takes longer time for development.
  3. Which statement is incorrect about living organisms?
    4. Organisms did not change despite of the changes in the environment.
  4. What is the evidence for a last universal common ancestor among life on Earth?
    5. They share similar molecular features.
  5. Which of the following is NOT true about the evidence that fossils provide?
    6. Fossil organisms often share physical similarities with living organisms.
  6. Why did it take millions of years for life to appear on Earth after the planet had formed?
    7. The planet had cooled down enough to sustain life.
  7. Which adaptation took advantage of the presence of free oxygen in the oceans and atmosphere?
    8. The evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules.

Reproduction and Development

  1. Genes are passed from one generation to the next generation through
    2. reproduction and inheritance.
  2. Makahiya plant closes its leaflets when touched. This is an example of
    3. response to stimuli.
  3. A factory opens nearby the forest and covers it with soot. What will happen to the moths due to such environmental changes?
    4. Moths with the lighter coloration will have difficulty surviving.
  4. Birds that eat insects have a different beak shape than the ones that eat seeds. This is an example of
    5. evolution
  5. Chameleons shift colors wherever they go. They are able to turn any colors, combine colors depending on where the environment is. What trait is being described?
    6. Adaptation.
  6. All organisms alive today have descended from simple cellular creatures billions of years ago. Biologists were able to identify and preserve some of the characteristics of that earliest organisms. This is associated with what theme?
    7. Unity of living systems is explained by evolutionary conservation.

Body Systems and Functions

  1. The orchard sprayed with the chemical yields an average of 60 kilos of mango per tree, the other orchard yields an average of 40 kilos of mangoes per tree. Based on the data, in order to have a better yield, trees must:
    2. Receive the same amount of sunlight, receive the same amount of water, increase the orchard spray.
  2. Living organisms can be protected if we fight against deforestation. Which among the statements doesn't support the advocation?
    3. Support the products of companies producing deforestation.
  3. Understanding the differences between sexual and asexual reproduction has various applications. Which of the following is NOT a valid example?
    4. Predicting and preparing for potential outbreaks of infectious diseases in animal populations.
  4. Which asexual reproduction process is exhibited by flatworms?
    5. Fragmentation
  5. Which asexual reproduction process where an individual grows on the body of its parent like hydra and yeast?
    6. Budding
  6. Which of the following organisms reproduce via external fertilization?
    7. Fish
  7. Which asexual reproduction process is also a characteristic of a monoecious organism?
    8. Hermaphroditism
  8. How many chromosomes do human sperm cells have?
    9. 23
  9. What happens when a sperm cell fertilizes an egg cell?
    10. The sperm cell and egg cell fuse to form a zygote.
  10. During the final stage of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. This process involves the interaction of which organ system?
    11. Endocrine, Muscular and Reproductive
  11. When you exercise, your muscles require more oxygen. How does the nervous system respond to this?
    12. By releasing hormones to increase the respiration rate.
  12. What two body systems are most useful in getting nutrients from the food that you eat?
    13. Circulatory and digestive systems
  13. Which of the following describes an interaction that occurs between two body systems of a rabbit that helps the rabbit outrun a pursuing coyote?
    14. The respiratory system increases the breathing rate, and the circulatory system increases blood pressure to provide tissues with more oxygen.

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