Biology Semester 2 Study Guide

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  • 1/18 Questions

    There are a group of birds living an ecosystem that lived in a particular type of oak tree.  Loggers come into their ecosystem and begin to target and cut down this type of tree.  What do you think will happen to this population of birds? 

    • The population would increase.
    • The population would decrease
    • The population would remain the same.
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About This Quiz

This 'Biology semester 2 study guide' assesses understanding of ecological dynamics, such as the impact of human activities on bird populations, factors influencing biodiversity, secondary succession, trophic levels, and biotic components. It's designed to enhance students' knowledge in biological and environmental sciences.

Biology Semester 2 Study Guide - Quiz

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  • 2. 

    What structure in the plant is the site of photosynthesis?

    • Chloroplast

    • Xylem

    • Thylakoid

    • Mitochondria

    Correct Answer
    A. Chloroplast
    Explanation
    Chloroplasts are the organelles found in plant cells that are responsible for photosynthesis. They contain chlorophyll, the pigment that captures sunlight and converts it into energy for the plant. Inside the chloroplasts, there are thylakoids, which are the site where the actual photosynthesis process takes place. Xylem is responsible for transporting water and nutrients throughout the plant, while mitochondria are responsible for cellular respiration, not photosynthesis. Therefore, the correct answer is chloroplast.

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  • 3. 

    ___________ is an example of a biotic factor.

    • Sunlight

    • Soil

    • Humidity

    • Predators

    Correct Answer
    A. Predators
    Explanation
    Predators are an example of a biotic factor because they are living organisms that directly interact with other organisms in an ecosystem by hunting and consuming them. Biotic factors refer to the living components of an ecosystem, such as plants, animals, and microorganisms, that play a crucial role in shaping the environment and influencing the population dynamics of other organisms. Predators, by controlling the population of prey species, can have a significant impact on the overall balance and diversity of an ecosystem.

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  • 4. 

    Bears would be an example of what trophic level?

    • First level

    • Second level

    • Third level

    • Not included in the classification

    Correct Answer
    A. Third level
    Explanation
    Bears would be an example of the third trophic level because they are carnivores that primarily feed on herbivores, which are at the second trophic level. The trophic level refers to the position of an organism in a food chain or food web, based on its source of energy. The first trophic level consists of primary producers (plants), the second level consists of herbivores (animals that eat plants), and the third level consists of carnivores (animals that eat other animals). Since bears feed on other animals, they would be classified as third-level consumers.

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  • 5. 

    When trees lose water through their leaves in the water cycle, this is called _________________.

    • Peroclation

    • Precipitation

    • Runoff

    • Transpiration

    Correct Answer
    A. Transpiration
    Explanation
    Transpiration is the correct answer because it refers to the process by which trees and other plants lose water through their leaves. During transpiration, water evaporates from the leaves and exits through small openings called stomata. This water vapor then enters the atmosphere, where it can condense and form clouds, eventually leading to precipitation. Transpiration is an essential part of the water cycle, as it helps to regulate the movement of water through ecosystems and contribute to the overall distribution of water on Earth.

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  • 6. 

    What is the name of the phenomenon where plants grow toward a particular light source?

    • Photosynthesis

    • Phototropism

    • Cellular respiration

    • Calvin cycle

    Correct Answer
    A. Phototropism
    Explanation
    Phototropism is the correct answer because it refers to the phenomenon where plants grow towards a particular light source. This is a response mechanism in plants that allows them to maximize their exposure to sunlight, which is essential for photosynthesis. Photosynthesis, cellular respiration, and the Calvin cycle are all related to the process of converting light energy into chemical energy in plants, but they do not specifically describe the growth of plants towards light sources.

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  • 7. 

    Where does cellular respiration take place in the cell?

    • Chloroplast

    • Nucleus

    • Ribosomes

    • Mitochondria

    Correct Answer
    A. Mitochondria
    Explanation
    Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water. This process occurs in the mitochondria of the cell. Mitochondria are known as the "powerhouses" of the cell because they produce the majority of the cell's energy through cellular respiration. The other options, such as chloroplasts, nucleus, and ribosomes, have different functions within the cell and are not directly involved in cellular respiration.

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  • 8. 

    The job of the guard cell is to _____________________.

    Correct Answer
    regulate gas exchange
    Explanation
    The guard cells in plants are responsible for regulating gas exchange, specifically the exchange of carbon dioxide and oxygen. They control the opening and closing of the stomata, which are tiny pores on the surface of leaves. When the guard cells are turgid, the stomata open, allowing for the uptake of carbon dioxide for photosynthesis and the release of oxygen. Conversely, when the guard cells are flaccid, the stomata close, preventing excessive water loss through transpiration. Therefore, the main function of guard cells is to regulate gas exchange in plants.

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  • 9. 

    What is an example of secondary succession?

    • Plants begin to grow in an area previously affected by volcano eruption.

    • A group of lions moves into a savannah after a brush fire has removed the previous pride.

    • Algae forms in a newly formed pond.

    • All of the above

    Correct Answer
    A. A group of lions moves into a savannah after a brush fire has removed the previous pride.
    Explanation
    Secondary succession refers to the process of ecological succession that occurs in an area that has been previously disturbed or disrupted, such as after a fire or a volcanic eruption. In this case, the lions moving into a savannah after a brush fire has removed the previous pride is an example of secondary succession because the area has been cleared and the lions are colonizing the area that was previously occupied by another group. This demonstrates the process of succession where new species or populations establish themselves in an area that has been disturbed.

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  • 10. 

     Exponential growth has a graph that show a period of rapid growth that slows down due to density-dependent factors.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Exponential growth does not slow down due to density-dependent factors. In fact, exponential growth continues at a constant rate without any limitations, regardless of population density. Density-dependent factors, such as competition for resources or predation, typically lead to a slowing down or stabilization of population growth, resulting in a logistic growth pattern. Therefore, the given statement is false.

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  • 11. 

    Which factor would have a greater influence on  biodiversity in an aquatic ecosystem?

    • A volcano eruption on land

    • A earthquake

    • Increased pollution

    • All of the above

    Correct Answer
    A. Increased pollution
    Explanation
    Increased pollution would have a greater influence on biodiversity in an aquatic ecosystem compared to a volcano eruption on land or an earthquake. Pollution in water bodies can introduce harmful chemicals, toxins, and excessive nutrients, leading to the degradation of water quality and the loss of aquatic species. It can disrupt the natural balance of the ecosystem, impacting the survival and reproduction of various organisms. While a volcano eruption or an earthquake may cause temporary disturbances, they are unlikely to have the same long-term and widespread negative effects on biodiversity as increased pollution.

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  • 12. 

    When a rabbit eats a plant, then that rabbit is eaten by a snake.  How much of the energy from the plant will the snake receive and be able to use?

    • 10%

    • 90%

    • 1%

    • 100%

    Correct Answer
    A. 1%
    Explanation
    When a rabbit eats a plant, only a small fraction of the energy from the plant is transferred to the rabbit due to energy loss through metabolic processes. Similarly, when the snake eats the rabbit, there is further energy loss. This means that the snake will receive and be able to use only a tiny portion of the original energy from the plant, which is approximately 1%.

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  • 13. 

    Which are functions of the immune system?

    • Protect body from invading pathogens

    • Help white blood cells to circulate to infections.

    • Destroy cells that are faulty.

    Correct Answer(s)
    A. Protect body from invading pathogens
    A. Destroy cells that are faulty.
    Explanation
    The immune system plays a crucial role in protecting the body from invading pathogens by recognizing and neutralizing them. It does this through the production of antibodies and activation of immune cells. Additionally, the immune system is responsible for destroying cells that are faulty, such as cancerous cells or cells infected by viruses. This is done through a process called apoptosis, where the immune system triggers the programmed cell death of these abnormal cells.

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  • 14. 

    I am growing red roses and i want to make sure the stems are long, what chemical could be added to assist in this process?

    • Gibberellins

    • Ethylene

    • Cytokinins

    • Nitrogen rich fertilzer

    Correct Answer
    A. Gibberellins
    Explanation
    Gibberellins are plant hormones that promote stem elongation and cell division. By adding gibberellins to the red roses, it can help stimulate the growth of longer stems. This hormone is commonly used in agriculture and horticulture to increase the height and length of plant stems, making it an ideal chemical to assist in the process of growing red roses with long stems.

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  • 15. 

    Http://www.aaronmartini.com/network/games/heart/index.html Complete the activity.  Must record a score of at lest 25 then place score out of 33 in the answer box.

    Correct Answer
    25-33
  • 16. 

    Why would the bear in the previous question be placed in this group?  Give evidence to support your answer.

  • 17. 

    How does the tiger contribute to the the carbon cycle?  Explain in steps, how they will contribute both alive and dead.

  • 18. 

    What could be a serious risk for a person who injured their brainstem in a car accident?

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  • May 16, 2023
    Quiz Edited by
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  • Jun 21, 2012
    Quiz Created by
    Andrewlawrance20
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