Biology Chapter on Ecology and Adaptation
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Questions and Answers

Which research methodology was NOT employed in the chimpanzee studies?

  • Zoo observation
  • Laboratory observation
  • Genetic manipulation (correct)
  • Natural habitat observation

What is the most accurate description of how scientists formulate a hypothesis?

  • Through pure guesswork
  • Based on observation, experience, and logical reasoning (correct)
  • By conducting unrelated experiments
  • Through reliance on established theories alone

How does the structure of fat cells support their function of energy storage?

  • They are linked together forming strong webs.
  • They reproduce rapidly ensuring quick energy release.
  • They are rigid, preventing energy loss.
  • They can expand to accommodate more energy. (correct)

Which structural characteristic of red blood cells is most crucial for their oxygen-carrying function?

<p>Their smooth, disc-like shape aids movement through blood vessels. (B)</p> Signup and view all the answers

In which situation does structural change negatively impact optimal function?

<p>Red blood cells being sickle shaped (A)</p> Signup and view all the answers

Which of the following is NOT a characteristic of life?

<p>Symbiosis (C)</p> Signup and view all the answers

How does sweating help maintain homeostasis during exercise?

<p>It regulates body temperature (B)</p> Signup and view all the answers

Which statement accurately describes unicellular organisms?

<p>Unicellular organisms carry out all life processes within their one cell. (B)</p> Signup and view all the answers

Which question is best addressed using scientific methods?

<p>Does the tail length of a male sparrow influence the female's choice of mate? (D)</p> Signup and view all the answers

What is the correct order of steps in the scientific method?

<p>Make observations, form a hypothesis, conduct an experiment, gather and analyze data, draw conclusions, alter the hypothesis (C)</p> Signup and view all the answers

Which of the following best describes a dependent variable in an experiment?

<p>Dependent variable (B)</p> Signup and view all the answers

A turtle retracting its head into its shell when approached by a person exemplifies which characteristic of life?

<p>Response (A)</p> Signup and view all the answers

In an experiment testing the effect of fertilizers on plant growth, a botanist measures plant height daily. What is the dependent variable in this experiment?

<p>Plant height (B)</p> Signup and view all the answers

A female wolf with a short, curved tail mates and produces offspring with similar traits. Which characteristic of life is best demonstrated by this scenario?

<p>Heredity (B)</p> Signup and view all the answers

A botanist conducts an experiment to determine the effect of two different fertilizers on plant growth. Plant 1 receives Fertilizer A, Plant 2 receives Fertilizer B, and Plant 3 receives no fertilizer. Which of the following is the control group?

<p>Plant 3 (D)</p> Signup and view all the answers

How would the construction of a large store and parking lot, replacing a vernal pool in a woodlot, most likely affect the local salamander population?

<p>Salamanders would lose their mating and egg-laying habitat. (A)</p> Signup and view all the answers

Which of the following sequences correctly orders ecological levels of organization from simplest to most complex?

<p>Population, community, ecosystem, biome (B)</p> Signup and view all the answers

Which of the following scenarios best illustrates an evolutionary adaptation that enhances an organism's survival and reproductive success?

<p>A salamander lays many eggs about 6 inches below the water's surface to protect them. (C)</p> Signup and view all the answers

Life on Earth is fundamentally dependent on energy from which primary source?

<p>The sun (B)</p> Signup and view all the answers

The sum of all chemical reactions occurring within an organism is referred to as:

<p>Metabolism (C)</p> Signup and view all the answers

Some aquatic frogs bury themselves in mud and hibernate at the bottom of lakes. Which characteristic of life does this behavior best represent?

<p>Maintaining homeostasis (A)</p> Signup and view all the answers

A student observes three plants: Plant 1 receives Fertilizer A, Plant 2 receives Fertilizer B, and Plant 3 receives no fertilizer. After 14 days, Plant 1 is 7 cm tall, Plant 2 is 12 cm tall, and Plant 3 is 20 cm tall. Which of the following represents a valid conclusion based solely on this data?

<p>Fertilizers did not help the plants grow. (D)</p> Signup and view all the answers

Which of the following actions best exemplifies a scientist employing established scientific methods?

<p>A researcher identifies recurring trends and relationships within collected and organized data. (D)</p> Signup and view all the answers

A scientist is studying female digger wasps, which dig nests to lay eggs and then return to feed the larvae. Which research question aligns with investigating the behavior of these wasps?

<p>How does she know where her nest is located? (D)</p> Signup and view all the answers

How did methodological approaches to studying the natural world evolve from Aristotle's time to the 1600s?

<p>There was a shift from prioritizing reasoning to emphasizing evidence obtained from experiments and observations in answering questions. (B)</p> Signup and view all the answers

Jane Goodall's conclusion that chimpanzees use tools was primarily based on what type of evidence?

<p>Observing chimpanzees in their natural habitat crafting and utilizing tools. (B)</p> Signup and view all the answers

Flashcards

Response to stimuli

The ability of a living organism to respond to changes in its environment, such as the turtle drawing its head into its shell when approached.

Heredity

The passing of traits from parents to offspring. This is why offspring often resemble their parents.

Metabolism

All the chemical processes that occur within a living organism to maintain life, including breaking down food for energy and building new cells.

Ecosystem

The most complex level of organization in a biological system, including all living things and their environment within a specific area.

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Adaptation

A characteristic that helps an organism survive and reproduce in its environment. Like polar bears having white fur for camouflage in snow.

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Life's energy source

The sun is the ultimate source of energy for almost all life on Earth. Plants use sunlight for photosynthesis, which provides energy to the food chain.

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Metabolism

The sum of all chemical reactions that occur within a living organism. These reactions include breaking down food and building new cells.

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Homeostasis

The ability of an organism to maintain a stable internal environment, despite external changes. Like sweating to cool down.

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How do scientists develop a hypothesis?

A hypothesis is a testable prediction or explanation for an observation. Scientists develop hypotheses through a combination of observation, experience, and logical reasoning.

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How does the structure of a fat cell relate to its function?

The structure of a fat cell is expandable, which allows it to store large amounts of energy. This is a direct link between structure and function.

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How does the structure of a red blood cell relate to its function?

Red blood cells are shaped like smooth discs, which increases their surface area and allows them to efficiently transport oxygen throughout the body. This is an example of structure-function relationship.

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How does the structure of the lungs relate to its function?

The structure of the lungs, being large and spongy, allows for efficient gas exchange. This is a clear example of how structure supports function.

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What example depicts when a structure no longer meets optimum function?

Sickle-shaped red blood cells have an abnormal structure that leads to reduced oxygen transport and other health complications. This is an example of how a change in structure can negatively impact function.

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Scientific Method

The process of gathering data, analyzing it, and drawing conclusions about the natural world.

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Stimulus

A change in an organism's environment that causes a response.

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Response

The ability of an organism to react to changes in its environment.

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Controlled Experiment

A carefully designed experiment with only one factor changed at a time, allowing scientists to isolate the effect of that factor.

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Control Group

The group in an experiment that does not receive the treatment or change being tested.

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Experimental Group

The group in an experiment that receives the treatment or change being tested.

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Independent Variable

The factor being tested in an experiment, the one thing that is changed.

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Dependent Variable

The factor that is being measured or observed in an experiment, the result of the independent variable.

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Growth and Development

The series of changes that occur in a living organism from its beginning to its mature form. It includes growth, development, and differentiation.

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What is the scientific method?

The scientific method is a process for gaining knowledge through observation, experimentation, and analysis. It involves asking questions, forming hypotheses, conducting experiments, collecting data, analyzing results, and drawing conclusions.

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What is an experiment?

An experiment is a controlled test designed to investigate a hypothesis. It involves manipulating one or more variables while keeping others constant.

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What is an independent variable?

The variable that is manipulated or changed by the experimenter in an experiment. It's the factor that is being tested.

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What is a dependent variable?

The variable that is measured or observed in an experiment. It's the outcome or effect that is being studied.

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Study Notes

Item 1

  • A turtle retracting its head into its shell when a person approaches is an example of a response.

Item 2

  • Offspring inheriting short, curved tails, like their parents is an example of heredity.

Item 3

  • A new store and parking lot in a natural area is likely to harm salamanders by taking away their mating and egg-laying habitat.

Item 4

  • The ecological levels of organization, from simplest to most complex are: population, community, ecosystem, biome.

Item 5

  • A female polar bear giving birth during the Arctic summer is a response to changing environmental conditions. This behavior, as well as other evolutionary adaptations help polar bears survive and reproduce in the Arctic environment.

Item 1 (Page 6)

  • Life on Earth requires energy from the sun.

Item 2 (Page 7)

  • Metabolism is the collection of chemical reactions an organism does.

Item 3 (Page 8)

  • Some aquatic frogs spending the winter hibernating at the bottom of lakes and ponds, is an example of a response to environmental conditions, particularly the cold weather of winter.

Item 4 (Page 9)

  • Sweating during exercise helps maintain homeostasis by regulating body temperature.

Item 5 (Page 10)

  • Unicellular organisms perform all life functions within their single cell.

Item 1 (Page 11)

  • The question "Does the tail length of a male sparrow influence the female's choice of mate?" can be answered with scientific methods.

Item 2 (Page 12)

  • The scientific method steps in correct order are: make observations, form a hypothesis, conduct an experiment, gather and analyze data, draw conclusions.

Item 3 (Page 13)

  • Experiments measure the dependent variable.

Item 4 (Page 14)

  • In a plant experiment testing the effectiveness of fertilizers, plant height is the dependent variable.

Item 5 (Page 15)

  • Based on the data in the provided table the conclusion that can be drawn, is; Fertilizer A was more effective than Fertilizer B.

Item 1 (Page 16)

  • A scientist using scientific methods might observe, analyze, and conclude patterns in data about a phenomenon.

Item 2 (Page 17)

  • Relevant questions about the behavior of female digger wasps include: "How many eggs does she lay at a time?" "How does she know where her nest is located?")

Item 3 (Page 18)

  • Scientific methods have evolved over time, with new technologies adding to and improving observation, experimentation, and analysis, leading to a more in-depth discovery of natural phenomena.

Item 4 (Page 19)

  • Jane Goodall observed chimpanzees in the wild making and using tools, drawing conclusions about the animals' behaviors.

Item 5 (Page 20)

  • Scientists develop hypotheses using observations, experiences and reason.

Item 1 (Page 21)

  • Fat cells expanding to store energy is an example of structure relating to function.

Item 2 (Page 22)

  • Red blood cells being shaped like smooth discs allows them to flow efficiently through blood vessels, fulfilling their function of carrying oxygen.

Item 3 (Page 23)

  • The spongy structure of lungs allows for maximum gas exchange with the environment.

Item 4 (Page 24)

  • Broad flat leaves on plants are an example of structure (leaf shape) matching function (light absorption) but not being the best structure for all conditions.

Item 5 (Page 25)

  • The stomach’s lining being acid-resistant relates to the function of digesting food in harsh acidic conditions.

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Description

This quiz covers essential concepts in ecology and biology, including responses to environmental changes, heredity, and ecological levels of organization. It also explores the adaptations of species like polar bears and the importance of energy in ecosystems. Test your understanding of these vital biological principles.

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