BIO 101 Chapter 1: A View of Life Quiz

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Questions and Answers

How many plant and animal types are believed to be on the planet?

  • Around 900,000
  • Around 1.2 million
  • Around 10 million (correct)
  • Around 5 million

What is biodiversity?

  • The classification of different domains of life
  • The process of evolution in living organisms
  • The study of different animal species
  • The variety of life on Earth, including plants, microbes, animals, and people (correct)

Which of the following is NOT a learning outcome mentioned in the text?

  • Biological organization
  • Characteristics of Living organisms
  • Definition and Significance of Biology
  • Classification of animal species (correct)

What is the significance of biology as mentioned in the text?

<p>Contributing to the high standard of living (A)</p> Signup and view all the answers

How many species have been located and described thus far?

<p>Around 1.2 million (B)</p> Signup and view all the answers

What are the three domains of life referred to in the text?

<p>Bacteria, Archaea, and Eukarya (A)</p> Signup and view all the answers

What is the main source of all energy on earth?

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

In an ecosystem, chemical cycling and energy flow begin when plants use solar energy and inorganic nutrients to produce their own food. What is this process called?

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

Which term describes the ability of an organism to maintain its internal environment stable despite changes in the external environment?

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

What is the basic unit of life?

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

Which type of organisms are made up of more than one cell?

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

What is the process by which some organisms capture solar energy from the sun and transform it into chemical energy?

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

What is the phenotypic response to an environmental change called?

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

What is the ability to recognize that something in an organism's surroundings has changed and respond to it quickly called?

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

What determines an organism’s structures and functions?

<p>Genetic information encoded in DNA (B)</p> Signup and view all the answers

What is the significance of biology as mentioned in the text?

<p>Contributing to high living standards (C)</p> Signup and view all the answers

Approximately how many plant and animal types are believed to be on the planet?

<p>Around 9 million (B)</p> Signup and view all the answers

Which term refers to the great variety of life on Earth?

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

What is the basic unit of life?

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

Which term describes the ability of an organism to maintain its internal environment stable despite changes in the external environment?

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

What is the process by which some organisms capture solar energy from the sun and transform it into chemical energy?

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

In an ecosystem, what is the process called when plants use solar energy and inorganic nutrients to produce their own food?

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

What is the main source of all energy on earth?

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

What term describes the ability of an organism to maintain its internal environment stable despite changes in the external environment?

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

How do unicellular organisms, such as bacteria, differ from multicellular organisms like humans?

<p>Unicellular organisms are made of one cell (A)</p> Signup and view all the answers

Which of the following is a phenotypic response to an environmental change?

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

What is the ability to recognize that something in an organism's surroundings has changed and respond to it quickly called?

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

In an ecosystem, what is the process called when chemicals and energy are passed from one population to another in a food chain?

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

What do plants called succulents do to adapt to life in dry, hot deserts?

<p>They store water in their stems and leaves (A)</p> Signup and view all the answers

What is the genetic material that encodes an organism’s structures and functions?

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

What is the term for genetic changes in a population over time producing a new population?

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

Flashcards

What is biodiversity?

The variety of life on Earth, including plants, microbes, animals, and people.

Estimated plant and animal types?

Around 10 million.

Three Domains of Life

Bacteria, Archaea, and Eukarya.

Main energy source on Earth?

The sun.

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What is photosynthesis?

Plants use solar energy and inorganic nutrients to produce their own food.

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What is homeostasis?

The ability of an organism to maintain its internal environment stable despite changes in the external environment.

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Basic unit of life?

Cell

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Multicellular Organisms

Humans

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Photosynthesis process?

Organisms capture solar energy and transform it into chemical energy.

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Adaptation definition?

Phenotypic response to an environmental change.

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What is Irritability?

Ability to recognize and respond to environmental changes.

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Determines organism's structure?

Genetic information encoded in DNA.

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Unicellular organisms

Unicellular organisms are made of one cell.

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Chemical cycling

Chemicals and energy are passed from one population to another in a food chain.

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What is Evolution?

Genetic changes in a population over time resulting in a new population

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Study Notes

Biodiversity and Biology

  • Biodiversity refers to the great variety of life on Earth, with an estimated 8.7 million plant and animal types believed to be on the planet.
  • Biology is the study of life and living organisms, and is significant because it helps us understand how to maintain and preserve life on Earth.

Energy and Ecosystems

  • The main source of all energy on earth is the sun.
  • In an ecosystem, chemical cycling and energy flow begin when plants use solar energy and inorganic nutrients to produce their own food through the process of photosynthesis.
  • Energy is passed from one population to another in a food chain through the process of energy flow.

Organisms and Environment

  • The ability of an organism to maintain its internal environment stable despite changes in the external environment is called homeostasis.
  • The ability to recognize that something in an organism's surroundings has changed and respond to it quickly is called a response to stimuli.
  • The phenotypic response to an environmental change is called adaptation.
  • Unicellular organisms, such as bacteria, differ from multicellular organisms like humans in that they consist of a single cell.
  • Plants called succulents adapt to life in dry, hot deserts by storing water in their leaves and stems.

Genetics and Evolution

  • The genetic material that encodes an organism's structures and functions is DNA.
  • Genetic changes in a population over time producing a new population is called evolution.
  • The basic unit of life is the cell.
  • Organisms made up of more than one cell are called multicellular organisms.

Photosynthesis and Energy

  • Photosynthesis is the process by which some organisms capture solar energy from the sun and transform it into chemical energy.
  • Plants use solar energy and inorganic nutrients to produce their own food through photosynthesis.

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