31 Questions
How many plant and animal types are believed to be on the planet?
Around 10 million
What is biodiversity?
The variety of life on Earth, including plants, microbes, animals, and people
Which of the following is NOT a learning outcome mentioned in the text?
Classification of animal species
What is the significance of biology as mentioned in the text?
Contributing to the high standard of living
How many species have been located and described thus far?
Around 1.2 million
What are the three domains of life referred to in the text?
Bacteria, Archaea, and Eukarya
What is the main source of all energy on earth?
The sun
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?
Photosynthesis
Which term describes the ability of an organism to maintain its internal environment stable despite changes in the external environment?
Homeostasis
What is the basic unit of life?
Cell
Which type of organisms are made up of more than one cell?
Humans
What is the process by which some organisms capture solar energy from the sun and transform it into chemical energy?
Photosynthesis
What is the phenotypic response to an environmental change called?
Adaptation
What is the ability to recognize that something in an organism's surroundings has changed and respond to it quickly called?
Irritability
What determines an organism’s structures and functions?
Genetic information encoded in DNA
What is the significance of biology as mentioned in the text?
Contributing to high living standards
Approximately how many plant and animal types are believed to be on the planet?
Around 9 million
Which term refers to the great variety of life on Earth?
Biodiversity
What is the basic unit of life?
Cell
Which term describes the ability of an organism to maintain its internal environment stable despite changes in the external environment?
Homeostasis
What is the process by which some organisms capture solar energy from the sun and transform it into chemical energy?
Photosynthesis
In an ecosystem, what is the process called when plants use solar energy and inorganic nutrients to produce their own food?
Photosynthesis
What is the main source of all energy on earth?
Solar energy
What term describes the ability of an organism to maintain its internal environment stable despite changes in the external environment?
Homeostasis
How do unicellular organisms, such as bacteria, differ from multicellular organisms like humans?
Unicellular organisms are made of one cell
Which of the following is a phenotypic response to an environmental change?
Adaptation
What is the ability to recognize that something in an organism's surroundings has changed and respond to it quickly called?
Irritability
In an ecosystem, what is the process called when chemicals and energy are passed from one population to another in a food chain?
Chemical cycling
What do plants called succulents do to adapt to life in dry, hot deserts?
They store water in their stems and leaves
What is the genetic material that encodes an organism’s structures and functions?
DNA
What is the term for genetic changes in a population over time producing a new population?
Evolution
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.
Test your knowledge of the introductory concepts in biology with this quiz covering the definition and significance of biology, characteristics of living organisms, biological organization, and biodiversity. Explore the three domains of life and challenge your understanding of the fundamental principles of biology.
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