Exploring Life's Essential Characteristics

Which of the following best describes cellular organization in living organisms?

• All living organisms are made up of a single cell.

• Living organisms are composed of one or more cells, which are the basic units of life.

• Cells in living organisms do not have any specific structure.

• Cellular organization is not a characteristic of life.

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What is metabolism in the context of living organisms?

• The process of cell division.

• The sum of all chemical reactions that occur within an organism to maintain life.

• The ability to move from one place to another.

• The process of photosynthesis only.

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Which of the following statements is true about growth and development in living organisms?

• Growth and development are the same processes.

• Growth refers to an increase in size, while development refers to changes in the organism over time.

• Development only occurs in plants.

• Growth is not a characteristic of life.

How do living organisms reproduce and pass on hereditary information?

• Through the process of mitosis only.

• By producing offspring that inherit genetic material from one or both parents.

• By cloning themselves without any genetic variation.

• By absorbing genetic material from the environment.

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What is the role of response to stimuli in living organisms?

• It allows organisms to remain static in their environment.

• It enables organisms to react to changes in their environment to survive.

• It is only important for plants.

• It is not a characteristic of life.

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Which of the following best describes homeostasis in living organisms?

• The ability to change their internal environment to match the external environment.

• The maintenance of a stable internal environment despite external changes.

• The process of growing and developing.

• The ability to reproduce.

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What is the primary source of energy for most living organisms?

• Water

• Sunlight

• Oxygen

• Carbon dioxide

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Which of the following is an example of a stimulus that a living organism might respond to?

• A change in temperature

• The presence of water

• The availability of food

• All of the above

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What is the significance of DNA in heredity?

• DNA is not involved in heredity.

• DNA carries genetic information that is passed from parents to offspring.

• DNA is only important for cellular respiration.

• DNA is a type of protein.

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Which of the following processes is an example of homeostasis?

• A plant growing towards light.

• Sweating to cool down the body.

• A bird migrating south for the winter.

• A fish swimming upstream.