Characteristics of Life

All living organisms maintain homeostasis. They also respond to stimuli. Which of these is another characteristic of all living organisms?

• All living organisms are composed of one or more cells.

• All living organisms must consume food (eat) in order to get energy.

• All living organisms are made up of many cells- each one with specialized organelles.

• All living things reproduce sexually

Jackrabbits have large ears containing many blood vessels. These ears help to cool it on hot days in the desert, and allows it to maintain a constant body temperature. Which characteristic of life is best described by this example?

• All living things grow and develop

• All living things need to get energy to live

• All things maintain homeostasis

• All living things are reproduce

A plant growing towards a sunny window is an example of...

• response to stimuli

• adaptation to the environment

• reproduction

• it being made of one or more cells

Which characteristic of living things describes a population changing over time as a response to environment, like giraffes developing long necks (over generational time) to eat leaves from the high branches of trees?

• adaptation

• development

• reproduction

• growth

Some cells are able to split in two, making copies of themselves. Other species create offspring only when a special cell of the male of the species combines with a specialized cell from the female. Both of these are examples of how ALL living things...

• use energy and create waste

• undergo growth and development

• adapt to the environment

• reproduce

What is the most basic unit of life?

• cell
• tissue
• organ
• organ system

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How do heterotrophs get the energy they need to survive?

• photosynthesis

• eating other organisms

• decomposing dead materials

• chemosynthesis

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Maintaining a stable internal

environment is called

• homeostasis

• equilibrium

• balance

• evenness

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The dismissal bell rings and you pack up your belongings. In this scenario, what is the stimulus?

• The bell ringing
• You packing up your belongings
• More information is needed

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There are four macromolecules that living things are made out of. One of the most important one, which is found in living things are _. These include DNA and RNA and have all the information needed to build the living thing it belongs to

• Nucleic Acids

• Carbohydrates

• Proteins

• Lipids