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36 Cards in this Set
- Front
- Back
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Use an example to explain why the common names of organisms are sometimes confusing. How can
using scientific names help avoid the confusion? |
Explain
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A person tells you that two organisms belong to the same family but to different classes.Can that information be correct? Explain.
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Explain
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Explain the difference between a population and a community.
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Explain
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Classify these examples of symbiosis by type and explain your choice: 1) Inside a human's intestine live bacteria that make vitamin K; 2) A human picks up bacteria on his or her hands.The bacteria do not cause disease but do feed on the human's dead skin cells; 3) A tick attaches itself to a human and feeds on the human's blood.
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Explain
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Explain why decomposers are essential to life on Earth.
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Explain
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Explain how water can be a means of dispersal for plants but can limit the dispersal of animals.
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Explain.
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Explain the differences among a threatened species, an endangered species, and an extinct species.
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Explain
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Define habitat preservation and give at least two examples.
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Explain
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Organisms are living things. All living things share six important
characteristics. What are they? |
All living things have:
- a cellular organization, - contain similar chemicals, - use energy, - respond to their surroundings, - grow and develop, and - reproduce. |
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A ____ is the basic unit of structure and function in an organism.
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cell
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Multicellular organisms are composed of ______.
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many cells that are specialized.
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Unicellular, or single-celled, organisms include _____, the most numerous organisms on Earth.
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bacteria
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Cells are composed of ______.
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chemicals
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The most abundant chemical in cells is _____.
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water
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Another chemical called ______ is a cell's energy source.
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carbohydrate
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_____ and _____ are the building materials of cells.
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Proteins, lipids
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______ are the genetic materials that direct the cell's activities.
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Nucleic acids
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The cells of organisms use energy to ____ and _____ _____ _____.
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grow and repair injured parts
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A change in an organism's surroundings that causes the organism to react is called a _____.
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stimulus
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An organism reacts to a stimulus with a _____ -an action or change in behavior.
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response
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Living things grow and develop. (T or F)
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True.
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Growth is the process of _____.
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becoming larger
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Development is ______.
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the process of change that occurs during an organism's life to produce a more complex organism.
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Another characteristic of organisms is the ability to reproduce, or
________. |
produce offspring thatare similar to the parents
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Living things arise from living things through ______.
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reproduction
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People once believed the mistaken idea that living things arise from
nonliving sources-an idea called _____ _____. |
spontaneous generation
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_____ _____ helped disprove spontaneous generation.
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Controlled experiments
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In a controlled experiment, a scientist carries out two tests that are identical in every respect except for ____.
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one factor, called the variable
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All organisms need four things to stay alive. Name them.
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All living things must
satisfy their basic needs for water, food, living space, and stable internal conditions. |
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Organisms that make their own food are called _____.
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autotrophs
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Organisms that cannot make their own food are called _____.
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heterotrophs
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Heterotrophs consume _____.
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autotrophs or other heterotrophs
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All organisms need ____, ____, and ____ .
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food, water, and living space
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Because space on earth is limited, some organisms ____.
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Compete for food and space
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Organisms must be able to keep the conditions inside their bodies constant because ______.
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Conditions in their surroundings can change.
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The maintenance of stable internal conditions despite changes in surroundings is called ______.
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Homeostasis.
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