Introduction to Biology

Which of the following is NOT a characteristic of all living things?

• All organisms grow, develop, and reproduce.

• All organisms respond to their environment.

• All organisms are composed of cells.

• All organisms are able to breathe.

All organisms are able to use energy. All the chemical process in an organism is called

• metabolism

• stimulus

• homeostasis

• reproduction

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____________________ is the ability of the organism to maintain a stable internal environment despite changes.

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All plants need water, minerals, carbon dioxide, sunlight and living space. If these needs are not met, plants can not grow properly. A biologist thought that plants would not grow well if too many were planted in a limited area. To test this idea, the biologist set up an experiment. Three containers were filled with equal amounts of potting soil. One bean seed was planted in Container 1, five seeds were planted in Container 2, and ten seeds were planted in Container 3. All three containers were placed in a well lit room. Each container received the same amount of water every day for two weeks. The biologist measured the heights of the growing plants every day. Then the average height of the plants in each container each day was calculated and recorded in a table.

What is the control group in this experiment?

• Container 1 with only 1 seed.

• Container 2 with 5 seeds.

• Container 3 with 10 seeds.

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NGSS.MS-LS2-1

All plants need water, minerals, carbon dioxide, sunlight and living space. If these needs are not met, plants can not grow properly. A biologist thought that plants would not grow well if too many were planted in a limited area. To test this idea, the biologist set up an experiment. Three containers were filled with equal amounts of potting soil. One bean seed was planted in Container 1, five seeds were planted in Container 2, and ten seeds were planted in Container 3. All three containers were placed in a well lit room. Each container received the same amount of water every day for two weeks. The biologist measured the heights of the growing plants every day. Then the average height of the plants in each container each day was calculated and recorded in a table.

What is the independent variable in this experiment?

• The height of the growing plants.

• The number of seeds.

• The amount of light.

• The amount of water.

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

All plants need water, minerals, carbon dioxide, sunlight and living space. If these needs are not met, plants can not grow properly. A biologist thought that plants would not grow well if too many were planted in a limited area. To test this idea, the biologist set up an experiment. Three containers were filled with equal amounts of potting soil. One bean seed was planted in Container 1, five seeds were planted in Container 2, and ten seeds were planted in Container 3. All three containers were placed in a well lit room. Each container received the same amount of water every day for two weeks. The biologist measured the heights of the growing plants every day. Then the average height of the plants in each container each day was calculated and recorded in a table.

What is the dependent variable in this experiment?

• The height of the growing plants.

• The number of seeds.

• The amount of light.

• The amount of water.

What is the basic unit of life?

• Metabolism

• Molecule

• Cells

• Stimulus

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How is a response different then a stimulus?

• A stimulus is a condition that causes a reaction (the response)

• A stimulus is a reaction to the response.

• A stimulus and response are the same thing.

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Which of the following are considered qualitative data?

• He has blue eyes.

• The girl is 3 ft tall.

• The notebook is old.

• The bread is moldy.

• The book weighs 5 pounds.

A ________________ is an educated guess based on prior knowledge and observation.