Unit 1: Nature of Biology Colbeck

A change in an organism's surroundings that causes it to react is called

• a stimulus.
• a response.
• development. 
• energy.

Which of the following is a term used to describe all the chemical reactions that take place in a living thing?

• respiration
• mutations
• homeostasis
• metabolism

This image best represents which of the following characterists of life?

• growth

• levels of organization

• ability to reproduce

• composed of cells

• respond to the environment

Identify all of the following that are nonliving.

• Rock

• Oxygen

• Bacteria

• Battery

Which of the following characteristics of living things best explains why your legs and arms get longer and stronger as you get older? 

• living things respond to their environment
• living things maintain internal balance
• living things are made of cells
• living things grow and develop

When you step out into the cold, your body shivers in order to keep its temperature at 98.6F.

• All living things use energy
• All living things contain cells
• All living things maintain homeostasis
• All living things grow

Which characteristic of living things is represented in the picture?

• Share similar chemicals

• Grows and develops

• Responds to stimuli

• Evolves (as a population)

Which characteristic of living things is represented in the picture?

• Respond to stimuli

• Grow and develop

• Evolution

• Made of cells

The parts of the experiment that must be kept the same.

• Constants
• Independent variable

• Dependent variable

• Conclusion

Maya designed an experiment to answer the following question: How does the amount of water given to a lima

bean seed affect how tall it grows?

In this experiment, what variable should Maya CHANGE?

• the amount of water

• the kind of plant

• the type of soil

• the amount of sunlight it gets