1. Life is organized in a hierarchical fashion
Life is organized in a hierarchical fashion. Which one of the following sequences illustrates that hierarchy as it increases in complexity? A)organism, organ system, tissue, population, organ, community, cell, ecosystem, molecule B)ecosystem, molecule, cell, tissue, organism, organ system, organ, community C)cell, molecule, organ system, organ, population, tissue, organism, ecosystem, community D)ecosystem, population, organ system, cell, community, molecule, organ, organism, tissue E)molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem e

2. The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, two squirrels, and millions of bacteria. Together, all of these organisms represent A)an ecosystem. B)a community. C)a species. D)a population. E)a fun time. b

3. The ultimate source of energy flowing into nearly all ecosystems is
A)wind.
B)sunlight.
C)geothermal vents.
D)radioactivity.
E)electricity. b

4. Which of the following, if any, is not a common cellular activity
Which of the following, if any, is not a common cellular activity? A)Cells take in and use energy. B) Cells respond to the environment. C)Cells develop and maintain complex organization. D)Cells regulate their internal environment. E)All of the choices are common cellular activities E

5. A hypothesis is A)a tentative answer to some question
A hypothesis is A)a tentative answer to some question. B)the same as a theory. C)an explanatory idea that is broad in scope and supported by a large body of evidence. D)a widely accepted idea about a phenomenon. E)a widely accepted theory that is broad in scope and supported by a large body of evidence. A

6. You discover a new microbe while taking samples from a hot spring in Yellowstone National Park. You observe the microbe and even though it is small in comparison to other microbes like bacteria and algae, the new microbe has a nucleus. Your conclusion is that the new microbe is:
A. In kingdom eubacteria because of the small size.
B. In kingdom archae because of the extreme environment in which the new microbe lives.
In Kingdom protista because it is eukaryotic but does not fit the characteristics of microbial fungi.

7. The role of a control in an experiment is to
A)provide a basis of comparison to the experimental group.
B)ensure repeatability.
C)prove that a hypothesis is correct.
D)prove that a hypothesis is correct and ensure repeatability.
E)None of the choices are correct. a

8. To be scientifically valid, a hypothesis must be A)based on faith
To be scientifically valid, a hypothesis must be A)based on faith. B)phrased as a question. C)testable. D)falsifiable. E)testable and falsifiable. e

9. A scientist performs a controlled experiment
A scientist performs a controlled experiment. This means that A)the experiment is repeated many times to ensure that the results are accurate. B)two trials are conducted, one differing from the other by two or more variables. C)the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data. D)one experiment is performed, but the scientist controls the variables. E)two trials are conducted, one differing from the other by only a single variable. e

10. Organisms that are not prokaryotes are in the Domain A)Eukarya
Organisms that are not prokaryotes are in the Domain A)Eukarya. B)Archaea. C)Fungi. D)Bacteria. a