In an ecosystem, energy

Question 1 Correct 1.00 points out of 1.00 Flag question Question text In an ecosystem, energy

Select one:

• comes ultimately from bacteria
• cycles along with chemical nutrients
• typically flows from producers through a series of consumers
• typically flows from consumers to producers to decomposers

Question 2 Correct 1.00 points out of 1.00 Flag question Question text Life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy from least inclusive to most inclusive?

Select one:

• organism, organ system, tissue, population, organ, organelle, community, cell,

ecosystem, molecule

• ecosystem, population, organ system, cell, community, molecule, organ, organism,

organelle, tissue

• molecule, organelle, cell, tissue, organ, organ system, organism, population,

community, ecosystem

• cell, molecule, organ system, organ, organelle, population, tissue, organism,

ecosystem, community Question 3 Correct

1.00 points out of 1.00 Flag question Question text Organisms that are prokaryotes are in the domains

Select one:

• plantae and Animalia
• bacteria and Archaea
• fungi and Bacteria
• eukarya and Archaea

Question 4 Correct 1.00 points out of 1.00 Flag question Question text A theory is

Select one:

• an idea that has been proven
• an explanation of an idea that is broad in scope and supported by a large body of

evidence

• a description of a belief that invokes the supernatural
• a concept in the early stages that still needs to be tested

Question 5 Correct 1.00 points out of 1.00

Flag question Question text To be scientifically valid, a hypothesis must be

Select one:

• testable and falsifiable
• controlled
• reasonable
• part of a theory

Question 6 Incorrect 0.00 points out of 1.00 Flag question Question text Members of the kingdom Animalia

Select one:

• are composed of cells that lack a cell membrane
• can obtain their food by eating other organisms
• make their own food through photosynthesis
• can obtain their food either by absorption or by photosynthesis

Question 7 Correct 1.00 points out of 1.00 Flag question

Question text An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria

Select one:

• to die out due to the drastic decrease in population size
• to be more contagious than the prior generation
• to be more resistant to that antibiotic
• to be just as susceptible to that antibiotic as was the previous generation

Question 8 Correct 1.00 points out of 1.00 Flag question Question text A scientist performs a controlled experiment. This means that

Select one:

• one experiment is performed, but the scientist controls the variables
• the experiment is repeated many times to ensure that the results are accurate
• two experiments are conducted, one differing from the other by only a single

variable

• the experiment proceeds at a slow pace to guarantee that the scientist can carefully

observe all reactions and process all experimental data Question 9 Correct 1.00 points out of 1.00 Flag question Question text