BIO 1313-05, EXAM 1-4

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 these organisms represent a(n)

• Species

• community

• ecosystem

• population

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NGSS.HS-LS2-6

Which is the correct order of hierarchical levels of living systems?

• cell,organelle,organs,ecosystems,population

• cell,molecule,population,ecosystem,biosphere

• cell,organisms,population,community,ecosystem

• species,community,population,ecosystem,biosphere

The kingdom Fungi includes species

• that obtain food by decomposing dead organisms and absorbing the nutrients.

• such as mushrooms and plants

• that obtain food by ingesting other organisms

• that use photosynthesis to obtain food

Which statement about genetics is True?

• Each DNA molecule is a single strand of nucleotides

• Differences among organisms reflect different nucleotides sequences in their DNA

• Genes are proteins that produce DNA

• DNA is made up of six different kinds of nucleotides

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NGSS.HS-LS3-2

Which of the following statements is not consistent with Darwin's theory of natural selection?

• Factors in the environment result in some organism having better reproductive success than others

• Individual organism experience genetic change during their life span to better fit their environment

• Natural section can lead to the appearance of new species

• Individuals in a population exhibit variations, some of which are passed from [parents to offs[ring

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NGSS.HS-LS4-2

NGSS.HS-LS4-4

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

• be just a susceptible to that antibiotic as was the previous generation

• die out due to the drastic decrease in population size.

• be more contagious that the prior generation

• be more resistant to that antibiotic

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NGSS.HS-LS4-2

NGSS.HS-LS4-4

What is a hypothesis?

• A fact

• the same thing as a theory

• a possible explantion

• an untestable idea

• a verifiable explanation

A theory is an

• description of a belief that invokes the supernatural

• idea that had been proven

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

• concept in the early stages that still needs to be tested

A scientist performs a controlled experiment. This means that

• the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reaction and process all experimental data

• the experiment is repeated many times to ensure that the results are accurate

• two versions of the experiment are conducted, one differing from the other by only a single variable

• one experiment is performed, but the scientist controls the variables

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NGSS.MS-PS2-2

The four most common elements in living organisms are

• C,N,O,Na

• C,H,O,N

• C,H,O,Na

• C,H,O,Fe