Bio test #1

4) Which statement about ecosystems is false? A) Bacteria and fungi recycle energy within an ecosystem. B) Plants and other photosynthetic organisms are producers in ecosystems. C) Chemical nutrients cycle within an ecosystem. D) In the process of energy conversions within an ecosystem, some energy is converted to heat.

A

Organisms belonging to the kingdom Plantae A) are photosynthetic. B) obtain food by decomposing the remains of dead organisms and absorbing the nutrients. C) are unicellular.

A

The role of a control in an experiment is to A) provide a basis of comparison to the experimental group. B) prove that a hypothesis is correct. C) ensure repeatability.

A

Which of the following is a group within the domain Eukarya? A) Fungi B) Archaea C) Bacteria

A

A hypothesis is A) the same as a theory. B) a proposed explanation for a set of observations. 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.

B

An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria to A) be just as susceptible to that antibiotic as was the previous generation. B) be more resistant to that antibiotic. C) die out due to the drastic decrease in population size.o D) be more contagious than the prior generation.

B

Which of the following statements is not consistent with Darwin's theory of natural selection? A) Individuals in a population exhibit variations, some of which are passed from parents to offspring. B) Individual organisms experience genetic change during their life spans to better fit their environment. C) Factors in the environment result in some organisms having better reproductive success than others. D) Natural selection can lead to the appearance of new species.

B

5) Which statement about genetics is true? A) Genes are proteins that produce DNA. B) DNA is made up of six different kinds of nucleotides. C) Differences among organisms reflect different nucleotide sequences in their DNA. D) Each DNA molecule is a single strand of nucleotides.

C

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

C

If you eat a hamburger, you are mainly eating ground-up beef muscle. What levels of organization are represented in this ground-up muscle? A) organism, population, and community B) organ, organ system, and organism C) organelle, cell, and tissue D) tissue, organ, and organ system

C

You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new sweatshirt style. This is an example of a(n) A) experimental question. B) type of observation. C) hypothesis. D) experiment.

C

1) Life is organized in a hierarchical fashion. Which sequence correctly lists that hierarchy from least inclusive to most inclusive? A) ecosystem, population, organ system, cell, community, molecule, organ, organism, organelle, tissue B) cell, molecule, organ system, organ, organelle, population, tissue, organism, ecosystem, community C) molecule, cell, organism, organ system, tissue, population, organ, organelle, community, ecosystem D) molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem

D

2) Which statement best describes the relationship between a tissue and an organ system? A) The tissue level of organization is more inclusive than the organ system level. B) Tissues are not composed of cells; organ systems are composed of cells. C) A tissue cannot exist unless it is a component of an organ system, whereas an organ system can exist independently of tissues. D) An organ system includes tissues.

D

6) The kingdom Fungi includes species A) such as mushrooms and plants. B) that obtain food by ingesting other organisms. C) that use photosynthesis to obtain food. D) that obtain food by decomposing dead organisms and absorbing the nutrients.

D

A theory is a(n) A) idea that has been proven. B) concept in the early stages that still needs to be tested. C) description of a belief that invokes the supernatural. D) explanation of an idea that is broad in scope and supported by a large body of evidence.

D

The teeth of grain-eating animals (such as horses) are usually broad and ridged. This makes the teeth suitable for grinding and chewing. Meat-eating animals (such as lions) have pointed teeth that are good for puncturing and ripping flesh. This illustrates A) a result of natural selection only. B) the connection between form and function only. C) a food web. D) a result of natural selection as well as the connection between form and function.

D

To be scientifically valid, a hypothesis must be A) part of a theory. B) controlled. C) reasonable. D) testable and falsifiable.

D

Which statement about evolution is true? A) Individuals evolve within the span of their own lifetimes. B) Organisms evolve structures in response to needs. C) Evolution is deliberate and purposeful. D) Evolution can result in adaptations.

D

. Basic science discoveries often lead to the development of technology, and the development of technology often leads to new scientific discoveries. Which of the following is not an accurate pairing of a technology and a discovery? A) measurement of atmospheric CO2 and understanding of climate change B) sequencing of genomes and understanding evolutionary relationships among organisms C) genetic engineering and creation of new drugs D) invention of the microscope and creation of evolutionary trees

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