A multicellular, photosynthetic organism with complex, specialized cells and tissues would most likely be assigned to

Question 1A multicellular, photosynthetic organism with complex, specialized cells and tissues would most likely be assigned to

 

kingdom Fungi.

 

kingdom Plantae.

 

kingdom Protista.

 

domain Archaea.

 

kingdom Animalia.

 

Question 2A possible explanation for a natural event, based on observations and past knowledge, is a

 

phenomenon.

 

hypothesis.

 

theory.

 

variable.

 

control.

 

Question 3Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of

 

natural selection.

 

biodiversity.

 

homeostasis.

 

development.

 

reproduction.

 

Question 4In the late 1800s, Louis Pasteur was searching for a vaccine for anthrax in livestock. One French veterinarian had a local reputation for being able to cure anthrax by applying oils and wrapping the animal in cloth to induce a fever. Pasteur also knew that some animals got well on their own when left untreated. Pasteur tested the effectiveness of the local veterinarian’s methods by injecting four cattle with anthrax bacteria. He then directed the veterinarian to perform his procedures on two cattle. The other two cattle were left alone. What is the rationale for Pasteur’s experimental design?

 

Two cattle represent a test based on inductive reasoning; two serve to test deductive reasoning.

 

The two cattle that are treated are the only test being conducted; the other two cattle serve no purpose beyond representing all the untreated cattle in France.

 

The two cattle not being treated were just a whim on Pasteur’s part.

 

Two cattle represent a test of the treatment; two serve as a control to determine the likelihood of survival without treatment.

 

Two cattle represent a test of the veterinarian’s hypothesis; two represent a test of Pasteur’s hypothesis.

 

Question 5Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life?

 

Living things have levels of hierarchical organization.

 

Living things are adapted to the environment.

 

Living things maintain themselves by homeostasis.

 

Living things grow and develop.

 

Living things respond to stimuli.

 

Question 6The most important factor that determines where major ecosystems are located on the globe is

 

soil type.

 

available vegetation.

 

oxygen levels.

 

climate.

 

political boundaries.

 

Question 7Which of the following is of least importance when concerning the preservation of ecosystems?

 

Humans derive medicines, food, and many important materials from functioning ecosystems.

 

It is estimated that possibly 400 species become extinct each day due to activities of humans.

 

Preservation of ecosystems allows humans to exploit as many resources as possible.

 

Ecosystem preservation maintains the status of species in their current state.

 

Many different organisms perform services that ensure our continued existence.

 

Question 8Which of the following represents a potential threat to biodiversity?

 

Humans clear land for agriculture and housing.

 

Tropical rain forests and coral reefs are found where solar energy is the most abundant.

 

In a food chain, one population feeds on another.

 

Energy flows through an ecosystem, with much lost as heat.

 

People construct artificial reefs to support marine life.

 

Question 9Which of these classification categories contains the closest related group of organisms?

 

kingdom

 

genus

 

family

 

phylum

 

domain

 

Question 10Which statement is false regarding science?

 

scientific conclusions are permanent and never subject to change or refinement.

 

Information is gathered by scientific methods.

 

Information is gained by observing and testing.

 

Science strives to be objective rather than subjective.

 

Science helps us to understand the natural world.

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