Biology Semester 1 Final

How old is the universe?

• 13.7 billion years

• 14.1 billion years

• 6000 years

• 5 billion years

What is one major piece of evidence that the Big Bang theory is correct?

• Astronomers have detected leftover radiation from the Big Bang

• Everything in the universe has remained in the same location for billions of years

• Astronomers have discovered that the universe is no longer expanding

• Astronomers have discovered evidence that the universe will soon begin contracting in a "Big Crunch"

What were the original two elements in our universe?

• Lithium and Carbon
• Hydrogen and Neon
• Helium and Chlorine
• Hydrogen and Helium

A lack of evidence for continental drift prevented many scientists from believing a single supercontinent called _________ existed.

• Glossopteris
• Pangaea
• Gondwanaland
• Mesosaurus

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

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What is the term for each step in the transfer of energy and matter within a biological community?

• energy path
• food web
• trophic level
• food pyramid

An illustration that uses arrows to show the MANY possible directions in which matter and energy can pass through the organisms in an ecosystem.

• Food chain
• Food web
• Energy Pyramid
• Succession Map

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 plants that convert energy from the sun

• decomposer
• primary consumer
• secondary consumer
• producer

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An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

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Organisms that look similar and can produce fertile offspring

• Species
• Fish
• Community
• Trees

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