Intro To Biology: Question Preview (ID: 202)

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a) are always subject to revision b) reflect scientific truths c) always result in major scientific breakthroughs d) are tested but never rejected
The energy used by living things on Earth comes from
a) burning fossil fuels b) the sun c) waste products of photosynthesis d) DNA in plant and animal cells
As proposed by Charles Darwin, life on Earth evolves by means of
a) speciation b) mutation c) homeostasis d) natural selection
Segments of DNA molecules that give instructions for development are called
a) nucleic acids b) nucleotides c) genes d) elements
Living things use energy to grow and move in a process called
a) metabolism b) homeostasis c) evolution d) chemical bonds
Living things are made mostly of compounds that contain
a) carbohydrates b) blood c) carbon d) scandium
Polysaccharides are formed
a) from amino acids and nucleotides b) when sugars and proteins react c) when animal fats are hydrogenated d) by linking sugars together
Which of the following is not a characteristic property of life?
a) maintains homeostasis b) uses energy c) undergoes development d) made of cells
Chemical bonds that result from the attraction of oppositely charged ions are called
a) covalent bonds b) molecular bond c) ionic bond d) electronic bond
Which one of the following is not one of the four boiologically important macromolecules?
a) nucleic acids b) carbonates c) protien d) lipids
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