Environmental Science Chapter 3

What are the four major kinds of organic compounds in living cells?

• Proteins, lipids, carbohydrates, nucleic acids

• Water, oxygen, carbon dioxide, glucose

• Vitamins, minerals, enzymes, hormones

• Sugars, starches, fibers, amino acids

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NGSS.MS-LS1-7

What action did the EPA take in 2010 to address the issues in Chesapeake Bay?

• Banned all fishing activities

• Established total maximum daily loads (TMDLs) for nutrients

• Closed the bay to all human activities

• Increased oyster farming

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which four elements are responsible for more than 96 percent of the mass of most living organisms?

• Carbon, oxygen, nitrogen, hydrogen

• Helium, neon, argon, krypton

• Sodium, potassium, calcium, magnesium

• Iron, copper, zinc, manganese

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NGSS.MS-PS1-1

What is the term for atoms of the same element that differ in atomic mass?

• Isotopes

• Ions

• Molecules

• Compounds

What is the term for a group of atoms bonded together?

• Ion

• Molecule

• Isotope

• Element

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NGSS.MS-PS1-1

What type of bond involves atoms sharing electrons?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

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NGSS.HS-PS1-1

Why is water unique in its ability to exist as a liquid at most temperatures on Earth?

• It has a high specific heat

• It is the only substance that expands when frozen

• It is the only substance that is cohesive

• It is the only substance that is polar

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NGSS.MS-PS1-4

What is the pH level of pure water?

• 5

• 7

• 9

• 11

What is the basic structure of lipids?

• A chain of carbon atoms with attached hydrogen atoms

• A five-carbon sugar with phosphate groups

• A sequence of nucleotides

• A chain of amino acids

What is one of the main advantages of using CRISPR over previous methods of genetic modification?

• It is more expensive and slower

• It is less precise and less predictable

• It is easier, quicker, and less expensive

• It requires larger amounts of DNA

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NGSS.MS-LS4-5