K¹² Honors Biology 2.11 Mid-Unit Assessment: The Chemistry Of Life Quiz

25 July 2022
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question
Which statement is true of all organic compounds?
answer
All contain carbon (CORRECT)
question
Which type of bond holds atoms together in a water molecule?
answer
Covalent bond (CORRECT)
question
According to the concept of entropy, what will likely happen to most molecules over time?
answer
They will break down (CORRECT)
question
How is an organic compound different from an inorganic compound?
answer
Organic compounds contain carbon atoms bonded to other atoms (CORRECT)
question
Which statement best explains why a carbon atom can bond with itself easily?
answer
It has four valence electrons (CORRECT)
question
How are hydrogen bonds different from covalent bonds?
answer
Hydrogen bonds are weaker bonds that form from molecules that have a slight positive charge on one side and a slight negative charge on the other (CORRECT)
question
Which type of molecule is fat?
answer
Lipid (CORRECT)
question
Which statement best explains why electrical signlas in the body are often based on ions?
answer
Ions are charged particles (CORRECT)
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Why is carbon present in so many types of molecules?
answer
It can form up to four covalent bonds (CORRECT)
question
Study the diagrams. The dots represent valence electrons orbiting the nucleus if an atom. Which diagram shows the valence electron pattern for a carbon atom?
answer
A (or the one with four small circles on a ring around a ball in the middle) (CORRECT)
question
Atoms of which three elements could bond together to form an organic compound?
answer
carbon, hydrogen, oxygen (CORRECT)
question
Which property of water is likely the most significant in water's role as a universal solvent?
answer
Water molecules have positive and negative sides (CORRECT)
question
Which of the following is a direct result of hydrogen bonding?
answer
Cohesion and adhesion (CORRECT)
question
Refer to the following scenario to answer Questions 14 and 15: Scientists are studying compounds in a newly discovered rain forest plant. The plant produces an unusual substance that local people from the area say acts as an anesthetic. One scientist tested the substance with the chemical indicator Sudan III. If the test is negative, which type of macromolecule is not present in the substance?
answer
Lipid (CORRECT)
question
If another scientist tests the substance using iodine, which macromolecule is the scientist testing for?
answer
Carbohydrate (CORRECT)