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AP Biology Midterm; Questions & Answers 100% Solved

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AP Biology Midterm; Questions & Answers 100% Solved Which of the following best describes what causes water molecules to exhibit properties such as cohesive and adhesive behavior? Correct answer-Water molecules are polar, having partially positive and partially negative ends. Which statement...

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  • August 8, 2024
  • 30
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ap biology midterm
  • questions answers 100 solved

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AP Biology Midterm; Questions & Answers 100% Solved
Which of the following best describes what causes water molecules to exhibit properties such
as cohesive and adhesive behavior? Correct answer-Water molecules are polar, having
partially positive and partially negative ends.




Which statement correctly compares the pH of water to that of other substances?
Correct answer-The pH of water is neutral; it is higher than the pH of acids and lower
than the pH of bases.




The slight negative charge at one end of one water molecule is attracted to the slight positive
charge of another water molecule. What is this attraction called? Correct answer-A
hydrogen bond




Which of the following best explains how water is able to dissolve ionic substances?
Correct answer-The positive and negative charges of the water molecule pull on the
negative and positive ends of the ionic molecule to break them apart.




During winter's freezing temperatures, some plants can remove water from their cells to reduce
the amount of water that will freeze inside them. Why would plants need to do this?
Correct answer-The expansion of excess water as it turns to ice inside the cells would
break the cells apart.




Which of the following best describes how the density of water differs from that of other
substances? Correct answer-The density of water depends on its temperature, unlike
other substances.

,AP Biology Midterm; Questions & Answers 100% Solved
Carbon atoms are able to Correct answer-bond with other carbon atoms to form long
chains




What is true of carbon atoms? Correct answer-They can form up to four covalent bonds.




Carbon atoms can form Correct answer-four single covalent bonds




Why should farmers plant crops that improve the levels of nitrogen in the soil during the
winter? Correct answer-These crops have root nodules that contain bacteria.




Bacteria in the soil convert ammonia into a form that can be reabsorbed by a plant. Which
geochemical cycle does this sequence describe? Correct answer-Nitrogen cycle




Why are bacteria an essential part of the nitrogen cycle? Correct answer-Bacteria are
responsible for fixing nitrogen into usable forms for other organisms.




Carbohydrates are polymers composed of linked monosaccharides. Which of the following is a
true statement about polymers? Correct answer-Proteins, carbohydrates, and nucleic
acids are all polymers.




What process links monomers of carbohydrates? Correct answer-Spontaneous glycosidic
links

, AP Biology Midterm; Questions & Answers 100% Solved
What are the functional units of a monosaccharide? Correct answer-Carbonyl and
hydroxyl groups




Suppose you have an unknown chemical reaction involving carbohydrates. What is one way to
test whether the reaction is dehydration synthesis or hydrolysis reaction? Correct
answer-Determine whether water is formed.




Which of the following correctly lists the functions lipids serve in the body? Correct
answer-Energy storage, cell structure, signaling




One of the properties of cellulose is that it is not soluble in water. What would happen if
cellulose was water-soluble? Correct answer-Cell walls of plants would no longer
maintain their rigid form.




Why is the sequence of nucleotides important to the properties of a nucleic acid? Correct
answer-It retains and transmits important biological information.



Why is the sequence of amino acids important to the properties of a protein and determination
of the protein produced? Correct answer-It determines how the biochemical folds into a
three-dimensional structure.



Why is the sequence of monosaccharides important to the properties of a carbohydrate?
Correct answer-It stores energy and provides structural support for cells.

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