AP Biology Midterm Exam Questions and Answers 100% Pass | Graded A+
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Course
AP Biology
Institution
AP Biology
AP Biology Midterm Exam Questions
and Answers 100% Pass | Graded A+
Which of the following best describes what causes water molecules to
exhibit properties such as cohesive and adhesive behavior? - Water
molecules are polar, having partially positive and partially negative ends.
Which statemen...
Which of the following best describes what causes water molecules to
exhibit properties such as cohesive and adhesive behavior? - ✔✔Water
molecules are polar, having partially positive and partially negative ends.
Which statement correctly compares the pH of water to that of other
substances? - ✔✔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? - ✔✔A hydrogen bond
Which of the following best explains how water is able to dissolve ionic
substances? - ✔✔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? - ✔✔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? - ✔✔The density of water depends on its
temperature, unlike other substances.
Carbon atoms are able to - ✔✔bond with other carbon atoms to form long
chains
What is true of carbon atoms? - ✔✔They can form up to four covalent
bonds.
Carbon atoms can form - ✔✔four single covalent bonds
Why should farmers plant crops that improve the levels of nitrogen in the
soil during the winter? - ✔✔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? -
✔✔Nitrogen cycle
Why are bacteria an essential part of the nitrogen cycle? - ✔✔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? - ✔✔Proteins,
carbohydrates, and nucleic acids are all polymers.
What process links monomers of carbohydrates? - ✔✔Spontaneous
glycosidic links
What are the functional units of a monosaccharide? - ✔✔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? - ✔✔Determine whether water is formed.
Which of the following correctly lists the functions lipids serve in the body? -
✔✔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? - ✔✔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? - ✔✔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? - ✔✔It determines how the
biochemical folds into a three-dimensional structure.
Why is the sequence of monosaccharides important to the properties of a
carbohydrate? - ✔✔It stores energy and provides structural support for
cells.
How do components of a DNA molecule influence its physical properties? -
✔✔Deoxyribose and phosphate, linked by phosphodiester bonds, form
repeating units to make up the backbone of DNA.
How do RNA's subcomponents affect its properties? - ✔✔Base pairing
occurs within an RNA molecule to give RNA the three-dimensional shape
needed for specific functions.
What is the relationship between the sequence of DNA's subcomponents
and the properties of DNA? - ✔✔The nitrogenous base sequence along a
segment of DNA determines the amino acid sequence that will be
produced.
Which of the following organelles contributes to cell functions by processing
proteins? - ✔✔Golgi Apparatus
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