Biology Praxis Exam Questions With Correct
Answers
Primary function of Carbohydrates - CORRECT ANSWER✔✔-quick fuel and short-
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term energy storage.
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Lipid - CORRECT ANSWER✔✔-Energy-rich organic compounds, such as fats, oils,
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and waxes, that are made of carbon, hydrogen, and oxygen. Can act as chemical
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messengers
nucleic acids - CORRECT ANSWER✔✔-biological macromolecules that carry
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genetic information that is passed on from parent to offspring. They contain the
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"blueprints" needed to make proteins that result in different traits.
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Molecular structure of albumin - CORRECT ANSWER✔✔-folded chain of amino
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acids
Monosaccharides - CORRECT ANSWER✔✔-building blocks of sugars and contain| | | | | | | | |
carbon, hydrogen, and oxygen in their molecular formula.
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Nucleotide - CORRECT ANSWER✔✔-monomer of nucleic acids made up of a 5-
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carbon sugar, a phosphate group, and a nitrogenous base
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Proteins - CORRECT ANSWER✔✔-important macromolecules that play a role in
| | | | | | | | | |
maintaining cell structure. They are also important for cell signaling and
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, catalyzing reactions, and they are crucial in the endocrine and immune systems
| | | | | | | | | | | |
as hormones and antibodies.
| | |
Cohesion - CORRECT ANSWER✔✔-Attraction between molecules of the same
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substance
water's heat capacity - CORRECT ANSWER✔✔-high b/c large amount of heat
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needed to make molecules move faster due to hydrogen bonds
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Why does water freeze at the top first? - CORRECT ANSWER✔✔-Water is less
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dense as a solid than as a liquid, so as ponds freeze, the ice floats at the top and
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the pond freezes from the top-down.
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Why is water such a good dissolvent? - CORRECT ANSWER✔✔-Water is polar,
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which makes it good at dissolving other polar and charged substances.
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Adhesion - CORRECT ANSWER✔✔-An attraction between molecules of different
| | | | | | | | |
substances
Acidic pH - CORRECT ANSWER✔✔-less than 7
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Basic pH - CORRECT ANSWER✔✔-greater than 7
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Monomers that make up polysaccharides - CORRECT ANSWER✔✔-
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monosaccharides
Answers
Primary function of Carbohydrates - CORRECT ANSWER✔✔-quick fuel and short-
| | | | | | | | |
term energy storage.
| |
Lipid - CORRECT ANSWER✔✔-Energy-rich organic compounds, such as fats, oils,
| | | | | | | | | |
and waxes, that are made of carbon, hydrogen, and oxygen. Can act as chemical
| | | | | | | | | | | | | |
messengers
nucleic acids - CORRECT ANSWER✔✔-biological macromolecules that carry
| | | | | | | |
genetic information that is passed on from parent to offspring. They contain the
| | | | | | | | | | | |
"blueprints" needed to make proteins that result in different traits.
| | | | | | | | | |
Molecular structure of albumin - CORRECT ANSWER✔✔-folded chain of amino
| | | | | | | | | |
acids
Monosaccharides - CORRECT ANSWER✔✔-building blocks of sugars and contain| | | | | | | | |
carbon, hydrogen, and oxygen in their molecular formula.
| | | | | | |
Nucleotide - CORRECT ANSWER✔✔-monomer of nucleic acids made up of a 5-
| | | | | | | | | | |
carbon sugar, a phosphate group, and a nitrogenous base
| | | | | | | |
Proteins - CORRECT ANSWER✔✔-important macromolecules that play a role in
| | | | | | | | | |
maintaining cell structure. They are also important for cell signaling and
| | | | | | | | | | |
, catalyzing reactions, and they are crucial in the endocrine and immune systems
| | | | | | | | | | | |
as hormones and antibodies.
| | |
Cohesion - CORRECT ANSWER✔✔-Attraction between molecules of the same
| | | | | | | | |
substance
water's heat capacity - CORRECT ANSWER✔✔-high b/c large amount of heat
| | | | | | | | | | |
needed to make molecules move faster due to hydrogen bonds
| | | | | | | | |
Why does water freeze at the top first? - CORRECT ANSWER✔✔-Water is less
| | | | | | | | | | | | |
dense as a solid than as a liquid, so as ponds freeze, the ice floats at the top and
| | | | | | | | | | | | | | | | | | |
the pond freezes from the top-down.
| | | | |
Why is water such a good dissolvent? - CORRECT ANSWER✔✔-Water is polar,
| | | | | | | | | | | |
which makes it good at dissolving other polar and charged substances.
| | | | | | | | | |
Adhesion - CORRECT ANSWER✔✔-An attraction between molecules of different
| | | | | | | | |
substances
Acidic pH - CORRECT ANSWER✔✔-less than 7
| | | | | |
Basic pH - CORRECT ANSWER✔✔-greater than 7
| | | | | |
Monomers that make up polysaccharides - CORRECT ANSWER✔✔-
| | | | | | |
monosaccharides
