Biology Unit 2 – Macromolecules UPDATED Actual Exam Questions and CORRECT Answers
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Course
Macromolecules
Institution
Macromolecules
Biology Unit 2 – Macromolecules
UPDATED Actual Exam Questions and
CORRECT Answers
Amino acids are the monomers of proteins. Which functional group in the amino acid
determines its specific shape and function? - CORRECT ANSWER- R group
In humans, excess blood glucose is stored in the liver ...
Biology Unit 2 – Macromolecules
UPDATED Actual Exam Questions and
CORRECT Answers
Amino acids are the monomers of proteins. Which functional group in the amino acid
determines its specific shape and function? - CORRECT ANSWER- ✔✔R group
In humans, excess blood glucose is stored in the liver and in muscle tissue in the form of
glycogen. Glycogen is a long chain of glucose molecules bonded together. Because of this,
glycogen is called a _____________________. - CORRECT ANSWER- ✔✔polysaccharide
Receptors that are __________ bind to chemicals outside of the cell, and this binding process
causes a chemical response on the inside of cells. - CORRECT ANSWER- ✔✔proteins
Steroids are classes of lipids that include cholesterol, sex hormones, and cortisone. Steroids
are not hydrocarbon chains like triglycerides, but instead contain four fused carbon rings.
Although steroids can bond to fatty acids, steroid molecules do not contain a fatty acid chain,
and the monomer of a steroid biomolecule is difficult to define. Which of these does NOT
correctly pair a steroid and its function? - CORRECT ANSWER- ✔✔Cholesterol is an
energy source.
Students in biology are studying the macromolecules of life. They used a calorimeter to
determine the calories in various types of food. Once the lab was completed, the students ate
the left over food samples. Monica commented that in just 6 or 7 "chews" of the saltine, it
was gone; nothing but a sticky paste in her mouth. Elaborate on what happened chemically
while chewing the saltine. Include the macromolecules present. - CORRECT ANSWER-
✔✔The saltine is a carbohydrate. and digestion took place in Monica's mouth thanks to
enzymes or proteins. The blueprint for these proteins is located on nucleic acids
The biomolecule described is a
· cell membranes
· large biomolecule
· many high energy bonds
· nonpolar covalent bonds
· includes waxes and steroids
, · consists mainly of carbon and hydrogen
· more energy per gram than other biomolecules - CORRECT ANSWER- ✔✔lipid
The level of protein structure that involves interactions between the side chains of the amino
acids rather than interactions between molecules within the backbone is: - CORRECT
ANSWER- ✔✔tertiary
The molecular sequence, or blueprint for a protein, is originally carried by which molecule? -
CORRECT ANSWER- ✔✔DNA
This is a nucleotide. If C is uracil, B is _______________ and the nucleotide comprises
_____________. - CORRECT ANSWER- ✔✔ribose; RNA
Which of these correctly demonstrates the biomolecule with its function? - CORRECT
ANSWER- ✔✔waxes; prevents water loss and repels water
A ___________ chain is a sequence of amino acids that is the foundation for the basic
structure of a protein. - CORRECT ANSWER- ✔✔polypeptide
A food that is high in calories and could be used for energy storage in animals is MOST
LIKELY high in - CORRECT ANSWER- ✔✔lipids.
All BUT one of the following is a component of nucleic acids. Nucleic acids DO NOT
contain - CORRECT ANSWER- ✔✔amino acids
All the biological macromolecules contain Carbon, hydrogen and oxygen. However, most do
not contain nitrogen. The category that contains nitrogen are - CORRECT ANSWER-
✔✔proteins
Amino acids are the building blocks of proteins. Which of these best describes an amino
acid? - CORRECT ANSWER- ✔✔organic
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