Portage Learning - CH210 Biochem
Exam 3 Questions & Answers (Grade A+)
Why are proteins the most important macromolecule? -
correct answer ✅They perform most of the work in cells.
How many different proteins are found in humans? -
correct answer ✅At least 20,000 different proteins
What are some functions of proteins? -
correct answer ✅Transport
Hormones
Catalysis
Structure
Protection
Transport -
correct answer ✅Proteins help to move molecules around the cell
and organism.
i.e. hemoglobin - blood based protein that carries oxygen from the
lungs to the tissues
,Portage Learning - CH210 Biochem
Exam 3 Questions & Answers (Grade A+)
Hormones -
correct answer ✅these molecules communicate messages
between cells
i.e. relaxin - a protein that helps women during childbirth by
relaxing pelvic ligaments to make delivery easier
Catalysis (proteins also known as enzymes) -
correct answer ✅speed up chemical reactions
i.e. protease - breaks down proteins in cells and help organisms
recycle unneeded proteins; also added to laundry detergent to
degrade stains with protein (blood, food)
Structure -
correct answer ✅give strength to cells, organelles, and tissues
i.e. collagen - found in cartilage, skin, and tendons
Protection -
correct answer ✅ability to fight foreign invaders (outside proteins
and toxins)
i.e. antibodies
, Portage Learning - CH210 Biochem
Exam 3 Questions & Answers (Grade A+)
Amino acids -
correct answer ✅monomers used as building blocks
contain both an amine functional group and a carboxylic acid
functional group; both functional groups are connected to an alpha
carbon
What permits all amino acids to link together in a protein? -
correct answer ✅each amino acid has the same HN3, CH, COO-
groups
What makes amino acids unique? -
correct answer ✅the unique part of each amino acid is indicated
by the R, which is called the side chain
side chains differ in composition, size, and charge
while each amino acid has a different side chain, they can be
classified by their commonality in structure
its is common to group the side chains by charge, size, and polarity
True or False: All proteins are constructed from the same 20 amino
acids -
correct answer ✅True
Exam 3 Questions & Answers (Grade A+)
Why are proteins the most important macromolecule? -
correct answer ✅They perform most of the work in cells.
How many different proteins are found in humans? -
correct answer ✅At least 20,000 different proteins
What are some functions of proteins? -
correct answer ✅Transport
Hormones
Catalysis
Structure
Protection
Transport -
correct answer ✅Proteins help to move molecules around the cell
and organism.
i.e. hemoglobin - blood based protein that carries oxygen from the
lungs to the tissues
,Portage Learning - CH210 Biochem
Exam 3 Questions & Answers (Grade A+)
Hormones -
correct answer ✅these molecules communicate messages
between cells
i.e. relaxin - a protein that helps women during childbirth by
relaxing pelvic ligaments to make delivery easier
Catalysis (proteins also known as enzymes) -
correct answer ✅speed up chemical reactions
i.e. protease - breaks down proteins in cells and help organisms
recycle unneeded proteins; also added to laundry detergent to
degrade stains with protein (blood, food)
Structure -
correct answer ✅give strength to cells, organelles, and tissues
i.e. collagen - found in cartilage, skin, and tendons
Protection -
correct answer ✅ability to fight foreign invaders (outside proteins
and toxins)
i.e. antibodies
, Portage Learning - CH210 Biochem
Exam 3 Questions & Answers (Grade A+)
Amino acids -
correct answer ✅monomers used as building blocks
contain both an amine functional group and a carboxylic acid
functional group; both functional groups are connected to an alpha
carbon
What permits all amino acids to link together in a protein? -
correct answer ✅each amino acid has the same HN3, CH, COO-
groups
What makes amino acids unique? -
correct answer ✅the unique part of each amino acid is indicated
by the R, which is called the side chain
side chains differ in composition, size, and charge
while each amino acid has a different side chain, they can be
classified by their commonality in structure
its is common to group the side chains by charge, size, and polarity
True or False: All proteins are constructed from the same 20 amino
acids -
correct answer ✅True
