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CHEM 210 - MODULE 3 EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
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20 standard amino acids exist, monomers used as building blocks
contain amine & carboxylic acid group connected to alpha carbon
same HN3, CH, COO- groups, different R side chain
at physiological pH 7.4, ~all carboxylic acid groups lose the COOH hydrogen
and have an extra proton (NH3+)
Select the correct term
1hemoglobin 2amino acids
3glycine 4transition state
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Terms in this set (107)
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, 3/23/25, 7:21 CHEM 210 - Module 3 Flashcards |
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proteins
most important macromolecule
- perform most of the work in cells
- transport
- hormones
protein functions - catalysis
- structure
- protection
transport proteins help move molecules around cell & organism (eg. hemoglobin)
blood-based protein that carries O2 from lungs to tissue
hemoglobin
- quaternary tetramer
hormones communicate messages b/w cells (eg. relaxin)
protein hormone that helps women during childbirth by relaxing pelvic ligaments to
relaxin
make delivery easier
catalysis enzymes speed up chemical reactions (eg. protease)
enzyme that breaks down proteins in cells to help organisms recycle unneeded
protease proteins
- also added to laundry detergent to degrade stains w/ protein (blood, food)
structure proteins give strength to cells, organelles, tissues (eg. collagen)
collagen structural protein found in cartilage, skin, and tendons
human body protects itself from outside proteins & toxins by making proteins
protection
called antibodies
antibodies fight foreign invaders
20 standard amino acids exist, monomers used as
building blocks
- contain amine & carboxylic acid group
connected to alpha carbon
amino acids
- same HN3, CH, COO- groups, different R side
chain
- at physiological pH 7.4, ~all carboxylic
acid groups lose the COOH hydrogen and
have an extra proton (NH3+)
20 side chains; differ in composition, size, & charge
R side chain
- grouped by charge, size, & polarity
straight chain amino acids
- small so they can interact w/ other groups
- often found in protein interior
- glycine
nonpolar aliphatics - alanine
- valine
- proline
- leucine
- isoleucine
- methionine
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