Alberts Molecular Biology of Cell - Chapter 003 Test Quiz Exam with Correct Answers Key 2023/2024 Verified
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Alberts Molecular Biology of Cell
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Alberts Molecular Biology Of Cell
Alberts Molecular Biology of Cell - Chapter 003 Test Quiz Exam with Correct Answers Key 2023/2024 Verified
Kinesin correct answers ...propels organelles through cytoplasm
Topoisomerase correct answers ...can untangle knotted DNA molecules
Protein (polypeptide) correct answers Made from lon...
Alberts Molecular Biology of Cell - Chapter 003 Test Quiz Exam
with Correct Answers Key 2023/2024 Verified
Kinesin correct answers ...propels organelles through cytoplasm
Topoisomerase correct answers ...can untangle knotted DNA molecules
Protein (polypeptide) correct answers Made from long unbranched chain of amino acids
Polypeptide backbone correct answers Repeating sequence of atoms along core of polypeptide chain is
referred to as...
Van der Waals radius correct answers Atoms behave as if they are hard spheres with a definitive radius
Psi correct answers Rotation around Ca-C bond
Phi correct answers Rotation around N-Ca bond
Cysteine correct answers Disulfide bonds can form between two...side chains
Chaperones correct answers ...often assist in protein folding
Protein domains correct answers Large proteins can contain structural units that fold independently
SH2 correct answers An example of a protein domain in eukaryotes involved in signalling
a helix correct answers Structure found in a-keratin
B sheet correct answers Structure found in fibroin
Parallel correct answers B sheets that run in same direction
Antiparallel correct answers B sheets that run in opposite directions
Coiled coil correct answers a helices wrap around one another to form...
Primary structure correct answers Amino acid sequence is known as...
Secondary structure correct answers Stretches of polypeptides that form a helices & B sheets
constitute...
Tertiary structure correct answers 3D organisation of polypeptide chain referred to as...
Quaternary structure correct answers Molecule formed from multiple polypeptide chains its structure is
known as...
Protein domain correct answers Substructure of polypeptide that folds independently of rest of protein
Serine proteases correct answers Family of proteolytic enzymes inc. digestive enzymes chymotrypsin,
trypsin & elastase
Regulatory proteins correct answers Yeast a2 protein & drosophilia engrailed protein are gene...
Domain shuffling correct answers Evolutionary process through joining of pre-existing domains into new
combos
Binding site correct answers Any region of protein surface that interacts with other molecule non
covalently
Protein subunit correct answers A polypeptide chain in a multi-protein complex is known as a...
Dimer correct answers Symmetric complex of two protein subunits
Globular proteins correct answers Polypeptide chain folds into compact shape like a ball
Actin correct answers Globular protein that forms major filament system of cytoskeleton
Fibrous proteins correct answers Are generally elongated 3D structure & are referred to as...e.g. a-
keratin
a keratin correct answers Dimer of two identical subunits with long a-helices forming coiled coil
Globular domains correct answers Coiled coil regions are capped at each end by...containing binding
sites
Fibrous proteins correct answers Main components of extracellular matrix
Collagen correct answers Most abundant fibrous extracellular protein in animals
Collagen correct answers A triple helix each containing glycine at every 3rd position
Elastin correct answers Disordered extracellular matrix protein
Loops of polypeptide correct answers Proteins often have...protruding from protein core
Disordered tails correct answers Many proteins have intrinsically...at one end of structured domain
Disordered tails correct answers Predominant function of...is covalent modifications triggered by cell
signalling
RNA polymerase correct answers Eukaryotic...that produces mRNA contains long unstructured C-
terminal tail modified during synthesis
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