بايو بايت - BioByte

Q3. In dialysis, the protein solution is placed inside: A. A centrifuge tube B. A chromatography column C. A semipermeable membrane bag D. A dialysis flask

How many levels of protein structural organization are there? A. Two B. Three C. Four D. Five

A protein can perform its biological function only when it is: A. Linear B. Denatured C. Properly folded D. Uncharged

Peptides are considered polyelectrolytes because they: A. Contain only neutral peptide bonds B. Always carry a positive charge C. Can carry both positive and negative charges D. Are insoluble in water

Amino acids that are part of a peptide chain are specifically called: A. Free amino acids B. Monomers C. Aminoacyl residues D. Polypeptides

The side chain of Asparagine is derived from which amino acid? A. Alanine B. Aspartic acid C. Glutamic acid D. Glycine

Threonine participates in enzyme catalysis mainly by acting as a: A. Hydrogen donor B. Electron acceptor C. Hydrophobic stabilizer D. Structural breaker

Tyrosine is biologically important because it is a precursor of: A. Serotonin only B. Melanin, epinephrine, and thyroid hormones C. Dopamine only D. Acetylcholine

Which amino acids are classified as having aromatic R groups? A. Alanine, Valine, Leucine B. Phenylalanine, Tyrosine, Tryptophan C. Serine, Threonine, Asparagine D. Lysine, Arginine, Histidine

Proline is unusual because it contains: A. A primary amino group B. A secondary imino group C. A charged side chain D. An aromatic ring

Alanine differs from glycine primarily because alanine: A. Is aromatic B. Has a methyl (–CH₃) side chain C. Is charged D. Contains sulfur

How many main classes are commonly used to group amino acids based on their R-group properties? A. Three B. Four C. Five D. Twenty

Amino acids that have polar or charged R groups are generally: A. Less soluble in water B. More soluble in water C. Insoluble in aqueous solutions D. Found only in membrane proteins

Which statement correctly describes enantiomers? A. Molecules with the same molecular formula but different functional groups B. Molecules that are identical in structure C. Mirror-image molecules that are not superimposable D. Molecules differing only in charge

اقسم بالله اول مرة نفهمه