Practice 10 questions on BIOLOGY124 - BIOLOGY 124 at Stellenbosch University-South Africa. Free AI-generated quiz on uNotes — track your score, retake anytime.
1Which level of protein structure is represented by the specific linear sequence of amino acids linked by peptide bonds, as seen in Ser-Glu-Gly-Asp-Trp-Gln-Leu-His?
2Which of the following molecules serve as the monomers (building blocks) for the synthesis of polypeptides?
3In a cell membrane, when Na+ ions move from an area of low concentration in the cytoplasm to an area of high concentration in the extracellular space, what is required for this process to occur?
4Celery stalks immersed in fresh water become stiff and hard, while those in salt solution become soft. Based on this, we can deduce that celery cells are:
5Cellular respiration uses glucose and oxygen to produce CO2, water, and energy. This reaction is classified as:
6If a specific chemical reaction has a ΔG of -5.6 kcal/mol, it could be coupled to drive which of the following endergonic reactions?
7When glucose monomers are joined together by glycosidic linkages to form cellulose (a polymer), what are the changes in free energy (ΔG), total energy (ΔH), and entropy (ΔS)?
8Which type of bond is primarily responsible for holding together the beta-pleated sheets in the secondary structure of a protein?
9Which of the following components are required to form a nucleotide?
10Which functional group found in the amino acid cysteine is frequently involved in maintaining the tertiary structure of proteins through covalent bonding?
