Represent condensation between amino acids and explain how repetition forms a polypeptide chain.
Tę umiejętność sprawdza 11 zadań wzorowanych na arkuszach IB z lat 2022–2026.
The model joins three amino acids. Which statements about its product are correct? I. Peptide linkages connect its residues. II. Adding water to break bonds produced the chain. III. Its side chains need not all have the same structure. A. I and III only B. II…
Proteins contribute to structure, recognition and defence. (a) Outline the general organization of a peptide. (b) Describe the four ABO blood groups and their molecular/genetic basis. (c) Explain the adaptive immune response to invading pathogens.
Which process links two amino acids to make a dipeptide? A. Hydrolysis producing a glycosidic bond B. Condensation producing a peptide bond C. Oxidation producing a hydrogen bond only D. Osmosis producing a phosphodiester bond
(a) Describe how proteins are built from their constituent units. (b) Explain hormonal regulation of human blood glucose concentration. (c) Explain how meiosis contributes to genetic variation.
Which pair of highlighted groups can make the peptide link between the two amino acids? A. Q and S B. P and S C. Q and R D. P and R
A model protein contains three separate linear polypeptide chains, each with 24 amino-acid residues. There are no peptide links between chains. How many peptide bonds are present? A. 75 B. 69 C. 71 D. 72
How should the reaction shown be classified? A. Catabolic hydrolysis B. Anabolic condensation C. Anabolic hydrolysis D. Catabolic condensation
Two molecules of this amino acid form a dipeptide by condensation. Which labelled group can be removed from one molecule, combining with hydrogen from the other to form water? A. Group A B. Group B C. Group C D. Group D
Two molecules of this amino acid form a dipeptide by condensation. Which labelled group can be removed from one molecule, combining with hydrogen from the other to form water? A. Group A B. Group B C. Group C D. Group D
Two free amino acids join to make one dipeptide, releasing a water molecule. How is this reaction classified? A. Hydrolysis of a peptide bond B. Reduction of a nucleotide C. Condensation forming a peptide bond D. Replication of a polypeptide
Which process produces the molecule shown from its monomers? A. Hydrolysis joins two nucleotides B. Condensation joins three amino acids C. Condensation joins two fatty acids D. Hydrolysis joins three amino acids
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