BIOCHEM C785 Readiness Test (Answered) 2022/2023

BIOCHEM C785 Readiness Test (Answered) 2022/2023 5' - ACA GCT GTC - 3' 5' - UGU CGA CAG - 3' 5' - GAC AGC UGU - 3' 5' - ACA GCU GUC - 3' 5' ATC GCA TGG TGA 3' 5' GTC GCA TAG TGA 3' 5' GTC GCG TGG TGA 3' None of the above. Only one nucleotide is removed and DNA polymerase replaces the one abnormality The error in one strand of DNA is removed as well as several nucleotides on either side of the error. The gap that was removed is filled in by DNA polymerase The entire homologous chromosome is used to repair the double stranded DNA error The affected DNA strand and its complementary strand is discarded and a new double stranded DNA is created Sex-linked dominant Autosomal Recessive Sex-linked recessive mitochondrial Lactose blocks RNA polymerase from binding the promoter sequence, facilitating transcription of the LCT gene. Lactose prevents binding of transcription factors at the transcription start site of the LCT gene. The presence of lactose causes nucleosomes to separate, exposing the LCT gene. The presence of lactose causes nucleosomes to pack together tightly, exposing the LCT gene. 256 65,536 32 64 Ionic bond Hydrogen bond Disulfide bond Hydrophobic interaction Two or more polypeptides each with their own secondary structures come together to form a single larger tertiary structure of a protein Peptide bonds between amino acids make up the secondary structure of a protein The interactions between the side chains of the amino acids make up the secondary level structure of a protein The interactions between the side chains of the amino acids make up the tertiary level structure of a protein Replacing a positively charged amino acid with a negatively charged amino acid Replacing a polar amino acid with a non polar amino acid Replacing a polar amino acid with another polar amino acid Replacing a negatively charged amino acid with a negatively charged amino acid Peptide bonds Hydrophobic interactions Disulfide bonds Ionic bonds Stabilizing the product of the reaction Increasing the temperature of the reaction Increasing the activation energy of the reaction Decreasing the activation energy of the reaction Fructose is the substrate of sucrase Glucose is a substrate of sucrase Sucrose is the substrate of sucrase Water is a product of sucrase Decrease, increase Decrease. decrease Increase, decrease Increase, increase Supplement phenylalanine in the diet. Increase activity of phenylalanine hydroxylase. Decrease activity of phenylalanine hydroxylase. Supplement tyrosine in the diet. Three; storage One; storage Four; cooperative Two; cooperative Hemoglobin and myoglobin both have the same affinity for oxygen. Hemoglobin has a higher affinity for oxygen compared to myoglobin. Myoglobin has exactly one-quarter of the affinity for oxygen because it has only one subunit. Myoglobin has a higher affinity for oxygen compared to hemoglobin. 17 During intense exercise, the blood in muscle tissue becomes more acidic. What effect does this change in pH have on the delivery of oxygen to the muscle? Oxygen delivery is increased. Oxygen delivery is decreased. Oxygen delivery remains steady regardless of pH. 18 A defect in an enzyme in the citric acid cycle causes the cycle to stop functioning. What is a possible consequence? Increased levels of ATP Decreased levels of acetyl-CoA Increased levels of NADH Decreased levels of ATP Pyruvate is converted to acetyl-CoA and enters cellular respiration. Pyruvate is converted to lactate and enters the Cori cycle.