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Sickle-cell anemia is caused by a mutation in the ß-globin gene. Heterozygotes for the Hbs disease allele have some protection from malaria relative to wild-type, but Hbs homozygotes rarely live to produce offspring. 50 individuals homozygous for the normal (non-disease) allele produced a total of 47 children. 50 heterozygous individuals […]

Q1. What are the two main functions of the trycarboxylic acid (TCA) pathway? B) How many GTP, NADH and FADH2 are generated from passing one pyruvate during the TCA cycle? C) In what eukaryotic organelle is TCA pathway located? D) Where is the cycle located in prokaryotes? Q2. Dialysis patients, […]

1.True or false: In a DNA molecule, the bases are covalently bonded to each other.  2.True or false: During DNA replication, the strands of parent DNA are unwound.  3.True or false: The function of messenger RNA (mRNA) is to transfer amino acids to the ribosomes during protein synthesis.  4.True or […]

1. Geometric isomers: Select one: a. Have the same molecular weight b. Have the same connectivity c. Have a different configuration about a double bond d. All of the above e. None of the above   2. Which is FALSE? Diastereomers: Select one: a. Have the same molecular weight b. […]