Which of the following statements is true?
A. The citric acid cycle begins and ends with pyruvate.
B. Cellular respiration will eventually produce three ATP molecules.
C. Aerobic respiration of glucose has five phases.
D. Aerobic respiration releases oxygen and uses carbon dioxide.
E. The end product of glycolysis is pyruvate.
Answer: E
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Which of the following statements about the protonephridia of freshwater flatworms is correct?
A. Fluid from the body enters the protonephridia without first being filtered. B. Protonephridia are surrounded by a capillary network to allow for selective reabsorption and secretion. C. The urine leaving the body of a freshwater flatworm is more concentrated than its body fluids. D. Muscular contractions drive fluid movement through the excretory tubules. E. The fluid passing through the tubules is not modified prior to excretion.
The fields of genomics and proteomics differ in that
A. genomics refers to the study of an organism's entire genome, whereas proteomics is the study of expressed proteins. B. genomics is the study of an organism's chromosomes and the resulting proteins are studied in the field of proteomics. C. the field of genomics involves the study of DNA replication and the field of proteomics refers to the study of transcription and translation. D. genomics is the study of an organism's chromosomes and proteomics is the study of transcription and translation of proteins.
When nondisjunction occurs early in embryogenesis rather than gametogenesis, what would you expect in the resulting karyotype?
A) monosomy B) trisomy C) mosaicism D) uniparental disomy E) random X-inactivation
Explain the biochemical features that are unique to archaea.
What will be an ideal response?