Which of the following statements is FALSE regarding a rightward shift in the hemoglobin-oxygen dissociation curve?
A) Affinity for oxygen is decreased.
B) Hemoglobin unloading of oxygen is increased.
C) It can be caused by a decrease in 2,3-BPG.
D) Oxygen loading onto hemoglobin is decreased.
E) A rightward shift usually occurs in active tissue.
Answer: C) It can be caused by a decrease in 2,3-BPG.
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Which of the following procedures would identify the enzyme that catalyzes the carboxylation of ribulose-1,5-bisphosphate?
A) irradiating a leaf extract with red light B) introducing radiolabeled carbon dioxide into a plant extract and determining which molecules become radiolabeled C) purifying a variety of proteins from plant extracts and testing each protein individually to see if it can carboxylate ribulose-1,5-bisphosphate D) differential sedimentation of a protein extract
The ____ meristems are the source of new cells that allow plants to grow in diameter
Fill in the blank with the appropriate word.
Which of these affects allele frequencies the least?
A) Natural selection B) Mutation C) Migration D) Genetic drift
The M protein of Streptococcus pyogenes
A) Protects against phagocytosis and enhances adherence. B) Is also called streptokinase. C) Is the basis for the organism belonging to Lancefield Group A. D) Protects against lysozyme damage. E) Gives rise to a zone of beta hemolysis on blood agar.