The bright red rash and fever of scarlet fever is due to ________.

A. exfoliative toxin
B. hemolysins
C. erythrogenic toxin
D. enterotoxins
E. toxic shock syndrome toxin


Answer: C

Biology & Microbiology

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In a chemical reaction, the standard free energy change (?G°') is calculated to be 3.67 cal/mol. What can be said of the chemical reaction?

A) The reaction is at equilibrium under standard conditions. B) The reaction goes spontaneously to the right under standard conditions. C) The reaction is not spontaneous under standard conditions. D) Products predominate over reactants at equilibrium under standard conditions. E) There can be no reaction.

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Which type of cell has the fewest number of chromosomes?

a. somatic b. gametes c. archaea d. diploid

Biology & Microbiology

What separates in meiosis I to reduce the diploid number (2n) of chromosomes to the haploid number (n)?

What will be an ideal response?

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Which of these is NOT one of the large veins carrying blood to the heart?

A. superior vena cava B. inferior vena cava C. pulmonary trunk D. pulmonary vein E. coronary sinus

Biology & Microbiology