Why was ATP a primary molecule in connecting energy-releasing and energy-requiring reactions in early cells?
a. because it was the only molecule available to transfer energy
b. because of its versatility and efficiency in transferring energy
c. because of its structure
d. because of its attraction to energy
Ans: b. because of its versatility and efficiency in transferring energy
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Which of the following statements is NOT true of cephalopods?
A. Some are very large and can weigh as much as two tons. B. Some are very intelligent and are good learners. C. Some have shells and some do not. D. They are predatory. E. They have an open circulatory system.
Which is NOT a function of the liver?
A. Detoxification of certain molecules B. Removal of glucose and storage as glycogen C. Destruction of fats D. Removal of foreign organisms
Which of the following technologies can compare the expression of thousands of genes at once?
A.) DNA fingerprinting B.) gel electrophoresis C.) gene sequencing D.) DNA microarrays
Which of the following may have cell walls containing teichoic acids?
A) Gram-negative bacteria only B) Gram-positive bacteria only C) archaea D) both Gram-positive and Gram-negative bacteria E) all prokaryotes