All flatworms use their skin as a respiratory organ
Indicate whether the statement is true or false
TRUE
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A scientist is comparing mRNA translation in a mouse cell and a bacterial cell. He notes that translation occurs much more quickly in the bacterial cell. Why?
A. The bacterial cell contains more ribosomes than the mouse cell. B. The translation machinery in the mouse cell is very different from that in the bacterium. C. The bacterial genome contains more introns compared to that of the mouse. D. The lack of a definitive nucleus and nuclear membrane in the bacterium means that translation occurs faster. E. A mutation likely exists in the RNA polymerase of the bacterium.
Which commonly used group of chemicals suppresses testosterone secretion?
a. phthalates b. chlorine bleaches c. PCBs d. food dyes e. artificial flavors
At which temperature does an organism show its greatest rate of growth over time?
A) Minimum temperature B) Maximum temperature C) Optimal temperature D) Room temperature
Describe what happens to the two parent strands of DNA during DNA replication
What will be an ideal response?