Which of the following is the probable basis for the
evolution of mitochondria and chloroplasts?
a. Cells eat each other.
b. Light is an energy source.
c. ATP can carry energy.
d. Oxygen is a by-product of photosynthesis.
e. Energy can be transformed from one form to
another.
Answer: a
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The lowest temperature needed to kill or inactivate all microbes in 10 minutes is the
A. thermal death time (TDT). B. death phase point. C. thermal death point (TDP). D. sporicidal time.
During inhalation _____
a. the thoracic cavity expands b. the diaphragm relaxes c. atmosphereic pressure declines
What is evolution?
A) a rare event B) a process that is constantly occurring at the same rate in all organisms C) a process that occurs as a result of differences in reproductive fitness D) a process that occurred only in the past
The use of recombinant DNA technology to treat genetic diseases ("gene therapy") has been held back by difficulty
A) delivering cloned genes into target cells and getting the genes to function properly. B) in obtaining the appropriate sequence information from individual people. C) cloning human genes. D) in identifying human genes that cause disease. E) cloning and identifying human genes that cause disease.