The CAM pathway ____.
A. involves only the Calvin–Benson cycle
B. involves only the C4 cycle
C. is used by plants in humid regions
D. is also known as photorespiration
E. needs day and night for completion
Answer: E
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Identify the principal role of cellular respiration.
A. To convert the chemical energy of sugars into heat to maintain an elevated body temperature B. To convert kinetic energy into the chemical energy of sugars C. To convert solar energy into the chemical energy of sugars D. To convert the chemical energy of sugars into the chemical energy that fuels life's processes
Chronic myelogenous leukemia (CML) results from a translocation between human chromosomes 9 and 22. The resulting chromosome 22 is significantly shorter than usual, and it is known as a Philadelphia (Ph') chromosome
The junction at the site of the translocation causes overexpression of a receptor tyrosine kinase. A new drug (Gleevec or imatinib) has been found to inhibit the disease if the patient is treated early. Which of the following would be a reasonably efficient technique for confirming the diagnosis of CML? A) searching for the number of telomeric sequences on chromosome 22 B) looking for a Ph' chromosome in a peripheral blood smear C) enzyme assay for receptor tyrosine kinase activity D) fluorescent labeling to determine the chromosomal location of all chromosome 22 fragments E) identification of the disease phenotype in review of the patient's records
Which is an example of active immunity?
A. antibodies produced from a vaccine, or a person receiving an injection of antibodies B. a fetus acquiring antibodies through the placenta, or a person receiving an injection of antibodies C. a person receiving an injection of antibodies D. a fetus acquiring antibodies through the placenta E. antibodies produced from a vaccine
All female mammals produce milk to feed their young
Indicate whether the statement is true or false