Consider a mutation that occurs in the gene for the progesterone receptor so it no longer can bind progesterone. What would be the effect of such a mutation?
A. The uterine lining would be maintained
throughout the menstrual cycle.
B. The uterine lining would not increase to a
level able to support pregnancy.
C. The uterine lining would be shed
continuously.
D. The uterine lining would be shed as usual
throughout the menstrual cycle.
B
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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
Which of the following cells are alive at
maturity?
a. sieve tube members b. vessel members c. tracheids d. fibers e. sclerids
The renal pelvis is continuous with the
A. nephrons. B. ureter. C. bladder. D. urethra. E. renal cortex.
If you see a large flower that is white, fragrant, and open at night, it is likely pollinated by a ____________
A. hummingbird B. bee C. bat D. fly or beetle E. rodent