One of the limiting factors in engineering plants for nitrogen fixation is to prevent the binding of ________ to the enzyme nitrogenase and the subsequent inhibition of the enzyme.
A. calcium
B. bacteria
C. oxygen
D. phosphorus
E. cell membranes
C. oxygen
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Describe the basic two-component regulatory system, and compare the function of each component
What will be an ideal response?
In order for a muscle to contract, calcium ions released from the sarcoplasmic reticulum must bind to
A. myosin. B. ATP. C. tropomyosin. D. troponin. E. actin.
Sugar is conducted in solution through specialized cells known as:
a. fibers. b. companion cells. c. sieve tube elements. d. tracheids. e. vessels.
All of the following statements regarding fetal nutrition and size are true, EXCEPT
A. Fetuses with Intrauterine Growth Restriction (IUGR) are insulin-resistant, saving glucose for the brain since the brain does not have insulin-dependent glucose transporters. B. Obesogenic environments include those where the nutrition may be described as the Typical Western Diet, and they promote adult Type II Diabetes later in life for IUGR babies. C. Macrosomia is associated with gestational diabetes and premature birth. D. Poor uteroplacental and fetoplacental blood flow is associated with IUGR. E. Twinning has no effect on individual fetal nutrition delivery.