Incomplete dominance is the expression of a phenotype that is intermediate to those of the parents
a. True
b. False
Indicate whether the statement is true or false
True
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Plants that are called C4 plants are better able to utilize ________ than C3 plants.
A. oxygen B. minerals C. water D. carbon dioxide E. chlorophyll
The endocrine system functions in:
a. conduction b. contraction c. hormonal control of body functioning d. protection against disease e. cell production
Inhibitors of enzymes can be either reversible or irreversible. In addition, most reversible inhibitors are either competitive or noncompetitive
Based on what you know about enzyme inhibition, classify the following examples as irreversible, competitive, or noncompetitive enzyme inhibition. A) competitive B) noncompetitive C) irreversible 1) Diisopropyl fluorophosphate binds to acetylcholinesterase and permanently inactivates the enzyme. Paralysis results. 2) A drug binds to the active site of an enzyme but disassociates and leaves the enzyme active. 3) A toxin binds to the surface of an enzyme. The enzyme then binds the substrate, but no product is produced. The toxin may disassociate and the enzyme will become active again. 4) Vitamin K is a coenzyme involved in blood clotting. An anticoagulant drug binds at the site of vitamin K bonding, blocking vitamin K binding and preventing clotting. Clotting resumes after the patient stops taking the drug. 5) Aspirin binds to prostaglandin synthetase and permanently stops its ability to produce prostaglandin.
Which of the following is an incorrect statement?
A) A large leaf maximizes light interception. B) A deeply lobed leaf minimizes heat exchange with the atmosphere. C) A thick leaf reduces loss of water via transpiration. D) A leaf with a high SLA is generally thin and flexible.