What is the reproductive organ of angiosperms?
A. Flowers
B. Cones
C. Fruits
D. Seeds
Answer: A
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The urine of marine mammals is ____ when compared to ____
a. hypoosmotic; seawater
b. hypoosmotic; their body fluids c. hyperosmotic; seawater d. isoosmotic; their body fluids e. isoosmotic; seawater
Which of the following secretions is NOT found in the duodenum?
a. pancreatic fat digesting enzymes b. bile c. gastrin d. bicarbonate e. pancreatic protein digesting enzymes
A chemical reaction in which polymers are synthesized from their building blocks is called:a
hydrolysis. b. condensation. c. oxidation. d. reduction. e. dissociation
Nutritional mutants in Neurospora can be "cured" by treating the medium with substances in the defective metabolic pathway. What determines whether the mutant strain (auxotroph) is "cured" by a particular substance?
What will be an ideal response?