What structure of angiosperms attracts animals as a way to disperse seeds?
a. Sepals
b. Anther
c. Flower
d. Fruit
Answer: d. Fruit
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Pasteurization results in the sterilization of food products
Indicate whether this statement is true or false.
The rapid expansion of angiosperms late in the
Mesozoic era appears to be related to their coevolution with a. dinosaurs. b. gymnosperms. c. insects. d. mammals. e. birds.
In the nitric oxide signaling pathway, nitric oxide activates an enzyme that can convert many molecules of GTP into molecules of cGMP. cGMP is a small molecule that can diffuse through the cytoplasm and bind to an enzyme called protein kinase G (PKG). Binding of cGMP to PKG leads to a change in the confirmation of PKG that leads to its activation. What type of signaling molecule is cGMP?
A. adapter protein B. enzyme C. second messenger D. scaffold
On the posterior surface of the superior (1st part) of the duodenum we can find all the following structures except:
A. Inferior Vena Cava B. Portal Vein C. Gastroduodenal artery D. Aorta E. Bile duct