Who described the cells that he saw under the
microscope as “animalcules”?
a. Robert Hooke
b. Robert Brown
c. Theodor Schwann
d. Rudolf Virchow
e. Anton van Leeuwenhoek
Answer: e
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In their studies of learning in Aplysia, the primary behavioral focus of Eric Kandel and his colleagues was on
A. feeding. B. the gill-withdrawal reflex. C. aggression. D. sexual behavior. E. locomotion.
The final product of glycolysis is ____
a. glucose b. fructose c. glyceraldehyde-3-phosphate d. pyruvate e. carbon dioxide
An autosome is
a. a chromosome that is part of a pair that is the same in both males and females. b. a structure for transport of genetic material to the cytoplasm. c. a chromosome with a group of genes involved in autoimmune disorders. d. a region of the DNA that is self-replicating. e. a cellular body involved in autoimmune disorders.
Salt is often used to melt ice on roads during the winter because it lowers the freezing/melting point of water. When salt dissolves in water, individual Na+ and Cl- ions break away from the salt lattice and become surrounded by water molecules. Why would this cause ice to melt?
A. Hydrogen bonds are formed, and the salt ions bond with O. As a result, it is more difficult for water molecules to bond and form ice. B. Hydrogen bonds are broken, and the salt ions interfere with interactions between H and O. As a result, it is more difficult for water molecules to bond and form ice. C. Hydrogen bonds are broken, and the salt ions bond with O and H respectively. As a result, it is more difficult for water molecules to bond and form ice.