Nearly all of life’s chemistry occurs near a pH of ____
a. 1
b. 3
c. 5
d. 7
e. 9
ANSWER: d
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The largest protistans would be included in which group?
a. brown algae b. golden algae c. red algae d. green algae e. blue-green algae
A woman's doctor tells her to gargle with salt water. She stirs a tablespoon of salt into a cup of warm water, and watches it dissolve. Why does the salt dissolve in water?
a. The positive hydrogen atoms in water molecules are attracted to chlorine ions, and the negative oxygen atoms in water molecules are attracted to sodium ions. b. The negative oxygen atoms in water molecules are attracted to sodium ions. c. The positive hydrogen atoms in water molecules are attracted to chlorine ions. d. The positive hydrogen atoms in water molecules are attracted to sodium ions. e. The negative oxygen atoms in water molecules are attracted to chlorine ions.
Ivan Pavlov is most closely associated with
A) breeding experiments with pigeons. B) operant conditioning (trial-and-error learning). C) insight learning. D) classical conditioning with dogs. E) imprinting experiments with ducks.
Professional antigen-presenting cells (APCs) include B cells, macrophages, and (dendritic/plasma/T) cells
What will be an ideal response?