The process of aerobic metabolism, carbon-containing molecules are broken down. What is the energy from the electrons used for?
a. to generate a hydrogen ion gradient
b. to heat the organism in a cold environment
c. to alter enzyme structure
d. to directly supply the energy needs of an organism
Answer: a. to generate a hydrogen ion gradient
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The first phylum with three germ layers is
a. Cnidaria. b. Platyhelminthes. c. Annelida. d. Arthropoda. e. Nematoda.
A dihybrid has the genotype AaBb. The diagram depicts the chromosome composition of different cells from the animal. Which of the cells could represent a mature gamete?
A) Cell G B) Cell H C) Cell K D) Cell M E) Cell P
Which of the following best describes advantages conferred by compound leaves versus simple leaves?
a. There's a greater chance of capturing photons in intermittently shady areas. b. There is less chance of damage in high-wind areas. c. There's a reduced chance of herbivory. d. There is less surface area for water loss. e. There's a greater chance of capturing photons in intermittently shady areas and less chance of damage in high-wind areas.
All of the following are common to both the Gram stain and the acid-fast stain EXCEPT
A. primary stain. B. counterstain. C. a decolorizing agent. D. a chemical mordant. E. a decolorizing agent and a counterstain.