Single-celled eukaryotic organisms that lack chlorophyll are called
A. Algae.
B. Protozoa.
C. Chlorophyta.
D. Salmonella.
B
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Vertebrates have four Hox gene clusters that control the anterior-posterior axis. Indicate whether the statement is true or false
Which of the following is the outermost feature on the surface of a plant cell?
a. cholesterol b. cell wall c. sugar molecules d. glycoproteins e. lipid bilayer
Africa, Asia, South America, and Antarctica share some patterns of primitive (fossil) plants and early reptiles, but do not have similar mammal populations. This, therefore,
A. casts serious doubts upon the theory of continental drift and fused land masses. B. is an unsolved puzzle probably due to the random nature of biological evolution. C. suggests that a pattern of land bridges existed at different times in geological history. D. suggests that the earlier plants and reptiles evolved while continents were joined, but mammals radiated into diverse groups after separation. E. suggests that the mammals evolved earlier while continents were joined, but plants and reptiles radiated into diverse groups after separation
Where is the genetic information of the cell stored?
a. lysosomes b. smooth endoplasmic reticulum (ER) c. nucleus d. Golgi apparatus e. rough endoplasmic reticulum (ER)