A cuboidal shaped cell with six sides is 1 mm × 1 mm × 1 mm. What is the volume and the surface area of the cell?
A. 3 mm3 : 3 mm2
B. 1 mm3 : 3 mm2
C. 3 mm3 : 1 mm2
D. 1 mm3 : 6 mm2
Answer: D
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What are isomers?
A. Two elements that can bond with each other B. Two molecules that have the same arrangement of atoms C. Two atoms that have the same ionic properties D. Two molecules that have the same atoms arranged differently
Molecular evidence indicates that the division between humans and African apes took place
Why is Smallpox is a notable exception to the general replication scheme of DNA viruses?
a. It is a single-stranded DNA virus. b. It is a retrovirus c. It has prepackaged virally encoded enzymes and replicates in the cytoplasm d. It replicates only in the nucleus. e. None of the answers are correct
Viruses are not included in the taxonomic scheme proposed by Carl Woese because they lack
A) genetic material. B) ribosomal RNA. C) proteins. D) lipid membranes. E) cytoplasm.