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Questions in biology

[Done] What does a pulley consist of?

[Done] Why do macromolecules differ in the amount of energy they contain?

[Done] State two ways living and nonliving things differ.

[Done] Which of the following represents the correct order in which early humans appeared? A. Homo erectus, Homo habilis, Homo sapiens, Australopithecine B. Homo habilis, Australopithecine, Homo erectus, Homo sapiens C. Australopithecine, Homo habilis, Homo erectus, Homo sapiens D. Australopithecine, Homo erectus, Homo habilis, Homo sapiens

[Done] What makes up a code for each amino acid?

[Done] What are the complementary mRNA and tRNA sequences for this sequence of DNA bases: CGA?

[Done] What is the difference between interspecific and intraspecific competition?

[Done] What is the ratio of heterozygous offspring to total offspring in the Punnett square?

[Done] How does matter move through the biosphere, and how does energy move through the biosphere?

[Done] What are the four bases that make up the rungs of the DNA ladder?