Von Baer proposed that the most conserved stages of development among vertebrates are the:
a. earliest stages. c. earliest and latest stages.
b. latest stages. d. middle stages.
A
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The structure(s) that easily distinguishes a plant cell from an animal cell is/are
_____ chloroplasts. _____ nucleus. _____ cell wall. _____ the Golgi apparatus.
In which phase of mitosis do chromosomes arrive at opposite sides of the cell?
a. anaphase b. prophase c. metaphase d. telophase e. interphase
The capacity for some tRNAs to recognize more than one codon in mRNA is explained by a phenomenon called
a. redundancy. b. wobble. c. a reading frameshift. d. degeneracy.
All of the following are features of the scientific method EXCEPT
A) hypothesis formulation. B) observation and experimentation. C) deductive reasoning. D) supernatural causes. E) repeatable by other scientists.