Explain the purpose of meiosis
What will be an ideal response?
ANSWER: Meiosis is a process that reduces the chromosomal content of a cell to a haploid state so that a
daughter cell can fuse with another haploid cell from a different member of the same species. The union of the two haploid cells produces a diploid zygote with a unique genetic make-up,
containing genetic elements from both parents. This increases genetic variation in the species.
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A series of enzymatic steps that fixes carbon dioxide into carbohydrate is called the ________.
A. Pentose phosphate pathway B. Entner-Doudoroff pathway C. Calvin-Benson cycle D. Embden-Meyerhoff pathway
Indicate the phylogenies that show the same relationship as the phylogeny above (Select all that apply).
_____ 
_____ 
_____ 
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A substance with a pH of 6 is called
a) an acid b) a base c) both an acid and a base d) neither and acid nor a base
Isotopes are atoms of the same element that differ in their
A. atomic number. B. electron number. C. proton number. D. neutron number. E. chemical properties.