Discuss the theory of secondary endosymbiosis and defend the theory by providing evidence that supports it

What will be an ideal response?


Answer: Secondary endosymbiosis occurred with either a green or red algal cell (which was the result of primary endosymbiosis) that was engulfed by a nonphototrophic eukaryote. This process explains how chlorarachniophytes and euglenids obtained chloroplasts and became photosynthetic. Secondary endosymbiosis accounts for the great phylogenetic diversity among phototrophic eukaryotes. There is also morphological and sequence-based evidence that support this theory.

Biology & Microbiology

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Proteins derived from infecting viruses are taken up and digested in the cytoplasm in a structure called the

A) phagosome. B) liposome. C) proteasome. D) nucleosome.

Biology & Microbiology

__________ soils hold the most amount of water. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

In a complete chemical analysis of double-stranded DNA, which would always be true? 

A. The amount of adenine equals the amount of thymine. B. The amount of thymine equals the amount of cytosine. C. The amount of ribose equals the amount of deoxyribose. D. Nitrogenous bases pair with sugar.

Biology & Microbiology

Pest resistant cotton plants that produce Bt were produced by selective breeding

Indicate whether the statement is true or false

Biology & Microbiology