Organisms classified as Euglenozoa have previously been classified as protozoans, protista, plants, and animals. Why the confusion?

A) Like protozoans, they are unicellular.
B) Like animals, many are heterotrophic.
C) Like plants, many are photosynthetic.
D) A and B only
E) A, B, and C


Ans: E) A, B, and C

Biology & Microbiology

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The current model of cancer development is that

A) cancer develops from a single cell that evolves through one to two mutations. B) cancer develops from a single cell that evolves through multiple mutations. C) cancer develops from multiple cells that evolve through multiple mutations. D) cancer develops from multiple cells that evolve through one to two mutations.

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With ____, individual cells can be coaxed to divide and form embryos in a laboratory.

A. in vitro fertilization B. sexual reproduction C. tissue culture propagation D. vegetative reproduction E. grafting

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Which of the following is an amino group?

A) -OH B) -NH2 C) -COOH D) -CO

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Viruses constitute the fourth domain of life in current biological classification schemes.

Answer the following statement true (T) or false (F)

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