Four of the five answers listed below are generalizations of the cell theory. Select the exception

a. Cells are the structural and functional components of living things.
b. Cells arise from preexisting cells.
c. All organisms are composed of cells.
d. Cells are the basic living unit or organization of living things.
e. All cells have a nucleus.


e

Biology & Microbiology

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If a scientist recorded the size, birth rate, and age structure of an owl population over the last 20 years, he is most likely a(n):

A. demographist. B. embryologist. C. botanist. D. mathematician. E. evolutionary biologist.

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The structure enabling depolarization to travel deep into the muscle fiber is the ______.  

A.  sarcomere B.  motor unit C.  T tubule D.  sarcoplasmic reticulum

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In Drosophila and other animals, Hox genes encode transcription factors that control development; but in Arabidopsis, a different family of transcription factors is produced with a different set of conserved amino acids

These are encoded by what group of genes?

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Trees are among the largest and oldest living things on Earth. Like all life on Earth, the majority of a tree's biomass is carbon based. What is the source of this carbon?

A) Crushed rock and water B) Fertilizers C) The organic layer of the soil D) Air E) Water

Biology & Microbiology