On a cladogram, branches represent

a. common ancestors.
b. groups of organisms that share a common ancestor.
c. distinguishing characters.
d. common characters.
e. extinct species.


B

Biology & Microbiology

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Phylogenetic trees show inferred evolutionary relationships in the form of multiple branching lineages connected by nodes.  

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

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A key regulator of both glycolysis and gluconeogenesis is

A) hexokinase. B) glyceraldehyde-3-phosphate. C) alanine. D) coenzyme (CoA). E) fructose-2, 6-biophosphate.

Biology & Microbiology

Which of the following is a density-independent factor?

A) weather event B) food availability C) shelter availability D) availability of mates

Biology & Microbiology

Which nutrient cycle lacks an atmospheric reservoir?

A) Nitrogen B) Phosphorus C) Carbon D) Oxygen E) Water

Biology & Microbiology