Scientists using evolutionary systematics to construct a phylogenetic tree would use:a

a combination of ancestral and derived characters.
b. the number of shared characters the organisms posses.
c. primarily polyphyletic groupings.
d. only derived characters.
e. only ancestral characters


A

Biology & Microbiology

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Possible evolutionary relationships, when determined solely by the study of comparative morphology, may be incorrect due to

a. morphological divergence. b. morphological convergence. c. adaptive radiation. d. extinction. e. homology.

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what is the key cell in the field of cancer immunotherapy?

What will be an ideal response?

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Imagine that you are conducting an experiment on a yeast enzyme known as sucrase. This enzyme is used by yeast cells to break down the disaccharide sucrose into the monosaccharides glucose and fructose. What type of reaction is this?

A) Metergonic B) Endergonic C) Exergonic D) Spontaneous

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As the human population size increases,

(a). ecosystems remain unaffected. (b). fewer fossil fuels are burned and carbon dioxide levels remain constant. (c). it becomes evident that preserving the biosphere has no benefit to humans. (d). fewer ecosystems are destroyed, resulting in an abundance of biodiversity. (e). biodiversity is adversely affected as humans have destructive effects on ecosystems.

Biology & Microbiology