Which term best describes a trait that is shared by all members of a clade and only by members of that clade?

a) molecular clocks
b) dichotomous structures
c) derived characters
d) nodes


Ans: c) derived characters

Biology & Microbiology

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What cell type secretes antibodies?

A) natural killer cells B) helper T cells C) macrophages D) mast cells E) plasma cells

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A primary transcript in the nucleus of a eukaryotic cell is _____ the functional mRNA, while a primary transcript in a prokaryotic cell is _____ the functional mRNA

A) the same size as; smaller than B) larger than; the same size as C) larger than; smaller than D) the same size as; larger than

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The Calvin cycle makes direct use of ________ to make ________

A) light energy and CO2... sugar B) CO2, ATP, and NADPH... sugar and O2 C) light energy, CO2, and water... sugar and O2 D) CO2, ATP, and NADPH... sugar

Biology & Microbiology