New cork cambium forms within the secondary phloem
A. true
B. false
A
Biology & Microbiology
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The plasma membrane is a thin sheet of lipid embedded with
A. proteins. B. carbohydrates. C. polymers. D. nucleotides. E. sodium and potassium ions.
Biology & Microbiology
Ribosomes are very old structures, found in all organisms (except viruses), from bacteria to humans. As a result, molecular taxonomists are looking at relationships based upon which rRNA sequence(s)?
A) 16S B) 18S C) 30S D) both choices A and B E) all of the above
Biology & Microbiology
What percentage of fruit fly genes have
homologous genes that can be found in humans?
a. 10 b. 20 c. 30 d. 40 e. 50
Biology & Microbiology
Actin bundles give shape and support to ________ found in intestinal mucosal cells
A) cilia B) flagella C) microvilli D) nuclei E) lamellipodia
Biology & Microbiology