Of the following, which group exhibits a diverse morphology, forming unicells, filaments, and sheets?

a. green algae
b. brown algae
c. euglenoids
d. dinoflagellates
e. diatoms


A

Biology & Microbiology

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With regard to cancer cells in the process of metastasis to secondary sites, which of the following statements is not correct?

A) If they enter via lymphatics, cancer cells may multiply in regional lymph nodes. B) Many cells from the primary mass may enter circulation. C) The population of cancer cells in the bloodstream is monoclonal. D) Very few cancer cells survive the bloodstream. E) The population of cancer cells is heterogeneous.

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The smooth endoplasmic reticulum has ribosomes attached to it

Indicate whether the statement is true or false

Biology & Microbiology

A polyploid organism contains ____ set(s) of chromosomes. 

A. no B. one C. two D. multiple

Biology & Microbiology

In the regulation of gene expression, anything that increases the binding of RNA polymerase to a gene's promoter region could be called:

a. positive translational control b. negative translational control c. a situation due to an inactive repressor d. positive transcriptional control e. negative transcriptionalcontrol

Biology & Microbiology