Which of the following are true statements about gibberellins? Check all that apply.  

_____  They can restore normal growth and development in certain dwarf mutants.
_____  They inhibit amylase and other hydrolytic enzymes.
_____  They are produced in the apical regions of shoots and roots.
_____  They promote internode elongation.
_____  They hasten seed germination.


__X__  They can restore normal growth and development in certain dwarf mutants.
_____  They inhibit amylase and other hydrolytic enzymes.
__X__  They are produced in the apical regions of shoots and roots.
__X__  They promote internode elongation.
__X__  They hasten seed germination.

Biology & Microbiology

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As a general principle of gene regulation through operons, regulatory genes encode

A) trans-acting proteins that interact with cis-acting DNA elements. B) cis-acting proteins that interact with cis-acting DNA elements. C) cis-acting proteins that interact with trans-acting DNA elements. D) trans-acting proteins that interact with trans-acting DNA elements.

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Which of the following do all fungi have in common?

a) absorption of nutrients b) symbioses with algae c) meiosis in basidia d) sexual life cycle e) coenocytic hyphae

Biology & Microbiology

Complex carbohydrates such as starch need to be first broken down to ____________ before they are quickly taken up by cells.

A. oligosaccharides B. amino acids C. monosaccharides D. pyruvate E. acetyl-CoA

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Histological samples prepared with the ________ stain may reveal the presence of abnormal cells

A) acid-fast B) Gram C) simple safranin D) methylene blue E) hematoxylin and eosin (HE)

Biology & Microbiology