In some plants, the direction of growth changes in
response to contact with an object. This is called
__________. Fill in the blank(s) with the appropriate word(s).
Answer: thigmotropism
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Because so few bacteria can be grown easily in culture, but all of them contain DNA, molecular techniques like PCR and SSU rRNA are used to be able to identify and quantify microorganisms as a "census" for diversity.
Answer the following statement true (T) or false (F)
Freshwater flatworms have this type of system for osmoregulation.
A. protonephridial B. metanephridial C. osmonephridial D. eunephridial E. isonephridial
The functional group shown above is ____
a. a carbonyl group b. a hydroxyl group c. a phosphate group d. an amino group e. a carboxyl group
Which of the following skin defenses and its mechanism is mismatched?
A. Lysozyme; hydrolyzes peptidoglycan in bacterial cell walls B. Keratinized surface; protein that provides waterproofing C. Antimicrobial peptides; disrupt positively charged bacterial membranes D. Sebum; lipid hydrolysis leads to toxic by-products that inhibit microbial growth