Eukaryotic cell membranes use many sterol molecules for construction, which contrasts with archaeal membranes that utilize ________.
Fill in the blank(s) with the appropriate word(s).
isoprenoids
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This figure illustrates that:
1.kelp prefers the east as opposed to the west coasts of land masses
2.kelp has a subtropical/ tropical distribution
3.kelp is confined to cold waters
4.kelp occurs in the northern hemisphere only
Which respiratory disease is caused by a bacterial infection?
A. the common cold B. asthma C. lung cancer D. tuberculosis E. cystic fibrosis
Steroid hormones produce their effects in cells by _____
A) activating key enzymes in metabolic pathways B) activating translation of certain mRNAs C) promoting the degradation of specific mRNAs D) binding to intracellular receptors and promoting transcription of specific genes
The differentiating mechanism between a flagellar response to a chemoattractant or a chemorepellent involves the ________ activity being low or high (respectively) on ________
a. autophosphorylation / CheA b. autophosphorylation / MCPs c. demethylation / CheA d. demethylation / MCPs