A classmate tells you that his mother had her gallbladder removed, and he says she wants to cut down on fat in her diet. He comments that he's not sure why because lipase is the enzyme that breaks down fats, and bile stored in the gallbladder isn't an
enzyme. Although his last statement is factually true, how would you help your classmate understand this connection?
What will be an ideal response?
Bile greatly increases the efficiency of lipase by emulsifying fats, and fat digestion would therefore be compromised by a lack of bile.
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Soil particles are classified based on their size
Indicate whether the statement is true or false.
Ubiquitin ____.
A. targets proteins for degradation and post-translational processing. B. targets proteins for degradation. C. targets proteins for post-translational processing. D. is attached to improperly folded proteins. E. is attached to improperly folded proteins and targets them for degradation.
Which hormone is released by the posterior pituitary gland?
a. antidiuretic hormone (ADH) b. thyroid stimulating hormone (TSH) c. follicle stimulating hormone (FSH) d. melatonin e. adrenocorticotropic hormone (ACTH)
When sodium ions diffuse into the axon’s
cytoplasm, the cytoplasm becomes
a. more positively charged. b. more negatively charged. c. neutrally charged. d. impermeable to more sodium ions. e. more than one of these