Classification.The terms below relate to the movement of materials and membranes. Answer the following questions by selecting the correct term.
A. Spontaneous movement of molecules
B. Fluid with a high solute concentration relative to another fluid
C. Movement of molecules would be out of this fluid
D. Movement of molecules would be into this fluid
E. Fluid with a low solute concentration relative to another fluid
F. Movement of molecules across a membrane would be equal
G. Fluid with the same solute concentration relative to another fluid
H. Movement of water molecules across a membrane
I. Pressure that prevents the movement of water into a cell despite a hypotonic internal environment
J. Pressure from a fluid against a boundary that contains it
A. Diffusion
B. Hypertonic
C. Hypertonic
D. Hypotonic
E. Hypotonic
F. Isotonic
G. Isotonic
H. Osmosis
I. Osmotic pressure
J. Turgor
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Very low concentrations of detergent make membranes leaky to small molecules and ions without damaging proteins. In isolated mitochondria exposed to detergent, the molecules of the electron transport chain and of ATP synthase remain intact
Do you expect ATP synthesis to continue in the presence of low concentrations of detergent? A. Yes, because all enzymes and electron carriers are functional. B. No, because with a leaky membrane, H+ gradient cannot be maintained. C. No, because leaky membranes do not allow NADH and FADH2 to donate their electrons to the electron transport chain. D. because leaky membranes inhibit glycolysis.
Bicarbonate that neutralizes stomach acid is produced by the
A. duodenum. B. small intestine. C. pancreas. D. large intestine. E. liver.
Based on the endosymbiosis theory, which of the following used to be a free-living prokaryote?
a. mitochondria b. rough endoplasmic reticulum c. peroxisomes d. ribosomes
Which step in making beer involves soaking malt grain, grinding it, and heating with sugar and starch?
A. Wort boiled with hops B. Malting C. Preparing a mash D. Fermentation E. Aging