Suppose the major solutes in intact lysosomes are KCl (~0.1 M) and NaCl (~0.03 M). When isolating lysosomes, what concentration of sucrose is required in the extracting solution at room temperature (25 °C) to prevent swelling and lysis?

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#Question id: 11141

#I Life Science/ Life Sciences Group – I-V

The operation of the sodium-potassium pump moves ________.

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#Question id: 5597

#SCPH01 Biochemistry

Mammalian sperm will migrate against the direction of the flow—using CatSper calcium channels (like sea urchin sperm) to sense calcium influx and monitor the direction of the current, this process is known as:

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#Question id: 19377

#SCPH01 Biochemistry

Glyphosate is a broad spectrum herbicide that inhibits the enzyme

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#Question id: 562

#SCPH05 I Biotechnology

Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme.  This is an example of what kind of inhibition?

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#Question id: 4569

#SCPH28 | Zoology

Which of the following must exist in a population before natural selection can act upon that population?