Materials

■ safety goggles

■ heat-protective gloves

■ 125 mL Erlenmeyer flasks, 2

■ ring stand with clamp

■ amino acid mixture (supplied by your teacher)

■ glass stirring rod

■ 1% sodium chloride (NaCl) solution

■ 50 mL graduated cylinder

■ microscope slide

■ compound light microscope

■ 1% sodium hydroxide (NaOH) solution

Background

1. Microspheres are very small, spherical vessels that are bounded by a membranelike layer of amino acids. Microspheres can be created in the laboratory under controlled conditions.

2. How do microspheres differ from living cells?

3. How do microspheres resemble living cells?

and heat-protective gloves before beginning this investigation.

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