Announcements nce added to Course Materials Posted on: Wednesday, September 19.

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Announcements nce added to Course Materials Posted on: Wednesday, September 19. 2018 10:10 Check Couc that I will use to grade these lab reports, and Report Guida Materials section to find an outline for writing the Lab 3 rubric graph paper. I'd like long report, a to receive these reports by October 8th. Quiz Topics for Sept. 24th Lab Quiz in N654 Posted on: Tuesday, September 18, 2018 11:06:00 PM EDT You will be asked to answer three of the following problems: 1. Which two organelles are able to detoxify chemicals? 2. How do microvilli affect a cell's ratio of surface area to cm do mcesoili a volume? 3. How does phenolphthalein react to pH? i fu 4. How does a solute's molecular weight affect its rate of diffusion? 5. Draw a picture of a diploid cell at metaphase if n-3 (n is number of chromosomes inherited from each parent). 6. Draw a picture of a diploid cell at anaphase if n-3 (n is number of chromosomes inherited from each parent). ALL Bio 425 students MUST purchase Lah Mne

Explanation / Answer

1. Peroxisomes and smooth endoplasmic reticulum are the two organelles which are able to detoxify chemicals.

2. microvilli is having an elaborately convoluted surface which can increase the high surface area to volume ratio.

3. Phenolphthalein is an indicator and a weak acid which reacts only with strong bases

Phenolphthalein is colourless. and it doesn't react with acid (pH 1 to 7) but it reacts with strong bases, like NaOH, KOH ( basic pH - 10) etc, and turns into pink.

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