problemsetLec1-3

problemsetLec1-3 - 1 2 3 3 What are the characteristics of...

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Bio D103: Cell Biology Bio. Department Tutoring Winter 08: Week 1 Lectures 1-3 Wed. 1-3:00 SH157 1. Microscopy (Hint: Lecture 1 Slide 10-14) a. The resolving power of a microscope (light) is equal to: Properties Electron Microscope Light Microscope Visible Wavelengths Examples of Biological Objects Observed b. What kind of information is NOT provided by microscopy: c. Can you see a membrane bilayer with 400 wavelength immunoflourescence microscopy? 2. Which of the following statements concerning cell membrane fluidity is true? a) Increasing the length of lipid hydrocarbon backbones increases fluidity b) Increasing the degree of backbone saturation increases fluidity c) Increasing the length of lipid hydrocarbon backbones decreases fluidity d) Increasing the number of double bonds in lipid hydrocarbon chain decreases fluidity e) None of the above statements are true f) Both C and D are true Factors that affect membrane fluidity: 1. 2. 3. Requirements for a biological membrane:
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Unformatted text preview: 1. 2. 3. 3. What are the characteristics of an AMPHIPATHIC molecule? Provide two examples of molecules with these characteristics you’ve already seen in lecture. 4. Selective transport across the lipid membrane requires _________ ____________ . A. List all of the SIMILARITIES between uniport and cotransport transport proteins that you can find: B. List two DIFFERENCES between uniport and cotransport transport proteins a. Which of the following statements is true regarding the speed of transport across a membrane? a. Ion channels > Transporters > ATP-powered pumps b. Transporters > ATP-powered pumps > Ion channels c. ATP-powered pumps> Ion channels > Transporters d. Ion channels > ATP-powered pumps > Transporters e. Transporters > Ion channels > ATP-powered pumps 5. Do you know your AMINO ACIDS: What three types of amino acids (groups) are found within the 20 common Amino Acids? (i.e. the ones you should remember!) a. b. 2...
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problemsetLec1-3 - 1 2 3 3 What are the characteristics of...

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