sq4-8 - Lab 4 1.500x 2. smaller, but dimmer 3. Cheek cells...

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Lab 4 1.500x 2. smaller, but dimmer 3. Cheek cells are colorless, but photosynthetic cells have pigment 4. The entire thickness of the tissue is not in focus at the same time due to the narrow depth of field 5. High power gives greater detail but less light, and one may not be able to see entire specimen 6. Size, motility, presence/absence of a nucleus, cell wall, chloroplasts, locomotor appendages 7. Viruses have either DNA or rna (not both); they are not self-replicating, and cannot be seen using a light microscope 8. HIV infects helper t cells. As HIV replicates and the infection progresses the CD4+ cell count drops. When CD4+cell count is below 200 the person is defines as having AIDS. LAB 5 1. Viruses do not grow on artificial media; they require living host cells to replicate 2. No, most are non-pathogenic 3. When it invades an abnormal site in the body, the host’s immune system becomes compromised; when normal flora balance is upset, such as during antibiotic therapy. 4. They may be immunized against he disease, the type of contact may not allow the
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This note was uploaded on 09/07/2011 for the course BIO 101 taught by Professor Staff during the Spring '11 term at S.F. State.

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sq4-8 - Lab 4 1.500x 2. smaller, but dimmer 3. Cheek cells...

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