You stain a cell with a dye that reacts with an enzyme found in the lysosome. You would also expect to see this dye in the:
A. endoplasmic reticulum.
B. cytoplasm.
C. mitochondria.
D. nucleus.
Answer: A
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How long does it take for the primary immune response to kick in after the first exposure to an antigen?
a. 2 weeks b. 3 - 4 days c. 2 months d. 6 weeks e. 12 hours
What is meant by signal amplification? Provide two examples. What will be an ideal response?
In performing a Gram's staining techniques, the decolorization reagent is
A. A mixture of acetone and alcohol B. A mixture of different alcohols C. A mixture of acid and alcohol D. A mixture of acetone and ether E. none of the above
Answer the following statements true (T) or false (F)
1. Maternal effect genes are inherited via the mitochondria. 2. Epistasis often involves genes of an enzymatic pathway. 3. The actions of Xist result in an organism that is a phenotypic mosaic. 4. In biparental inheritance, paternal and maternal gametes provide chloroplasts to the zygote. 5. Genomic imprinting can result in offspring with identical genotypes that have different phenotypes.