Fluorescent dyes are able to detect viable cells in a sample
a. If they are dividing.
b. if their cell walls are not intact.
c. if the green fluorescent dye penetrates the cell.
d. if the red fluorescent dye penetrates the cell.
Answer: C
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If two parent organisms have different alleles for a gene that an experimenter wants to test, he or she
will perform a a. dihybrid cross. b. monohybrid cross. c. multiple allele cross. d. trihybrid cross. e. polyploid cross.
Describe the direction of information flow in living systems. Use appropriate, scientific terms in your description
What will be an ideal response?
Why is it difficult to develop drugs that specifically target viruses and eukaryotic pathogens?
A) Viruses and eukaryotes evolve too rapidly for drugs to be effective. B) The ethical concerns with testing these drugs are too great. C) The drugs often inflict collateral damage on our own cells. D) Security enzymes break down these foreign drugs before they can exert their effects. E) There are often duplicate metabolic pathways that pick up the slack from any disturbance caused by these drugs.
Bacteria typically use binary fission, but under special circumstances sexual reproduction is possible via horizontal gene transfer.
Answer the following statement true (T) or false (F)