The sugar in RNA nucleotides is ____
a. dextrose
b. sucrose
c. glucose
d. ribose
e. deoxyribose
d
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The mouse is a particularly useful model for studying human disease because _____
a. mice and humans are 100% genetically identical b. all mice are in essence, clones c. mice do not feel pain and discomfort d. mice and humans are the only species whose genomes have been sequenced e. approximately 90% of human disease-associated genes are present in the mouse genome
. It’s Friday afternoon, which means it’s time to clean out the shared fridge in the break room. Besides the usual assortment of half-eaten sandwiches and stale diet cola, you discover a moldy orange in a drawer that looks like it’s been there forever. Next to it you find a scribbled note that turns out to be a limerick: My lunch last week was ricotta With a couple of oranges and a soda But yesterday my sweet oranges Sprouted fuzzy black sporanges And now all I’ve got is Deuteromycota Chuckling to yourself, you can’t help but notice that the poet is using outdated and inaccurate terminology. Assuming that the orange is covered in bread mold (Rhizopus stolonifer), to which phylum does it belong?
a. Chytridiomycota b. Basidiomycota c. Zygomycota d. Ascomycota
Darwin's mechanism of evolution was
1.acquired traits. 2.artificial selection. 3.horizontal transfer. 4.natural selection. 5.mutations in the DNA.
Which of the following scientists provided evidence in favor of the concept of spontaneous generation?
A) Pasteur B) Needham C) Redi D) Buchner E) Spallanzani