A particular cell type spends 4 hours in G1 phase, 2 hours in S phase, 2 hours in G2 phase, and 30 minutes in M phase. If a pulse–chase experiment were performed with radioactive thymidine on an asynchronous culture of such cells, what percentage of mitotic cells would be radiolabeled 9 hours after the pulse?a. 0 percentb. 50 percentc. 75 percentd. 100 percent

Lignin and cellulose provide rigidity to the cell walls of plants. But in most fungi, chitin performs this role. Why is it logical that most fungi don't have lignin or cellulose in their cell walls?

Fungi feed by .a. producing their own food with the help of sunlight;b. chasing and capturing other living organisms;c. growing on their food source and secreting chemicals to break it down;d. filtering bacteria out of their surroundings;e. producing spores

Under a microscope, a piece of a mushroom would look most likea. jelly.b. a tangle of string.c. grains of sugar or salt.d. foam.

Lawns are sometimes fertilized with nitrate that can be washed into neighboring woodlots by rain. If the trees in that woodlot are associated with EMF, what effect might the excess nitrate have on the fungi and/or trees?a. Fungal growth may be stimulated, causing the trees to transport more nitrogen to the fungi.b. The fungi may secrete more peptidases to break down the nitrate.c. The trees may take up the nitrate directly into their roots and rely less on the fungi.d. The excess nitrate may stimulate the fungi to transport more sugar to the trees.

Which of the following groups is made up exclusively of fungi that form symbioses with plant roots?a. ascomycetesb. basidiomycetesc. glomeromycetesd. zygomycetes

When a fruit fly embryo first begins to develop, a large cell is generated that contains over 8000 genetically identical nuclei. What is most likely responsible for this result?

Many mushrooms are extremely colorful. One hypothesis is that the colors serve as a warning to prevent animals from eating mushrooms, much like the bright yellow and black stripes on wasps help to deter potential predators. Design an experiment to test this hypothesis.

Many mushrooms are extremely colorful. One hypothesis is that the colors serve as a warning to prevent animals from eating mushrooms, much like the bright yellow and black stripes on wasps help to deter potential predators. Design an experiment to test this hypothesis.