Which of the following are found in the nucleus?
a. plastids
b. vacuoles
c. vesicles
d. nucleoli
e. microbodies
Answer: d
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One day during the summer you and some friends make ice cream using an electric ice cream maker. To get the ice cream to form, a mixture of salt and ice is packed around the ice cream maker. A few days later you notice a yellow circle of dead grass where the ice cream maker had been placed. You hypothesize that some of the salt and ice mixture spilled onto the grass and ___
A. froze the grass B. was isosmotic to the grass cells causing the yellow circle of dead grass C. was hyperosmotic to the grass cells causing the yellow circle of dead grass D. was hypoosmotic to the grass cells causing the yellow circle of dead grass
The cellular fragments in the blood that function in blood clotting are
(a) erythrocytes. (b) leukocytes. (c) platelets. (d) none of the above.
The ten phyla of living land plants include:
A. (1) liverworts, (2) hornworts, (3) mosses, (4) lycophytes, (5) pteridophytes, (6) cycads, (7) ginkgos, (8) conifers, (9) gnetophytes, and (10) angiosperms B. (1) liverworts, (2) hornworts, (3) mosses, (4) lycophytes, (5) pteridophytes, (6) cycads, (7) ginkgos, (8) conifers, (9) gnetophytes, and (10) flowering plants C. (1) Hepatophyta, (2) Anthocerophyta, (3) Bryophyta, (4) Lycopodiophyta, (5) Pteridophyta, (6) Cycadophyta, (7) Ginkgophyta, (8) Coniferophyta, (9) Gnetophyta, and (10) Anthophtya D. (1) liverworts, (2) hornworts, (3) mosses, (4) lycophytes, (5) ferns, horsetails, and whisk-ferns, (6) cycads, (7) ginkgos, (8) conifers, (9) gnetophytes, and (10) flowering plants E. all the other choices provided are correct.
Using polyethylene glycol (PEG), early G1 phase cells were fused with S phase cells. Of the following events, which would you expect to be induced in the G1 cells as a result of the fusion?
A) cytokinesis B) condensation of chromosomes C) DNA replication D) mitosis E) spindle fiber formation