In the process of making pickles, cucumbers shrink in the pickle juice because they are in a(n) ____ solution.
A. hypotonic
B. isobaric
C. isotonic
D. hypertonic
Answer: D. hypertonic
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The contractile ring that works with animal cells could
not work with plant cells because __________. Fill in the blank(s) with the appropriate word(s).
Which of the following statements is false?
a. Flowers are reproductive shoots. b. Trees are gametophytes. c. Sporophyte plants can reproduce asexually. d. Cells produced by mitosis are clones. e. Gametophytes are haploid.
Which of the following techniques utilizes an electric current and the fact that DNA molecules are negatively charged?
Hybridization and gene probes Gel electrophoresis Replication Restriction endonucleases Southern blot
What is the difference between mitochondria and chloroplasts?
A. Mitochondria are oxidative metabolic bacteria derivatives, and chloroplasts are photosynthetic bacteria derivatives. B. Mitochondria have linear strands of DNA, and chloroplasts have rings of DNA. C. Mitochondria produce oxygen, and chloroplasts produce carbon dioxide. D. Mitochondria have three membranes, and chloroplasts have two membranes.