Which one of the following features of plant cells is NOT common with animal cells?
A. membranes
B. turgor pressure
C. plasma membrane
D. membrane channels
E. active transport
B. turgor pressure
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The plastids that give flowers and fruits their distinctive colors are
A) chloroplasts. B) elaioplasts. C) amyloplasts. D) chromoplasts. E) proteinoplasts.
Multicelled fungi live as a mesh of threadlike filaments collectively called ____
a. hyphae b. hypha c. mycelium d. yeast e. fruiting bodies
Answer the following statements true (T) or false (F)
1. Replication takes place during the G1 phase of interphase. 2. During the cell cycle there are several checkpoints that ensure that the cell cycle is proceeding correctly. 3. Cells that produce telomerase can usually divide many more times than cells that do not produce telomerase. 4. An abnormal mass of tissue is a tumor. 5. If a cancer metastasizes, its cells travel through the bloodstream or the lymphatic system and colonize other areas of the body.
A replication fork:a
is only seen in prokaryotic chromosomes. b. is only seen in bacterial cells. c. is a Y-shaped structure where both DNA strands are replicated simultaneously. d. is a site where one DNA strand serves as a template, but the other strand is not replicated. e. is created by the action of the enzyme RNA polymerase.