Muscle cells are multinucleate meaning that multiple nuclei are present in the cytoplasm of a large cell. Predict what is different about the cell cycle in a muscle cell
A. The G1 and G2 phases are extended.
B. Cytokinesis does not occur.
C. S phase happens twice.
D. M phase is inhibited.
B
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Incubation conditions for anaerobic cultures include:
a. 30°C to 35°C. b. incubation for 48 hours before exposing the culture to air. c. incubation for at least 3 days before dis-carding. d. aerobic incubation of the broth medium with the cap loose.
Which of the following is NOT found in white
muscle fibers?
a. stored ATP b. creatine phosphate c. myoglobin d. hemoglobin e. more than one of these
Which of the following statements about embryonic development is NOT true?
A. A zygote undergoes cleavage, which increases the cell number, but not the volume of the egg cytoplasm. B. A primitive gut is also referred to as an archenteron. C. A blastopore is the opening into the primitive gut formed by gastrulation. D. A blastocoel is the fluid-filled cavity of a blastula. E. The primitive streak occurs in the morula stage of the embryonic development.
Which cells make up the bulk of the soft primary growth of roots, stems, leaves, flowers, and fruits?
a. parenchyma cells b. sclerenchyma cells c. collenchyma cells d. vessel members cells