What is the major function of the prokaryotic cell wall?
a) to determine the shape of the cell
b) osmotic protection
c) adherence onto pathogens
d) protection from phagocytosis
Answer: b) osmotic protection
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Molecular biologists rely on many, often sophisticated, techniques to pursue their discipline. Ultracentrifugation, electron microscopy, X-ray diffraction, electrophoresis, and computer interfacing are fundamental tools
Model organisms provide the raw materials for study. List three organisms (or organismic groups) often used by recombinant DNA technologists and describe a major advantage of each group.
The pH of the body is maintained at
A. 7.00-8.00. B. 6.00-7.00. C. 6.25-7.45. D. 7.35-7.45. E. 7.65-7.85.
Compare and contrast mitosis and meiosis using words, diagrams or both
What will be an ideal response?
If a cell contains 20 chromosomes, how many chromatids will be present during prophase?
A) 30 B) 20 C) 40 D) 5