In what portion of a eukaryotic cell is the majority of DNA isolated?
a. nucleus
b. mitochondria
c. vesicles
d. cytoplasm
e. lysosome
ANSWER: a
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Cytokinins are plant hormones that usually affect cell:
A. elongation B. growth C. division D. wall expansion E. turgor pressure
Marine bony fishes produce a very small amount of urine whereas freshwater bony fish produce a large volume of urine. Why are they different?
What will be an ideal response?
Which of the following statements about self-assembly is false?
A) The noncovalent interactions that drive supramolecular assembly processes are similar to those that dictate the folding of individual protein molecules. B) Self-assembly only occurs in structures composed of protein. C) Self-assembly requires specific chemical conditions. D) Molecular chaperones are sometimes required for the proper folding and assembly of complex proteins. E) All of the above.
If a cell begins to divide in an uncontrolled way, it ____
a. will always form a cancerous tumor b. may form a benign tumor c. is a sign of metastasis d. is considered a malignant tumor e. signals uncontrolled cell division in other parts of the body