Chromatin describes
a. only DNA.
b. DNA and RNA.
c. RNA only.
d. DNA and associated proteins.
e. proteins only in the nucleus.
D
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Are plant and animal cells generally the same size?
a. Yes b. No, plant cells are generally larger. c. No, animal cells are generally larger.
Microtubules are polar, having a plus-end and a minus-end. Which end is anchored at the centrosome?
What will be an ideal response?
Once researchers identified DNA as the unit of inheritance, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. What is the mechanism of information transfer in eukarotes?
A) DNA from a single gene is replicated and transferred to the cytoplasm, where it serves as a template for protein synthesis. B) Messenger RNA is transcribed from a single gene and transfers information from the DNA in the nucleus to the cytoplasm, where protein synthesis takes place. C) Proteins transfer information from the nucleus to the ribosome, where protein synthesis takes place. D) Transfer RNA takes information from DNA directly to a ribosome, where protein synthesis takes place.
A dish of cells is treated with centrinone, a centriole inhibitor. These cells would no longer be able to ________.
A. make ATP B. divide C. synthesize proteins D. conduct photosynthesis E. produce lysosomes