Macromolecules that are used by most organisms to store hereditary information are called:
A. proteins.
B. transfer RNA molecules.
C. ribosomal RNA molecules.
D. DNA molecules.
E. messenger RNA molecules.
D. DNA molecules.
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Mitotic cell division in unicellular eukaryotes can result in a cell that is:
A. 1n. B. 2n. C. Either 1n or 2n, depending on whether the organism predominantly exists as a haploid cell or a diploid cell.
Steroid hormomes are an example of an effector which regulates regulatory transcription factor activity
Indicate whether the statement is true or false
The transfer of antibodies in breast milk is a good example of
A. artificially acquired active immunity. B. artificially acquired passive immunity. C. naturally acquired active immunity. D. naturally acquired passive immunity.
When testing the effectiveness of a new cleaning product, which sample would be more valid? a. 222 bacteria in the Petri dish b. None of the samples are valid
c. 14 bacteria in the Petri dish d. All samples are equally valid. e. 3 bacteria in the Petri dish