Cercozoans are a widely diverse group of amoeboid flagellated protists that have been grouped together based on genetic similarities.
Answer the following statement true (T) or false (F)
True
Refer to Section 24.6 for a discussion of Cercozoans.
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Which one of the following types of RNAs carries information for making a single type of protein?
A. transfer RNA B. messenger RNA C. small nuclear RNA D. ribosomal RNA E. small interfering RNA
In the human menstrual cycle, which hormone is secreted by the hypothalamus?
1.estrogen
2.gonadotropin-releasing hormone
3.follicle-stimulating hormone
4.luteinizing hormone
Human infants of low or very high birth weights are
less likely to survive than those of average weight. This outcome is an example of __________ selection. a. directional b. stabilizing c. balanced polymorphism d. disruptive e. gender
Modify the following statement to make it correct: Ribozymes are ribonucleosomes used by bacteria and eukaryotic cells to modify DNA.
A. Ribozymes are ribonucleases used by bacteria and eukaryotic cells to modify RNA. B. Ribozymes are ribonucleosomes used only by eukaryotic cells only to modify RNA. C. Ribozymes are ribonucleases used by bacteria and eukaryotic cells to modify DNA. D. Ribozymes are ribonucleosomes used by bacteria and eukaryotic cells to modify RNA.