The function of RNA polymerase is to
A) catalyze the formation of phosphodiester bonds between deoxyribonucleotids.
B) catalyze the formation of phosphodiester bonds between ribonucleotides.
C) cleave mRNA to remove introns.
D) activate tRNAs.
Answer: B) catalyze the formation of phosphodiester bonds between ribonucleotides.
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A geneticist examines a somatic cell from a fly during metaphase of mitosis and determines that 16 chromatids are present. If a germ-line cell from this species divides by meiosis, then at the end of meiosis I (including the first cytokinesis) each cell will contain
A. 8 chromosomes with 8 DNA molecules. B. 8 chromosomes with 16 DNA molecules. C. 4 chromosomes with 4 DNA molecules. D. 4 chromosomes with 8 DNA molecules. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about meiosis? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following statements about eukaryotic chromosomes is False?
A: Eukaryotic chromosomes typically are much larger than prokaryotic chromosomes. B: Eukaryotic chromosomes are replicated by a semi-conservative replication process. C: Eukaryotic chromosomes have repetitive sequences at their ends known as telomeres. D: Eukaryotic chromosomes have a single origin of replication located at one end of the double helix . E: Eukaryotic chromosomes are linear.
Which organ system is utilizing positive feedback within an organism?
a. the reproductive system b. the excretory system c. the endocrine system d. the lymphatic system
In science, a theory is:
A) a concept that you try to prove experimentally. B) a general set of principles supported by evidence. C) a guess based on previous observations. D) something that is always true.