How is translation initiated?
A. Two ribosomal subunits bind to the DNA sequence.
B. Two ribosomal subunits bind to the mRNA transcript.
C. DNA helicase binds to the origins of replication.
D. RNA polymerase binds to the promoter sequence.
Answer: B
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A cell biologist produces a karyotype of mouse somatic cells arrested in mitosis. She sees 40 chromosomes, which is completely normal for mice. Based on this information, what is the haploid number of chromosomes for mice?
A. 10 B. 20 C. 40 D. 80 E. It cannot be determined from the information provided 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 diploid cells? 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?
The exchange of gases with the respiratory
medium by animals occurs through the process of:
1.Active transport 2.Diffusion 3.Osmosis 4.Countercurrent exchangeWhich body system will return excess tissue fluid to the cardiovascular system?
A. lymphatic B. muscular C. urinary D. digestive E. neural
An endocrine gland is
A. required for remodeling bone. B. restricted to the production of growth factors. C. where neuronal signals are generated. D. the site at which hormones are produced and released into the blood.