Which of the following lies beneath the C horizon in soil?
a. bedrock
b. O horizon
c. soil base
d. water table
a. bedrock
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Production of the iron-storing protein ferritin is regulated by aconitase, which binds to a 30-nucleotide sequence at the beginning of the ferritin mRNA and interferes with ribosome binding. Aconitase must be a
A. transcription repressor protein. B. translation repressor protein. C. RNA interference protein. D. translation initiation protein. 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 already know about translational regulation? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
What type of receptor does IP3 bind?
A. G-protein coupled B. ligand-gated Ca2+ channel C. enzyme-linked D. sensor kinase E. phospholipase type-I
As you and a friend are entering a chemistry laboratory at your university, you see a sign that states: DANGER—RADIOACTIVE ISOTOPES IN USE. Your friend is an accounting major and has not had any science courses yet. She asks you what a radioactive isotope is and you respond correctly with:
A. Radioactive isotopes are atoms that are unstable and as a result emit energy in a process called radioactive decay. B. Radioactive isotopes are atoms that are stable and as a result emit energy in a process called radioactive decay. C. Radioactive isotopes are atoms that are stable and as a result only emit energy if they are exposed to higher temperatures. D. Radioactive isotopes are atoms that are unstable but unless actively disturbed by some chemical process will remain intact and pose no problems.
What causes smoker's cough?
A) Smoking affects the respiratory center neurons in the medulla. B) Smoking damages the cilia that normally remove debris-laden mucus. C) Nicotine irritates the lining of the lung. D) Carbon monoxide in the smoke triggers the cough reflex.