What is not a common ecosystem service of estuaries, mangroves, AND salt marshes?
Answer: Provide fuel
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Cells store energy in the form of ____
a. sunlight b. chloroplasts c. carbon dioxide d. glucose e. water
You are investigating a cell activity that you suspect is activated by a rise in intracellular calcium ions. Which of the following agents could you use to cause an increase in intracellular calcium in the cells you are studying?
A) cameleon B) A23187 C) phorbol ester D) sildenafil E) NO
What are attributes of oral contraceptives? (Check all that apply.)A) They contain a progesterone and sometimes an estrogen analogue.B) The progesterone is in the 21-day pills, and the estrogen is in the 7-day pills.C) They help protect against ovarian and endometrial cancer.D) They are appropriate for use by smokers over age 35.E) They have a low failure rate of only 1% to 5% a year.F) They act by inhibiting LH and FSH secretion, inhibiting ovulation.
What will be an ideal response?
Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination. Where would you expect these proteins to be expressed?
A. Bone marrow and thymus B. Blood serum C. Thyroid and parathyroid D. Thyroid only E. Bone marrow only