Abiotic factors are ________
A) living components of an ecosystem
B) nonliving components of an ecosystem
C) living and nonliving components of an ecosystem
D) None of the above
B
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Which structure prevents blood flowing back into the atria during ventricular contractions?
A. semilunar valves B. atrioventricular valves C. sinoatrial node D. carotid blood shunts E. foramen ovale
A debilitating disease involving inflammation of the joints caused by an individual's own immune system is ________
Fill in the blank(s) with correct word
________ stimulates carbohydrate metabolism and reduces inflammation, and synthetic forms of this hormone have been used as anti-inflammatory agents.
A. ACTH B. Cortisol C. Epinephrine D. Aldosterone
You digest DNA from the frog Xenopus laevis with the enzyme NotI that produces sticky DNA ends. You can ligate your DNA to (select all that apply)A) blunt AluI ends from Xenopus laevis.B) sticky NotI ends from Xenopus laevis.C) blunt AluI ends from bacteria.D) sticky NotI ends from bacteria.E) sticky EcoRI ends from Xenopus laevis.F) sticky EcoRI ends from bacteria.
What will be an ideal response?