Which conception control method is most effective?
A) diaphragm
B) condom
C) minipill
D) vaginal ring
D
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The nucleotide sequences on DNA that actually have information encoding a sequence of amino acids are
A. exons. B. introns. C. enhancers. D. proteins.
A Type III functional response is the most commonly reported for predators
Indicate whether the statement is true or false
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 only emit energy if they are exposed to higher temperatures. C. Radioactive isotopes are atoms that are stable and as a result emit energy in a process called radioactive decay. D. Radioactive isotopes are atoms that are unstable but unless actively disturbed by some chemical process will remain intact and pose no problems.
Two aqueous solutions are separated by a selectively permeable membrane that allows water to pass through but does not allow starch to pass through. Solution A is 10% starch and solution B is 5% starch. What will occur?
A) Water will diffuse from solution A to solution B. B) Both water and starch will diffuse from solution B to solution A. C) Starch will diffuse from solution A to solution B. D) Water will diffuse from solution B to solution A. E) Starch will diffuse from solution B to solution A.