If a nail is pounded into the trunk of a tree, what plant structure would it encounter first?
A) phloem
B) xylem
C) cork
D) cork cambium
C
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The results of the coccolithophorid experiment done by Riebesell and colleagues showed that:
A. increasing CO2 levels lead to incomplete coccolithophorids. B. increasing pH levels lead to decreasing calcification rates. C. decreasing CO2 levels lead to deformed coccolithophorids. D. decreasing pH levels lead to significantly reduced growth rates. E. None of the answer options is correct.
Triglycerides are
a. carbohydrates. b. nucleotides. c. proteins. d. neutral fats. e. amino acids.
A proto-oncogene that gains function due to amplification, translocation to a more transcriptionally active area of the genome, or a mutation that causes either an increase in function or the suppression of down-regulation, is
A) a pseudo-oncogene. B) recessive. C) dominant. D) an oncogene. E) C and D only
Why are resistant organisms found often in hospitalized patients?
A) stringent efforts maintain sanitary conditions B) many infections in patients are being treated with different antibiotics C) doctors are treating outpatients with multiple antibiotics D) two of the above