Why is fiber an important part of a healthful human diet?
A) It is easily digested into monosaccharides, which are used for energy.
B) It may decrease the risk of certain types of cancers.
C) It increases the amount of HDL and LDL cholesterol in the body.
D) It contains more energy, gram for gram, than any other nutrient.
B
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Which of the following is not a role for methylation?
A. Methylation can protect bacterial RNA from restriction enzymes that are used to destroy viral DNA. B. Methylation of DNA can act as an inhibitor of gene expression. C. Methylation of DNA can enhance binding of certain proteins. D. Methylation is important in directing mismatch repair to repair the correct DNA strand. E. Methylation in eukaryotes can affect the formation of Z-DNA.
A (bacteriocidial/bacteriostatic/minimum) concentration of a drug is one at which microbes survive but are not able to grow and reproduce
What will be an ideal response?
Which of the following is not an autotroph?
a. yeast b. oak tree c. cyanobacterium d. algae e. grass
Any scientific information that appears in a written format is considered a primary source.
a. true b. false