A host species that harbors a developmental stage of a parasite, but in which the parasite does not reach maturity, is referred to as a(n) ________ host
Fill in the blank(s) with correct word
intermediate
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Which group is the sister group to humans?
a. earthworm b. lizard c. tuna d. mouse e. duck
Amino acids are linked by what kind of bonds
to form the primary structure of a protein? a. disulfide b. hydrogen c. ionic d. peptide e. none of these
DNA contains __________ but NOT __________
a. sulfur; phosphorus b. phosphorus; sulfur c. potassium; sulfur d. sulfur; potassium e. proteins; phosphorus
Answer questions 62–66 in reference to the five nucleotides
listed below:a. guanine b. cytosine c. pyrimidine d. thymine e. uracil M 62. Erwin Chargaff’s data indicates that within a species the amount of adenine is always equal to the amount of this. E 63. This nucleotide is not incorporated into the structure of the DNA helix. D 64. This nucleotide is a double-ring molecule. M 65. If one chain of a DNA molecule has a purine at a given position, this complements it on the other chain. D 66. Two hydrogen bonds connect adenine to __________ in the DNA molecule.