Which component of a DNA nucleotide could be removed without breaking the polynucleotide chain?
A) Phosphate B) Nitrogen base C) Deoxyribose D) Ribose
B
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What role is not associated with coastal wetlands? a. They remove food from offshore communities
b. They act as a nursery to commercial fish. c. They act as a buffer during floods. d. They suppress impacts of tsunamis.
Two parents with type A blood have a child who is type O. The parents' genotypes must be
____________________ and ____________________ or they must have the ____________ phenotype. Fill in the blank(s) with the appropriate word(s).
In bacteria and eukaryotes, a mutation is when ________
A) the expression of a gene changes without the DNA sequence being changed B) the nucleotide sequence in an mRNA molecule is directly changed C) the amino acid sequence in a protein molecule is directly changed D) DNA is unable to be replicated E) the nucleotide sequence in a DNA molecule is directly changed
An example of a protist intestinal parasite would be:
A) Giardia. B) Chlamydomonas. C) Clostridium botulinum. D) Yersinia pestis.