A finch species living in the Galapagos Islands feeds on small insects found in flower buds. Its bill is most likely
A. small and narrow.
B. broad and powerful.
C. mid-sized and very long.
D. broad and sharp.
Answer: A
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Which of the following is human's closest living relative?
A) Gibbons B) Gorillas C) Chimpanzees D) Baboons
Which of the following is responsible for the cohesive property of water?
(A) Hydrogen bonds between the oxygen atoms of two adjacent water molecules (B) Covalent bonds between the hydrogen atoms of two adjacent water molecules (C) Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule (D) Covalent bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule (E) Hydrogen bonds between water molecules and other types of molecules
The sequencing method that cuts DNA segments into fragments, arranges those fragments based on overlapping nucleotide sequences, and then clones these fragments is called
A. RFLP sequencing. B. shotgun sequencing. C. clone-by-clone sequencing. D. consensus sequencing.
Antibody-antigen complexes are targeted by both macrophages and
a. helper T cells. b. B cells. c. complement. d. cytotoxic T cells. e. recombination signal sequences.