Photosynthesis is essential to animal life because it provides
A. CO2 for respiration.
B. O2.
C. organic molecules.
D. Both b and c are correct.
Ans: D. Both b and c are correct.
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Most of the effort involved in recombinant DNA technology involves
A) identifying and separating cells that contain the gene of interest. B) finding a restriction enzyme to cut DNA from a donor cell. C) identifying a cloning vector that can hold a gene. D) finding uses for recombined DNA.
All of the following are included in the Basidiomycetes EXCEPT ________.
A. stolons B. yeasts C. smuts D. puffballs
In humans, the type A and type B blood alleles are codominant to each other and both are completely dominant over the type O blood allele.
a. true b. false
In living organisms, the molecule most associated with temperature stability is _____.
A) molecular oxygen B) sugar C) hemoglobin D) sodium chloride E) water