Tool use is unique to humans

A. true
B. false


B

Biology & Microbiology

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Unspecialized structures in embryos that develop into female sex organs are the

A) Mullerian ducts. B) Wolffian ducts. C) oocytes. D) Barr bodies.

Biology & Microbiology

The displacement loop (D-loop) may be a characteristic of

A) centromeres. B) telomeres. C) A-DNA. D) B-DNA. E) Z-DNA.

Biology & Microbiology

Which classification level contains the greatest number of species?

a. class b. order c. family d. domain e. phylum

Biology & Microbiology

Why does immersion oil improve resolution?

A) It allows light to travel at a uniform speed on its way to the lens. B) It decreases the working distance. C) It increases the numerical aperture. D) It increases numerical aperture and maintains a uniform light speed. E) It increases the angle of refraction of the light.

Biology & Microbiology