Which aspect of pigments makes them efficient in capturing light?

a. They all share a region where hydrogen atoms are covalently bonded to each other with single bonds.
b. They all share a region where hydrogen atoms are covalently bonded to each other with alternating single and double bonds.
c. They all share a region where carbon atoms are covalently bonded to each other with alternating single and double bonds.
d. They all share a region where c


Ans: c. They all share a region where carbon atoms are covalently bonded to each other with alternating single and double bonds.

Biology & Microbiology

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An example of a single-gene trait that distinguishes humans from other primates is

A) the presence of two sides to the brain. B) the abundance of fetal hemoglobin in humans. C) the lack of adult hemoglobin in marmosets and lemurs. D) our non-opposable thumbs.

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What category(s) of organic macromolecule allow(s) myelinated sheaths to act as electrical insulators?

a. proteins b. carbohydrates c. lipids d. nucleic acids e. proteins and nucleic acids

Biology & Microbiology

Why are the master genes of embryonic development so highly conserved?

What will be an ideal response?

Biology & Microbiology

The digestive tract of a nematode is most like which of the following?

A) a sock B) a soda straw C) a cup D) a baseball

Biology & Microbiology