Which statement best describes the structure of DNA? A. A single strand of amino acids B. A single strand of nucleotides C. A double strand of nucleotides D. A double strand of amino acids

PKU is a recessively inherited disease. Two parents who have never been diagnosed with the disorder have a baby that tests positive for PKU. Which of the following is the best explanation? Answer

Why are there many niches of species in one mountain

Is ATP a molecule?

What is the litho spheres liquid density

Why there are fewer animals in a desert than in a rainrorest?

The chemoreceptors of the tongue respond to monosaccharides (sugars), metal ions (salty tastes), alkaloids, and acids. which type of receptor do you think is the most sensitive? why?

Explain why controlling the proteins in an organism controls the organisms characteristics

Which statement is false concerning lactic acid? a. It is formed during fast glycolysis b. It is formed when hydrogens combine temporarily with pyruvate c. It can diffuse into the blood and be carried away from the site of production d.

Imagine that you are observing an enzyme-catalyzed reaction in the lab. Every time you add more enzyme, the reaction rate increases proportionally until the reaction rate suddenly levels off.

Which human activity has had the greatest impact on climate change? A. deforestation B. burning fossil fuels C. production of nuclear waste D. building skyscrapers