Which best describes plasmid?

a. viruses that cause the common cold

b. a tube that comes off the virus

c. a piece of dna transferred by a bacterium

d. a protective shell around a virus

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

What best describes the dropping height of a ball that bounces back up to a height of 45 cm