Name 2 essential roles that enzymes play in cells

4. How is a scientific hypothesis different from a scien- tific theory?

Chlorophyll? A. Uses oxygen to make food B. Reflects red and blue light C. Traps light energy D. Is yellow in color

Which example best illustrates the difference between a community and a population? A) The two terms are interchangeable, a population IS a community. B) All the people in a town would be a community; all their cattle would be a population.

Which kind of molecule is used by organisms to store and transmit genetic material? nucleic acid carbohydrate protein lipid

What is a flowering seed plant called? angiosperm gymnosperm fern moss

Which branch of chemistry studies the compositions if substances? the environmental impact of chemicals?

The desert tortoise digs and burrow and hides in it during the day to stay cool because of the extreme heat above ground. Which characteristics of life does this behavior best illustrate

Which is not needed in air for water condensation to occur?

What statement explains why earthquake tend to be deeper near subduction zones

Why should the agar plate be sterile before the bacteria are placed on it