What cells were choloroplants present in? What did they look like in various cells?

Explain redox reactions.

Which statements describe the genetic code? Check all that apply. A. It is a protein. B. It is a nucleic acid. C. It is found in DNA. D. It is found in the cell membrane. E. It is used to build an organism's structures. F.

The color pattern and texture of the body of a horned lizard (phrynosoma platyrhinos) allows it to blend into the ground of the desert in which it lives. this is an example of

Which research question about the largemouth bass and whirligig beetle would best match the scientists' observations? a. how log do fish spend rinsing their food? b. what is the favorite food of a larrgemouth bass? c.

Preschoolers' understanding that sugar continues to exist when it is dissolved in water is evidence that they a. do not understand cause-and-effect relationships. b. can think logically even about unfamiliar topics. c.

4. A tree dropping its leaves in the fall to conserve water and avoid freezing during winter is an example of?

Which is a single-celled fungus? A. mold B. mushroom C. alga D. yeast

Explain problems with using low-tar, low-nicotine cigarettes.

Some students are comparing the parts of a cell to the parts of the body. Which part best represents the cell membrane and why?

What is the difference between the nitrogen and carbon cycles?