Which cell structure is mainly responsible for releasing energy from food molecules in some single-celled organisms? 1.ribosome2.chloroplast3.cell membrane4.mitochondrion?

15 points come and ! which characteristic describes all bacteria? a rod-shaped b microscopic c multicellular d autotrophic

Select the best answer for the question, ly 12. which of the following behaviors is not an inherited behavior?

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a. earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c. earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.