Bio 181 Quizzes | 100% Correct | Verified | 2024 Version

What is the difference between a microorganism and an organism? - Microorganisms are organisms that cannot be seen with the naked eye. What is an organism, according to your textbook? - Any living entity composed of one or more cells. Which of the following statements about Percival Lowell's conclusions is correct? Mark all that apply. - Lowell was wrong about there being a vast civilization of intelligent creatures on Mars. Lowell was right that the white areas he observed at the poles contain water ice.' Lowell appears to have been right about Mars having oceans, lakes and/or rivers on its surface that are now gone. We are certain that Lowell was wrong in some of his conclusions because - we have sent multiple missions to Mars, imaged its entire surface, and what he predicted was not there. What is (are) the difference(s) between the cell depicted on the left and the one on the right? Mark all that apply. - The cell on the left lacks a nucleus; the one on the right has a cytoskeleton. The cell on the left is a prokaryote; the one on the right is a eukaryote. Which of the following statements about this picture is correct? Mark all that apply. - This object (Alan Hills 84001) was found on Earth but is thought to have originated on Mars. The objects indicated by arrows look much like terrestrial (Earthly) microbes under the same type of microscope. The objects indicated by arrows could be formed by chemical and geological processes that have nothing to do with life.