Which is not a way in which light microscopes and electron microscopes differ? A) The image resolution of electron microscopes has allowed us to see clearer images of the microscopic world than we can view with light microscopes. B) Light microscopes can magnify an image to about 1000 times. Electron microscopes can magnify images 100's of thousand, if not millions of times. Light microscopes cannot be used to view living organisms. Metals, such as gold, must be used when preparing the slides for reflection of the light. D) Light microscopes use light energy, either natural or artificial, to create the magnified image being viewed. Electron microscopes use electrons, not photons or light rays, for visualization.

An adult who follows a 2000-kcal healthy u. s.-style eating pattern should consume ounce-equivalents from the protein foods group per day.

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation