A researcher is culturing cells that require oxygen to live in an incubator where the gas levels are carefully regulated.
If the researcher observes that the pO2 in the incubator is 200 mmHg, what can the researcher deduce about the pO2 of her cells?

A) The pO2 of her cells is greater than 200 mmHg.
B) The pO2 of her cells is less than or equal to 200 mmHg.
C) The pO2of her cellsmustbe greater than 400 mmHg.
D) No determination can be made regarding the pO2 in these cells.
E) None of the answer options is correct.

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .

Listed in the item bank are some key terms and expressions associated with the categories seen in the venn diagram. to find out more information about items, some have more details available when you click on them. drag and drop each item onto the proper area of the diagram. if an item describes more than one category, be sure to place it in the overlapping space. viruses are tiny infectious pathogens that cause many different diseases, such as polio, and the flu. though they are similar to one celled organisms in some ways, in many ways they are very different. use the venn diagram below to show the similarities and differences between viruses and living organisms.

Look at the photo of the leaf. which term best describes this leaf?