Within which organelle do plants carry out cellular respiration?

Which of the following would be LEAST likely to diffuse freely across the membrane of a cell?

Bamboo grows very quickly, at rates of even a few feet per day, making woody tissue that is reinforced by cellulose. Where does the DRY MASS of this plant mostly come from?

I understand that I must remain fully in view of the external webcam for the entire duration of the test, including while capturing and uploading my work at the end. If I need to step away briefly for an urgent reason, I will say so aloud before leaving and return as quickly as possible, keeping the webcam and screen active.

At the end of the real test, you’ll scan and upload your handwritten work as a single PDF file. This question is here to help you practice that process in advance using at least two handwritten pages. To simulate the actual procedure: Use your phone to scan two or more handwritten pages and combine them into a single PDF. Recommended apps: Notes (iOS), Adobe Scan, CamScanner, or iLovePDF.com Remain on camera while scanning and uploading. Upload the PDF to this question before clicking Submit Quiz. Do not exit Honorlock or the Canvas quiz until your PDF has been uploaded and the quiz is fully submitted. Reminder: Phone use is only allowed during this upload step. During the real test, it must remain face-down and visible on your desk until then. This question is not graded—it’s just to verify that you know how to scan, combine, upload, and submit your work correctly before test day.

The mycelium is a highly branched structure of fungal filaments. The image below shows the fuzzy, hairy mycelium of oyster mushrooms growing on coffee grounds. (Image credit Tobi Kellner, CC BY SA 3.0) This mycelium’s structure suits its function because it…

In plants, plasmodesmata allow substances to travel directly between the cytoplasm of neighboring cells. Which structures perform a similar function in animals?

Which of the following would be LEAST likely to diffuse freely across the membrane of a cell?

Why do our brains die quickly if we stop breathing?

Suppose a person’s cells were exposed to a poison that BLOCKS nuclear pores. What would be the most DIRECT effect of blocking the nuclear pores?