Chloroplasts also produce oxygen as a by-product of the process. Oxygen is a waste product for plants, and they expel it through structures called stoma, which are most abundant on the undersides of leaves.Chloroplasts only occur in the cells of plants and protists.
1 A 3d/4d ultrasound can cost anywhere from $100 to $300. 2  This price range depends mostly on how many features you wish to be included in your ultrasound experience.3  The more features you choose and the longer the session, the higher the cost will be. 4  On average, plan on spending anywhere from $100 to $1,000. A 3d/4d ultrasound can cost anywhere from $100 to $300. 2  This price range depends mostly on how many features you wish to be included in your ultrasound experience.
This is a good pricing guide for CT scan machines. A vanilla 4-slice CT scanner costs $85,000 to $150,000. A 16-slice scanner costs $145,000 to $225,000 and the top-of-the-line 64-slice CTs can cost up to $450,000. The machines may typically need annual maintenance, which can cost tens of thousands of dollars. The time taken for total testing is shorter than taken by MRI. 2  MRI cannot be done on patients who are claustrophobic as the patient has to remain inside the noisy machine for about 20-45 minutes. 3  CT scan is cheaper than an MRI. 4  A CT scan costs $1,200 to $3,200 while an MRI can cost up to $4,000.