How to review previous onion comment or tip

1. What is the conclusion for the onion root tip experiment?
2. How do you observe the cells of onion root tip under microscope?
3. Why do you think an onion root tip was used in the activity?
4. How do you preserve onion root tips for mitosis?
5. What is the observation of onion cell experiment?
6. What can you conclude about onion cell under microscope?
7. How do you view an onion under a microscope?
8. What are the observation of onion peel under microscope?
9. What instrument is used to observe onion cells?
10. What is the hypothesis of onion root tip?
11. Why are root tips important?
12. What is the main function of root tip?
13. What is the objective of the onion cell lab report?
14. What is the conclusion of human cheek cell lab report?
15. What happens at the root tip short answer?
16. What is the aim of onion peel experiment?
17. What are some interesting things you can see in the onion cells?
18. What is the onion concept?

What is the conclusion for the onion root tip experiment?

The conclusion of this lab was that Mitosis is essential for the production of new cells. In the case of the onion root sample, the cells were damaged leading to the tester to undergo Mitotic cell division and it was found that mainly Interphase and Prophase were the stages that occurred in this lab.

How do you observe the cells of onion root tip under microscope?

In order to examine cells in the tip of an onion root, a thin slice of the root is placed onto a microscope slide and stained so the chromosomes will be visible. The cells you'll be looking at in this activity were photographed with a light microsope and then digitized so you can see them on the computer.

Why do you think an onion root tip was used in the activity?

Why is onion root tip used to demonstrate mitosis in this experiment? It is because of the meristematic cells that are situated in the tip of the roots that render the most desirable and suitable raw material to study the different stages of mitosis. Onion is a monocot plant.

How do you preserve onion root tips for mitosis?

Keep the root tips in the fixative for 24 hours and then transfer them to 70% ethanol (for preservation and use in future). Onion root-tip cells have a cell cycle of approximately 24-hour duration, i.e., they divide once in 24 hours, and this division usually takes place about two hours after sunrise.

What is the observation of onion cell experiment?

Observations. There are a large number of regularly shaped cells lying side by side and each cell has a distinct cell wall. A distinct nucleus is present on the periphery of each cell. Lightly stained cytoplasm is observed in each cell.

What can you conclude about onion cell under microscope?

Onion skin cells seen through the microscope are also transparent. However, they are generally rectangular in shape, with a distinct cell wall. Like all cells, there is also a plasma membrane surrounding the cell contents, but it clings closely to the cell wall and is hard to see with a light microscope.

How do you view an onion under a microscope?

Peel a thin layer of onion (the epidermis) off the cut onion. STEP 2 - Place the layer of onion epidermis carefully on the glass slide, and cover with a cover slip. STEP 3 - Stain the layer of onion with food colouring. STEP 4 - View your onion cells.

What are the observation of onion peel under microscope?

You can see large, rectangular interlocking cells and observe visible cell wall, nucleus, large vacuoles, and some granules.

What instrument is used to observe onion cells?

The cells are easily visible under a microscope and the preparation of a thin section is straight forward. An onion is made of layers, each separated by a thin skin or membrane.

What is the hypothesis of onion root tip?

Hypotheses: The experimental hypothesis is that in root tips slices that have been treated with nocodazole, a chemical that interferes with microtubular polymerization, all of the cells will be arrested at the same stage of the cell cycle and that in untreated onion tip slices all of the different stages of the cell ...

Why are root tips important?

They anchor the plant to support the shoots above. They absorb water and mineral nutrients and conduct them upwards. They store carbohydrates and other nutrients that are a source of energy for biennials and perennials as they awaken and grow in spring. A root's tip is where most of the action takes place.

What is the main function of root tip?

Darwin realized that the root tip functions as a sensory organ, and that its role is of paramount importance not only for root growth but also for growth and development of the entire plant.

What is the objective of the onion cell lab report?

OBJECTIVE: To observe the structure of a plant cell. MATERIALS: onion skin, iodine, microscope, slide, cover slip. PROCEDURE: Remove a small piece of the inner surface of an onion skin.

What is the conclusion of human cheek cell lab report?

Answer: As in all animal cells, the cells of the human cheek do not possess a cell wall. A cell membrane that is semi-permeable surrounds the cytoplasm. ... The absence of a cell wall and a prominent vacuole are indicators that help identify animal cells, such as cells seen in the human cheek.

What happens at the root tip short answer?

Within the root tip, cells differentiate, actively divide, and increase in length, depending on in which zone the cells are located. Dividing cells make up the zone of cell division in a germinating plant.

What is the aim of onion peel experiment?

Conclusion:As cell walls and large vacuoles are clearly observed in all the cells, the cells placed for observation are plant cells. - Onion epidermal peel is made up of rectangular shaped cells. A nucleus, a central vacuole, a thin layer of cytoplasm, and a cell wall make up each cell.

What are some interesting things you can see in the onion cells?

Onion Cell

The nucleus is present at the periphery of the cytoplasm. The vacuole is prominent and present at the centre of the cell. It is surrounded by cytoplasm. The presence of a cell wall and a large vacuole are indicators that help identify plant cells, such as seen in the onion peel.

What is the onion concept?

Perhaps the approach most commonly used by security professionals with home security is the onion concept. This basic premise is that your home security should consist of multiple overlapping layers in order to deter and stop a potential intruder.