Table of Contents
- 1 What structures are seen in the Elodea cells but not in the onion cells?
- 2 What structures do you see which were not present in onion cells?
- 3 What differences and similarities did you observe in the plant Elodea and onion cells vs the animal cell human cheek cell )?
- 4 Are onion or Elodea cells smaller?
- 5 How many layers are there in an Elodea leaf?
- 6 Why is chloroplast visible in Elodea but not in onion?
What structures are seen in the Elodea cells but not in the onion cells?
mod 4 practice Lab quiz
| Question | Answer |
|---|---|
| Which of the following cell structures can be seen in a stained onion cell? | nucleus, nucleolus, and cell wall |
| The chemical compound in Elodea cells, but not in onion cells is _____. | chlorophyll |
What structures do you see which were not present in onion cells?
The clear epidermal cells exist in a single layer and do not contain chloroplasts, because the onion fruiting body (bulb) is used for storing energy, not photosynthesis. Each plant cell has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole.
What structures are found only in the Elodea or plant cell?
The elodea cell will have a central vacuole in addition to chloroplasts. Plant cells also have a cell wall which is not a structure found in animal cells.
What microscopic structures make up organisms such as Elodea?
Cells are the units from which the Elodea leaf is made. Cells are filled with a fluid called cytoplasm. Cytoplasm can sometimes be seen moving inside the cells of living plants. The green balls moving in the cytoplasm are chloroplasts.
What differences and similarities did you observe in the plant Elodea and onion cells vs the animal cell human cheek cell )?
Both onion and cheek cells had a nucleus and both had cytoplasm. Both onion and elodea cells had a cell wall and cytoplasm but the onion lacked chloroplasts.
Are onion or Elodea cells smaller?
An onion cell is approximately 0.13mm long and 05mm wide. An elodea cell is approximately 05mm long and 025mm wide.
How are the Elodea cells and the cheek cells different?
Elodea cells are more square and green and bigger. The onion and Elodea cells are interconnected like a brick formation, whereas cheek cells are just overlapping and kind of near to each other. What visible structures do the Elodea and the onion skin cells share? A cell wall, a nucleus, a cell membrane and a cytoplasm.
What 2 structures were visible when viewing plant cells like Elodea that are not found in animal cells?
Two characteristics that distinguish plant cells from animal cells are the presence of a cell wall and chloroplasts—structures that can be seen in the videos. In the videos, the chloroplasts are seen moving through the cell because of a phenomenon called cytoplasmic streaming: the cytoplasm flows around the nucleus.
How many layers are there in an Elodea leaf?
Elodea Leaf Cell Diagram The Elodea leaf is composed of two layers of cells. Only one layer of cells is in focus when using the high. Examining elodea (pondweed) under a compound microscope. solution) and a coverslip and observe the chloroplasts (green structures) and the cell walls.
Why is chloroplast visible in Elodea but not in onion?
Why is chloroplast visible in elodea but not in onion cells? Elodea does photosynthesis; onion cells do not and therefore, lack chloroplast. Onions are bulbs that are found underground and do not receive sunlight.
What kind of energy does the Elodea produce?
The elodea like all green plants uses the process of photosynthesis to produce organic energy molecules. Oxygen is a by product of the process of photosynthesis. Oxygen can be observed leaving the elodea cells. Under a microscope the green chloroplasts inside of the cell can be observed.
How big is the plasma membrane of an Elodea?
The plasma membrane is too thin to see at this magnification. In the printed image the students work with, the mitochondria aren’t visible. What’s the Size? A “typical” Elodea cell is approximately 0.05 millimeters long (50 micrometers long) and 0.025 millimeters wide (25 micrometers wide).