Cell Lab Quiz
What visible structures do the Elodea and the onion skin cells share?
A cell wall, a nucleus, a cell membrane and a cytoplasm.
What kingdom do the cheek cells belong to?
Animalia -Eukaryote
What kingdom do the Elodea cells belong to?
Plantae -Eukaryote
What kingdom do the red onion cells belong to?
Plantae -Eukaryote
What is the difference between the size and shape of the bacteria cells and the cheek cells?
Cheek cells are much larger than the bacteria cells. The bacteria cells are found INSIDE the cheek cells. The bacteria cells are capsule-shaped and the cheek cells are round.
What was the purpose of the methylene blue stain?
Cheek cells are transparent so it helps the cell stand out. Also, it's easier to differ the bacteria cells (darker blue) from the cheek cells (lighter blue).
What evidence do you have that cheek cells are part of a tissue in a multicellular organism?
Cheek cells overlap and are a locked structure.
What is present in bacterial cells that cannot be seen?
DNA
What kingdom do the bacteria cells belong to?
Eubacteria -Prokaryote
What is eukaryotic?
Has a nucleus. (Eu=You, as in you and I have a nucleus because we are animals)
What is prokaryotic?
Has no nucleus.
What structures are present in cheek cells that aren't visible under 400X in a light microscope?
Mitochondria, lysosomes, and endoplasmic reticulum.
How do the onion and the Elodea cells compare to the cheek cells?
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 is the difference in size and shape between the onion and the Elodea cells?
The onion cells are slimmer and smoother, but they are also connected (like bricks) like the Elodea cells. Elodea cells are more square and green and bigger.
What structure is not visible under this microscope but is taking up the most space in the onion skin cell?
The vacuole.
In onion skin cells, where are the nuclei located usually?
They are usually found near the side because they have nothing to keep it in the center.
What structures do bacterial cells and cheek cells have in common?
They both have a cytoplasm and a cell membrane.
What structures do the Elodea cells have that the red onion skin cells lack?
They have chloroplasts because they need the chlorophyll to produce ATP energy from the sun (for food). Onions are underground and do not have access to the sun, so they lack chloroplasts.
In Elodea cells, where in the cell were most of the chloroplasts seen?
They were mostly in the outer edges because they were trying to retain energy.
What evidence do you have that the onion skin and cells are part of a tissue?
Tissue has interconnected cells that carry out the same function; onion cells are linked together and they all have the same purpose.
