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Plants have chloroplasts, which contain chlorophyll, in order to produce sugars from carbon dioxide and water by utilizing light energy. Because humans are animals, and therefor use far more energy than plants, we cannot produce enough energy by making our own food. Thus, we don't need chloroplasts. Plants also have cell walls, in order to allow them to support themselves, because they don't have a skeleton.
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What cellular structures are found in the epidermal cells of humans but not in epidermal cell of leaves?
Melanocytes, which produce melanin for skin pigmentation, are found in human epidermal cells but not in leaf epidermal cells. Additionally, human epidermal cells contain structures like Langerhans cells for immune response, which are not present in leaf epidermal cells.
How do antibiotics work to target bacteria without causing harm to the surrounding human cells?
Antibiotics work by targeting specific structures or processes in bacteria that are essential for their survival, such as cell wall formation or protein synthesis. These structures or processes are not present in human cells, so the antibiotics are able to selectively kill the bacteria without harming human cells.
Are cells the same in the human body?
There are different types of cells, but the structures are basically same, with similar organelles and other structures.
What structures are present in protists that are also present in human cells?
Both protists and human cells contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus. Additionally, both cell types have a plasma membrane that regulates the exchange of materials with the environment.
Does human sperm contain cilia?
No, human sperm cells do not contain cilia. Cilia are small, hair-like structures that can be found on certain cells. However, sperm cells have a flagellum, which is a long tail-like structure that allows them to swim.
How many types of cells are present in the human body?
6 cells
What two structures are not present in a human cheek cell but would be present in a cell from the leaf of a French bean plant?
Chloroplasts and a cell wall are two structures that would be present in a cell from the leaf of a French bean plant but not in a human cheek cell. Chloroplasts are responsible for photosynthesis, while the cell wall provides structural support and protection to plant cells.
How many brain cells are present in human?
Uncountable
How many somatic cells are present in the human body?
The human body contains approximately 37.2 trillion somatic cells.
If 2.2 picograms of DNA could be extracted from a certain number of human muscle cells about how many picograms of DNA could be extracted from the same number of human gamete cells?
Since human body cells (like muscle cells) contain twice the amount of DNA present in human gamete cells, roughly 1.1 pg of DNA can be expected out of human gamete cells
How many brain cells present in human brain?
millions
Different between human cell and animal cell?
Human and animal cells have the same basic structures, yet human cells usually have different jobs pertaining only to that particular cell.
