1. It is a membrane-bound organelle which originated from the ER.
2. It is the control center of the cell.
3. It is a cell that has no nucleus.
4. He was the first one who coined the term "cell".
5. He first discovered the nucleus of the cell by discovering pollen grains traveling in and out of the ovals in the seed of an orchid.
6. It is where the genetic material located.
7. What technique should be used to identify the cell wall?
8. These are small hair-like projections found mainly in Gram-negative prokaryotes.
9. Who made the last postulate of the cell theory?
2. It is the control center of the cell.
3. It is a cell that has no nucleus.
4. He was the first one who coined the term "cell".
5. He first discovered the nucleus of the cell by discovering pollen grains traveling in and out of the ovals in the seed of an orchid.
6. It is where the genetic material located.
7. What technique should be used to identify the cell wall?
8. These are small hair-like projections found mainly in Gram-negative prokaryotes.
9. Who made the last postulate of the cell theory?
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Answer:
1.(i don't know)
2.nucleus
3.prokaryotes
4.Robert Hooke
5.Robert brown
6.DNA
7.cell staining
8.pili
9.(i don't know)
Explanation:
2.The nucleus is like the remote control center of the cell. It acts as the cell's brain by telling it what to do, how to grow, and when to reproduce. The nucleus is home to the cell's genes.
3.Prokaryotes are organisms whose cells lack a nucleus and other organelles. ... Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm.
4.In the 1660s, Robert Hooke looked through a primitive microscope at a thinly cut piece of cork. He saw a series of walled boxes that reminded him of the tiny rooms, or cellula, occupied by monks. Medical historian Dr. Howard Markel discusses Hooke's coining of the word "cell."
5.Well, Brown was studying and breeding plants. He knew that it took pollen grains in order to create new plants. While watching the process of pollen grains fertilizing a plant, he noticed that there were ovals inside the plant cells and the pollen was moving in and out of the ovals.
6.Genetic material is called DNA and RNA. DNA is the hereditary material found in the nucleus of eukaryotic cells (animal and plant) and the cytoplasm of prokaryotic cells (bacteria) that determines the composition of the organism.
7.Cell staining is a technique that can be used to better visualize cells and cell components under a microscope. By using different stains, one can preferentially stain certain cell components, such as a nucleus or a cell wall, or the entire cell.
8.Pili. The terms pili and fimbriae are usually used interchangeably to describe the thin, hairlike appendages on the surface of many Gram-negative bacteria and proteins of pili are referred to as pilins.