Cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a century later, many debates about cells began amongst scientists. Most of these debates involved the nature of cellular regeneration, and the idea of cells as a fundamental unit of life. Cell theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchowcontributed to the theory. It was an important step in the movement away from spontaneous generation.
The three tenets to the cell theory are as described below:
All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
The first of these tenets is disputed, as non-cellular entities such as viruses are sometimes considered life-forms.
All living things are made of cells. Answer
A varied vegan diet usually has sufficient protein for human
requirements. Vegan foods that are high in protein include <span>beans, lentils, soy products, nuts, seeds, grains and grain products. However, there are some nutrients that may be deficient in a vegan diet,
such as vit B12, omega 3 fatty acids, calcium, iodine and iron. Surprisingly, a
'vegan' diet is not necessarily healthy, and many vegans actually have a very
bad diet, particularly those living in cities where being vegan is a health
fad, and where many vegans consume fast food vegan options. </span>
Answer:
The correct options are:
Phosphorous is a component of Dna and Rna
Phosphorous is a significant component in the make up of the phospholipid bilayer
Phosphorous is a key nutrient to increase crop yields
Explanation:
Phosphorus is a chemical element denoted by (P) that plays a vital role in tye structural characteristics of many biomolecules in a living cell. They are very important in an ecosystem and some of them are:
1. Phosphorous is a component of Dna and Rna - DNA and RNA are the two nucleic acids (biomolecules) known. Like every other biomolecule, they also are polymers made up of monomeric units called NUCLEOTIDE. A nucleotide is the building block of nucleic acids. The structure of a nucleotide consists of a pentose sugar (ribose in RNA, Deoxyribose in DNA), Nitrogenous bases (Adenine, Guanine, Cytosine and Thymine) and a phosphate group (PO43-). The phosphate part of the nucleotide is made up of a Phosphorus atom surrounded by four oxygen atoms.
2. Phosphorous is a significant component in the make up of the phospholipid bilayer - The plasma membrane of living cells has been described by the fluid mosaic model to contain a phospholipid bilayer. The phospholipid layer is AMPHIPATHIC i.e. contains water-fearing (hydrophobic) and water-loving (hydrophilic) regions. The water-loving part of the phospholipid bilayer is structurally made up of a phosphate head. The phosphate group here is also a Phosphorus atom surrounded by four oxygen atoms.
3. Phosphorous is a key nutrient to increase crop yields - Plants require certain nutrients that they absorb via their roots alongside water. Phosphorus is a macronutrient needed by plants for growth and development of. It is a major component of the nucleic acids, ATP in their cell.
Decomposes would be considered as a type of organism that wouldn't need camouflage as an adaptation due to not being preyed upon and their energy sources being dead remains or waste.
Answer: 4. Problem solver
Explanation: you're working to fix a known problem
