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Why does DNA clump together in DNA extraction?
Single molecules of DNA are long and stringy. Each cell of your body contains six feet of DNA, but it's only one-millionth of an inch wide. To fit all of this DNA into your cells, it needs to be packed efficiently. To solve this problem, DNA twists tightly and clumps together inside cells. Even when you extract DNA from cells, it still clumps together, though not as much as it would inside the cell.
Large numbers of ribosomes are present in cells that specialize in producing what molecules?
Large numbers of ribosomes are present in cells that specialize in producing proteins. Ribosomes are the cellular machinery responsible for protein synthesis.
Do T cells express MHC II?
No, T cells do not express MHC II. MHC II molecules are primarily found on antigen-presenting cells, such as dendritic cells, macrophages, and B cells, and are involved in presenting antigens to T cells for immune responses. T cells, on the other hand, express MHC I molecules, which present antigens to other immune cells.
What organic molecules studied today are present in cells?
Some important organic molecules studied today that are present in cells include carbohydrates (such as glucose and cellulose), lipids (such as fats and phospholipids), proteins (made up of amino acids), and nucleic acids (such as DNA and RNA). These molecules play crucial roles in various cellular processes like energy storage, cell structure, enzyme function, and genetic information transfer.
What is found in all cells?
Protoplast is found in all cells
What molecules studied today are present in cells?
Proteins, carbohydrates, and lipids
Why does DNA clump together in DNA extraction?
Single molecules of DNA are long and stringy. Each cell of your body contains six feet of DNA, but it's only one-millionth of an inch wide. To fit all of this DNA into your cells, it needs to be packed efficiently. To solve this problem, DNA twists tightly and clumps together inside cells. Even when you extract DNA from cells, it still clumps together, though not as much as it would inside the cell.
How do carbohydrates affect DNA isolation from plant cells?
Carbohydrates can interfere with DNA isolation from plant cells by co-purifying with the DNA during extraction process. Carbohydrates can form complexes with DNA, leading to reduced DNA yield or impurities in the DNA sample. To overcome this, various DNA extraction methods usually include steps to remove carbohydrates and other contaminants from the DNA sample.
Would iron be the trace element present in hemoglobin molecules in the red blood cells?
Yes.
Are lipids eucaryotic cells?
Yes, lipids are present in both eukaryotic and prokaryotic cells. In eukaryotic cells, lipids play various roles such as forming cell membranes, serving as energy storage molecules, and acting as signaling molecules.
Large numbers of ribosomes are present in cells that specialize in producing what molecules?
Large numbers of ribosomes are present in cells that specialize in producing proteins. Ribosomes are the cellular machinery responsible for protein synthesis.
Which cell organelle is not present in Eukaryotes?
A Eukaryotic cell does not have a flagellum.
Where are ribosomes present?
Inside cells in the cyptoplasmThey are found on rough ER mainly. Also in mitochondria and chloroplasts
Difference between MHC class1 and MHC class2 molecules?
MHC proteins express antigens on a cell surface for T cells to identify whether the antigens presented are self or foreign. There are two classes MHC I and MHC II. They differ in which cells they require to activate depending on the pathogen present.
Do T cells express MHC II?
No, T cells do not express MHC II. MHC II molecules are primarily found on antigen-presenting cells, such as dendritic cells, macrophages, and B cells, and are involved in presenting antigens to T cells for immune responses. T cells, on the other hand, express MHC I molecules, which present antigens to other immune cells.
Which type of protein is used by cells of the immune system to distinguish normal cells from foreign or infected cells?
Cells of the immune system use proteins called major histocompatibility complex (MHC) molecules to distinguish normal cells from foreign or infected ones. MHC molecules present peptide fragments derived from proteins within the cell on their surface. This allows T cells to recognize and bind to infected or abnormal cells, triggering an immune response. There are two main classes of MHC molecules: Class I, present on nearly all nucleated cells, and Class II, primarily found on antigen-presenting cells.
What organic molecules studied today are present in cells?
Some important organic molecules studied today that are present in cells include carbohydrates (such as glucose and cellulose), lipids (such as fats and phospholipids), proteins (made up of amino acids), and nucleic acids (such as DNA and RNA). These molecules play crucial roles in various cellular processes like energy storage, cell structure, enzyme function, and genetic information transfer.
