Cell nucleus

developmental processes and canalization that are neither necessarily transmitted nor brought about by changes in the DNA sequence in both eukaryotes and prokaryotes. At the cellular level it focuses on the developmental process that leads to cell determination and cell differentiation (Jablonka & Raz, 2009). Narrowly defined, epigenetics refers to the scientific approach concerned with changes in the cell’s transcriptional potential through DNA-methylation, chromatin modulation and non-coding…

As the basic building blocks of all living things, cells are the smallest essential units of life. However, even though cells are competent self-sustaining units, their survival depends on receiving and processing information from the outside environment (whether that information applies to the stock of nutrients, temperature change, or variations in light levels). Cells have different functions; getting nutrients from food and turning them into energy, give structure to the body, carry out…

organelle come from and what does it do? The Mitochondria is the main source of energy or powerhouse in a cell. They are eukaryotic organelles that contain their own ribosomes and DNA and are surrounded by a double membrane. The more active a cell is, the more mitochondria are created. Depending on the structure and the shape of a cell, how much the mitochondria is constantly working to keep the cell functioning. Through cellular respiration this organelle produces the energy molecule, ATP.…

organs, there are six basic processes that a cell is required to go through. The six processes include: cell division, cell growth, differentiation, migration, apoptosis and cell connections. Cell division is a cell progressing through the cell cycle in order to multiply. Cell growth is a cell using the nutrient and optimal environment to grow in volume. Differentiation is a cell turning into specialized cells due to different gene regulators. Migration is a cell moving to the appropriate…

of DNA, cell survival, and plays a key role in regulating the body’s immune response to infection. It is important for IkBa is be present in cells and carry out its role because incorrect regulation of the NF-kB protein complex has been linked to cancer, viral infections, inflammatory diseases,…

EUKARYOTIC CELLS https://www.google.co.uk/search?q=images+of+prokaryotic+and+eukaryotic+cell&safe=active COMPARISON OF THE STRUCTURE OF EUKARYOTIC AND PROKARYOTIC CELLS STRUCTURE EUKARYOTIC CELL PROKARYOTIC CELL Nucleus Present Absent Cytoplasm Present Present Mitochondria Present Absent Chloroplasts Present Absent Endoplasmic Reticulum Present Absent Ribosomes Relatively large Small Cytoskeleton Present Absent Chromosomes DNA arranged in several DNA arranged in circular Cell Wall…

Meiosis starts: DNA Replicates I am going to draw a nucleus with DNA inside it represented with beads as the four pairs of chromosomes. Outside of the nucleus there will be centrioles drawn. This is where meiosis begins and replicates the cell Spindle fibers start to form on the centrioles and chromosome pairs bind together making tetrads. Nuclear membrane starts to dissolve. Nuclear membrane will be drawn in dashed lines. The chromosomes will be homologous pairs with centromere in the center…

Mitosis & Meiosis are the two major cell division processes. We know that mitosis is used for fulfilling a body’s cell division requirements. However, meiosis is use solely used for one purpose in a human body. It is used for the production of gametes cells, also known as the sex cells. Mitosis and meiosis are quite similar in processes with very few differences. One of the differences is that mitosis has one division whereas there are two divisions in meiosis. This is the reason meiosis is also…

Eukaryotic cells are cells whose nucleus is bound by a membrane; these cells contain organelles, which are structures each enclosed within its own membrane found only in eukaryotic cells, each organelle has a specific function inside a cell. One type of organelle is a lysosome, which are the organelles that dispose of waste and toxins. Lysosomes are fluid filled sacks which range in size from 0.1 to 1.2 micrometres and contain around fifty degradative enzymes that enable it to effectively…

Mitosis is used for all of your body’s cell division. It adds new cells during development and replaces old and worn-out cells throughout your life. Mitosis’ goal is to produce daughter cells that are genetically identical to their mothers and have two sets of chromosomes. Mitosis produces 2 diploid cells. Both mitosis and meiosis are processes of cell division. They have the same steps for cell division, prophase, metaphase, anaphase, and telophase. The stages of which are interphase, prophase…