primary genetic material that makes each individual different. DNA is the molecule that makes up chromosomes each pair of chromosomes contains DNA from one parent. DNA is found in the nuclei of eukaryotic cells and prokaryotic cells in living organisms. DNA is so important it is unable to leave the nucleus therefore the body makes RNA to carry information out into the cytoplasm. The three major components of DNA nucleotide monomers are phosphate‚ 5 carbon ring sugar (de-oxyribose) and a nitrogenous base
Premium DNA Gene Genetics
century‚ little was known about cell membranes. Until the early 1950s‚ the biological cell membrane was rarely mentioned in scientific literature. It was recognised that something was probably there‚ but hardly anything about it was known. Considering the lack of technical equipment available a century ago‚ scientists such as Charles Overton and Edwin Gorter were not only exploring new territory in looking at the properties of cell membranes‚ but laying the way for future cell biologists. Scientists had
Premium Cell membrane Lipid bilayer Red blood cell
chromosome is different in different cell types. D) It consists of a single linear molecule of double-stranded DNA. E) Active transcription occurs on euchromatin. Answer: C Topic: Concept 19.1 Skill: Comprehension If a cell were unable to produce histone proteins‚ which of the following would be expected to occur? A) There would be an increase in the amount of "satellite" DNA produced during centrifugation. B) The cell’s DNA couldn’t be packed into its nucleus. C) Spindle fibers would not form
Premium DNA Gene Cell nucleus
gene produced the lamin a protein‚ which is the structural scaffolding that holds the nucleus of a cell together. The abnormal lamin a protein that causes Progeria is called progerin. Progerin makes the nucleus
Premium Senescence Cell nucleus Death
Chapter 2 Test Review Importance of Cell Division Cell division allows organisms to reproduce‚ to grow‚ and to repair damage. Osmosis- the movement of a fluid‚ usually water‚ across a membrane toward an area of high solute concentration. Diffusion- a transport mechanism for moving chemicals into and out of the cell‚ from an area of higher concentration to an area of lower concentration. Active transport- requires chemical energy Passive transport- requires no energy because the molecules move
Premium Cell cycle Mitosis Cancer
Cells- Bill Nye the Science Guy http://www.youtube.com/watch?v=X6N82No4Nz8 1. All the plants and the animals in the WORLD are made up of _______. 2. We have about______ trillion cells in our bodies. 3. Different cells and _______ jobs. 4. Cells are just like ______. 5. The difference between cells and bricks is that CELLS are ______. 6. ALIVE OR NOT a. A happy family____ b. An active volcano_____ c. Sponge Cake______ d. Sea Sponge_____ 7. Cells are a lot like a room. Instead of walls they have cell
Premium DNA Gene Cell nucleus
Compare red and white blood cells - what cellular features are present in white cells but not in red blood cells and vice versa? Include a digital image of the blood cells present in the permanent dry. Red Blood cells carry hemoglobin inside of them which helps carry oxygen from the lungs to the rest of the body. Hemoglobin is what gives blood cells the red pigmentation. The amount of blood cells present in the blood give it the red color it has. White blood cells‚ on the other hand‚ are few
Premium Protein Performance Blood
Comparison of Plant and Animal Cells Introduction Eukaryotic cells are very complex; there are many organelles‚ each serving a distinct function‚ present in eukaryotic cells. We can divide the eukaryotic group of cells in to two main groups‚ according to the presence of these membrane bound organelles‚ and the structural differences amongst the cells and their organelles. The two groups of eukaryotic cells are plant and animal cells. Nucleus The reason that plant and animal cells are not divided in to two
Premium Cell
are made up of? If you answered cells‚ then you’d be correct. A cell is the smallest thing that can be alive‚ and all living things are made of cells! Cells are made of tiny organelles that work together to help the cells live‚ just like organs in our body keep us alive. You must also remember that there are two types of cells. Eukaryotic and Prokaryotic. The differences are simple; Eukaryotic cells are more complex and have more organelles while Prokaryotic cells are simple and have little organelles
Premium Organism DNA Eukaryote
Chapter 1 Cell Theory- in the 18th century‚ two scientists came up with the cell theory. Schleiden and Schwen. 3 corollaries of the cell theory: -all cells are alike in chemical composition -all cells store and process information in the same way -all cells arise from other cell through cell division 5 types of different Microscopes 1. Light Microscope- produces 2-D image Direct descendants of Hooks scope> take two lenses to a light source> used this to magnify images up to 1‚000 fold.
Premium Cell Atom Bacteria