Btec National Applied Science Biology 39 Correctly Answered Questions Latest Update

SEM {Ans: Scanning electron microscope 3D}Smooth endoplasmic reticulum (ER) {Ans: -Network of membrane bound flattened sacs called cjsgetnae, no ribosomes -synthesis and transport of lipids and carbohydrates}Epithelial tissue {Ans: -Squamous tissue -columnar tissue -endothelium tissue}Endothelial tissue {Ans: -Layer of flattened cells, one layer thick -Found in heart, blood vessels -provides diffusion -produced by digestion into blood capillaries -blood plasma and tissue fluid In and out of blood capillaries -How arteriosclerosis develops: Carbon monoxide and high blood pressure can damage the inner lining of the arteries. White blood cells repair the damage and encourage the growth of smooth muscle and the deposition of fatty substances such as cholesterol under the endothelium linings of arteries, not on the surface. this is called atherosclerosis.}White blood cells Neutrophilis {Ans: -role of immune system -multi lobed nuclei, enables them to squeeze through small gaps when travelling to site of infection. -cytoplasm holds lysosomes that contain enzymes that are used to digest pathogens.}Nucleolus {Ans: -Dense spherical structure in the middle of the nucleus -makes RNA and ribosomes}