fish‚ mammals and plants Digestion and absorption of products Exchange of materials between blood in capillaries and tissues e.g. placenta Transpiration‚ root pressure‚ water and ion uptake by roots Translocation and mass flow hypothesis Osmoregulation by blood and kidney‚ unicells e.g. Amoeba Action potentials Synaptic transmission Muscle action Intracellular diffusion e.g. mitochondria‚ chloroplasts‚ enzyme action‚ DNA replication and protein synthesis 2. The different ways in which
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The Excretory System The importance of the excretory system The excretory system involves a process which removes unwanted products from the body’s chemistry. In general‚ excretion is the process of separating wastes from the body fluids and eliminating them. Examples include the removal of carbon dioxide in the air we exhale‚ and unwanted nitrogen in sweat‚ nails and hair. Explain the various methods of excretion in the human body There are four (4) organ systems which are responsible
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Sodium chloride‚ also known as salt‚ common salt‚ table salt‚ or halite‚ is an ionic compound with the formula NaCl. Sodium chloride is the salt most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms. As the major ingredient in edible salt‚ it is commonly used as a condiment and food preservative. [edit] Properties Thermal conductivity of pure NaCl as a function of temperature has a maximum of 2.03 W/(cm K) at 8 K and decreases to 0.069 at 314
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BSC2011C Final Review Unit 1 Review Ch. 25‚ 22‚ 23‚ 24‚ 26‚ 19‚ 27 Ch. 25 1. Life is metabolism and heredity. Metabolism is the mechanism that creates order and complexity from chaos‚ by acquiring and expending energy. Heredity is the ability of an organism to copy itself and it is broken down into: i. Multiplication‚ ii. Inheritance‚ iii. Variation. 2. DNA codes via RNA for 20 of naturally occurring amino acids. Amino Acids are the building blocks of proteins and bodies. DNA stores and transmits
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Maintaining a Balance Enzymes 1.1 Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates Enzymes are biological catalysts‚ meaning they are organic and speed up a chemical reaction without taking part in it. This means it has a vital role in metabolism where it ensures that the chemical reactions that make up metabolism can function fast enough to sustain life by lowering activation energy. Metabolism
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------------------------------------------------- Pituitary gland From Wikipedia‚ the free encyclopedia Pituitary gland | | Located at the base of the brain‚ the pituitary gland is protected by a bony structure called the sella turcica of the sphenoid bone. | | Median sagittal through the hypophysis of an adult monkey. Semidiagrammatic. | Latin | hypophysis‚ glandula pituitaria | Gray ’s | subject #275 1275 | Artery | superior hypophyseal artery‚infundibular artery‚prechiasmal artery‚ inferior
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How Acid Rain Affects Organisms in Aquatic Biomes Through the advancement of technology‚ the issue of the air surrounding the earth might have been one of the most often matters to be brought up and discussed among scientists and engineers. Acid rain is one of the more serious environmental problems and it is closely related to the air pollution. Nowadays‚ it has affected large part of US‚ Europe and Canada. People start to be concerned about acid rain since it is getting worse in the passed
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Disscusion In this experiment‚ we are required to observe‚ explain‚ identify and recognize the phylum under Kingdom Animalia. The phylum that we need to identify was Phylum Porifera‚ Phylum Cnidaria‚ Phylum platyhelminthes‚ Phylum Nematoda‚ Phylum Rotifera‚ Phylum Mollusca‚ Phylum Arthropoda‚ Phylum Echinodermata‚ Subphylum Cephalochordata and Subphylum Vertebrata (Fishes). Phylum Porifera The characteristic of members of Phylum porifera include asymmetrical or radial symmetry body plan. There
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Plants are valuable gift for animals; few are toxic but most possess high economical and medical values. Due to their prolonged usage they could cause some measurable changes in the physiological and metabolic functions of the organisms. Parkia biglobosa is a traditionally used natural product for medical‚ food‚ piscicide practices. Labeo rohita is a widely cultivated fresh water carp. We studied the impact of plant extract of P. biglobosa on fingerlings of L. rohita by analysing certain secondary
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Biology- Maintaining a Balance Summary 1. Most organisms are active in a limited temperature range 1. identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates Enzymes are proteins which act as catalysts in living things (they lower the amount of energy needed for a reaction‚ therefore increasing rate of reaction). Enzymes speed up reactions but are not used up by them. Enzymes catalyze only one
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