2.3.1 Organelle Structure and function nucleus enclosed in double membrane with pores contains chromosomes with genes made of DNA to control protein synthesis ribosomes made of RNA and protein free in cytoplasm or attached to RER site of protein synthesis rough endoplasmic reticulum interconnected sacs with ribosomes attached transport proteins to other parts of cell smooth endoplasmic reticulum synthesis of lipids and steroids mitochondria double
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Unit 2 Bullet Point Handouts Tests for closely-related species (Compare) DNA; Sequence of bases/nucleotides; DNA hybridisation; Separate DNA strands / break hydrogen bonds; Mix DNA/strands (of different species); Temperature/heat required to separate (hybrid) strands indicates relationship; Compare same/named protein; Sequence of amino acids /primary structure; Immunological evidence – not a mark Inject (seahorse) protein/serum into animal; (Obtain) antibodies/serum; Add protein/serum/plasma
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Triphosphate (ATP). It produces more ATP because it has oxygen present (aerobic) this is used more effectively in the body for things like growing. The rest is wasted through heat as a bi-product which can be good as we need to stay warm. ATP is the unit for measuring energy. Respiration without oxygen produces 2 ATP so the energy is not as efficient as there is not as much ATP being produced. Whereas from the equation where oxygen is present‚ it produces 38 ATP which is more efficient which is used
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Unit 5 Written Test I. Express in one word: 1) to discuss matters in order to come to an agreement; 2) to go beyond what is allowed or necessary; 3) keeping of law‚ custom‚ duty; 4) to prevent smb. from doing smth‚ to bring to nothing; 5) to persuade a person to do or take smth. by using unfair methods‚ tricks. II. Give E. equivalents to: 1) взаимодействие человека и машины; 2) глубокие перемены; 3) устранять‚ исключать‚ уничтожать; 4) уроки труда; 5) коррективный; заменять учителя; 6) доступ‚ подход;
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For Examiner’s Use Candidate Number Surname Other Names Examiner’s Initials Candidate Signature Question General Certificate of Secondary Education Higher Tier January 2013 Science A BL1HP H Unit Biology B1 Biology Unit Biology B1 Wednesday 9 January 2013 9.00 am to 10.00 am Mark 1 2 3 4 5 6 7 8 TOTAL For this paper you must have: a ruler. You may use a calculator. Time allowed 1 hour Instructions Use black ink or black ball-point pen. Fill in the boxes at the top of this page
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TOPIC 5 ECOLOGY 5.1.1 The study of the interactions between organisms and their environment. ENVIRONMENT = all the factors that affect an organism. 5.1.1 ABIOTIC FACTORS = non-living factors in an environment BIOTIC FACTORS = living factors in an environment ABIOTIC BIOTIC water fish chemicals in water aquatic plant depth fungi temperature protists - algae light Relationship - Photosynthesis Wet lands = also called ‘estuary’ Ecosystem: - A stable‚ settled
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ASBiology and Disease * Causes of disease * Pathogens Disease suggests a malfunction of the body or mind which has an adverse effect on good health For a micro-organism to be considered a pathogen it must * Gain entry to the host * Colonise the tissue of the host * Resist the defences of the host * Cause damage to the host tissues Pathogen Infection Disease Entry pathways * Gas exchange system * Digestive system Natural defences * Mucous layer
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BIOL 3350 Review Test 5 1. What is the overall function of the kidneys? They control the water to electrolyte balance and remove nitrogenous waste. Regulate the inner environment of the body. 2. What are the functional units of the kidney? Nephron 3. What is the bulk of the energy used for by the kidney? Active Transport of sodium and co-transport of electrolytes and other substances. 4. Describe juxtomedullary nephrons. They penetrate the entire length
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Biology Unit 4 Chapter 1: “Terrible Lizards” Paleontologist: someone who studies “ancient organisms” Paleobiology – the study of ancient life Paleontology is particularly important with regard to scientific theory‚ since for many children dinosaurs are the first exposure to scientific concepts Early Dino Stuff In 1676- large meat- eating femur (Megalosaurus) was discovered and people thought it was a giant human’s scrotum – “Scrotum humanum” First scientific name given to dinosaur Prior to 1800s
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[pic] Faculty of Science Undergraduate Modular Scheme Session 2010/2011 Semester 2 Level 4 MODULE: LS1180: Genetics and Molecular Biology DATE: 31 May 2011 TIME: 09.30 – 11.30 Instructions to Candidates This paper contains THIRTY-EIGHT questions in FIVE sections: Sections A‚ B‚ C‚ D and E. Answer THIRTY-FOUR questions only Section A: THIS SECTION HAS BEEN WITHHELD BY THE FACULTY Answer ALL THIRTY questions on the MCQ sheet provided Section
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