discovered that harmless bacteria could turn virulent when mixed with bacteria that cause disease. A bacteria that is virulent is able to cause disease. Griffith had discovered what is now called transformation‚ a change in genotype caused when cells take up foreign genetic material. Avery’s Experiments In 1944‚ a series of experiments showed that the activity of the material responsible for transformation is not affected by protein-destroying enzymes. The activity is stopped‚ however‚ by a
Premium DNA
CXC School Based Assessment (Year 2013-2014) Name of Candidate:________________ School: __________________________ Centre #:________________________ Candidate#:______________________ Teacher: ________________________ Acknowledgement I would like to thank God for giving me the skills‚ resources and knowledge to carry out this investigation. I would also like to thank Mrs Johnson‚ my social studies teacher‚ and the social studies department for giving me the relevant information
Premium Educational years Ninth grade High school
w w w e tr .X m eP e ap .c rs om June 2003 GCE A AND AS LEVEL MARK SCHEME MAXIMUM MARK: 40 SYLLABUS/COMPONENT: 9700/01 BIOLOGY Paper 1 (Multiple Choice) Page 1 Mark Scheme A/AS LEVEL EXAMINATIONS – JUNE 2003 Syllabus 9700 Paper 1 Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Key D A C C A C D A B A B C B C D A D A C C Question Number 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Key D B B A C C B B C D A C C D B B D B B C
Premium Cell membrane Cell Red blood cell
increasingly complex models at all levels of biology. This paper shows the innovations in studying biology. It discusses the biological level of organization and it also describes the model that has seem to be found on the said level. It was also discussed on this paper that the complex models that was developed for the past few years must have the new methods and techniques to model it. The journal tackles the level of organization‚ multi-scale in modelling in biology‚ MD of ion channels and heart modelling
Premium Biology Life Organism
environmental conditions. Introduction Tetrahymeha Vorax consist of freshwater protists that usually are oval shaped if not almost egg shaped. This organism belongs to a specific group known as the ciliates (Cambell). They use specialized feeding structures such as the Buccal Cavity to ingest their food into their oral cavity (Shefferly‚ 2010). The Tetrahymena feed at different rates over time and can change with environmental variables. The food that is ingested into the Tetrahymena is contained in
Premium Temperature Scientific method Time
tenets of cell theory? • Cells are the basic structural and physiological units of all living organisms. • Cells are both distinct entities and building blocks of more complex organisms. OR • All living organisms are composed of one or more cells‚ Cells are the basic units of structure and function in an organism‚ and Cells come only from the reproduction of existing cells. OR • All cells come from preexisting cells. •
Premium DNA Protein Cell
provides energy for one’s body. (Metabolic is elevated) 3. In a person’s body that exercises‚ the lungs are important in sending more oxygen to the person’s cells‚ because the body consumes all available resources. The person’s body takes in oxygen quicker as they exercise‚ resulting in the person breathing harder/faster to keep up with the rate consumption. 4. During exercise‚ the oxygen enters into the bloodstream leading to the lungs and the cells take in the oxygen (capillary sacs). As the blood flows
Premium Muscle Oxygen Heart
Biology Worksheet Name ________ Chapter 11.1 Period _____ Section 11.1 The Work of Gregor Mendel Matching. Select the letter in front of the term that matches the statement. Type the “upper case” letter in the “answer” column. Use red font color. Q Term Answer Statement 1. A. Allele Process in sexual reproduction in which male and female reproductive cells join to produce a new cell. 2. B. Fertilization A specific characteristic of an individual. 3. C. Gamete One
Premium Genetics Gregor Mendel Pea
Shalacia Gilmore Fall 2012 BIO 1107 Natural Selection Lab INTRODUCTION In the 1850s‚ two scientists by the name of Charles Darwin and Alfred Russell Wallace composed the theory of evolution by natural selection. (1) Darwin characterized several claims needed for natural selection to happen‚ including heritable variation within the population‚ and the presence of more individuals than the environment can support. They also discovered that certain environments favored certain traits. These
Premium Natural selection Biology Evolution
Experiments investigating the effect of a particular factor on an enzyme-catalysed reaction are commonly used as assessed practicals in Biology. The reason for this is there are a number of factors that can be investigated‚ and therefore‚ a number of factors that can also be controlled. From our lecture‚ we are aware that the following can affect the rate of reaction: 1) Temperature: a. Independent variable: A range of temperatures should be investigated‚ with particular attention
Free Enzyme Digestion