Biology PEKA SPM 2013 Contraceptive methods Name : Bridget Lo Yen Class: 5 Amanah Subject Teacher : Puan Syafiza Ibrahim Date of submission : 26/7/2013 CONTENT PAGE NO. CONTENT PAGE A INTRODUCTION B DATA AND DISCUSSION DESCRIPTION PROCEDURES ADVANTAGES DISADVANTAGES DIAGRAM C CONCLUSION D REFERENCES INTRODUCTION 1. Family planning is used by couples who wish to limit their number of children‚ and to control the timing of pregnancy. This is important
Premium Birth control Menstrual cycle Condom
Echinoderm Echinoderm diversity Scientific classification Kingdom: Animalia Subkingdom: Eumetazoa Superphylum: Deuterostomia Phylum: Echinodermata Klein‚ 1734 Subphyla & Classes Homalozoa † Gill & Caster‚ 1960 Homostelea † Homoiostelea † Stylophora † Ctenocystoidea † Robison & Sprinkle‚ 1969 Crinozoa Crinoidea Paracrinoidea † Regnéll‚ 1945 Cystoidea † von Buch‚ 1846 Asterozoa Ophiuroidea Asteroidea Echinozoa Echinoidea Holothuroidea Ophiocistioidea † Helicoplacoidea †
Premium Animal
The Future of Human Evolution Alexander R. Prof. Kohn Darwinism and Evolution 12-6-96 Evolution‚ the science of how populations of living organisms change over time in response to their environment‚ is the central unifying theme in biology today. Evolution was first explored in its semi-modern form in Charles Darwin ’s 1859 book‚ Origin of Species by means of Natural Selection. In this book‚ Darwin laid out a strong argument for evolution. He postulated that all species have a common ancestor
Premium DNA Evolution Genetics
Biology textbook- pg. 80 3) Distinguish between the autotrophic and heterotrophic nature of plants and animals. Animals have heterotrophic cells; hence‚ they live off nutrients of other species by eating. Most plants have autotrophic cells‚ which allow them to generate their own food with photosynthesis. 4) Explain the following statement: ‘All living things depend on plants’. As animals are heterotrophs‚ they need to eat other species to survive. If mammals only depended on other mammals‚ there
Free Digestion Small intestine Digestive system
Tomato Sweetness Jessica Pursell American InterContinental University 01/18/2015 Biology IP2 Introduction You and your neighbor have small kitchen gardens where you both grow tomatoes. His blotchy green and red tomatoes taste much sweeter than your perfectly uniform red ones. Could the sweetness of the tomatoes be effected by the green chloroplasts in the fruit? Hypothesis I personally think that the green chloroplasts do play a part in the sweetness of the tomatoes because it doesn’t
Premium Fruit Tomato Plant
Abstract: The focus of this experiment was to identify unknown bacteria provided. The identification of unknown bacteria is beneficial in many aspects of the research of microorganisms and also aids physicians to treat patients correctly. Various tests were performed to provide the fermentation abilities‚ presence of particular enzymes‚ and biochemical reactions. Qualitative observations were made on the tests in identification process. The data from experimentation provided sufficient results
Premium Bacteria Bacillus Microbiology
According to Evolutionary Psychology‚ although human beings today live in a modern world of advanced systems and technology yet they retain inside them or in their inner traits and habit the mentality coming from their Stone Age ancestors. Evolutionary psychologists point out that there is no significant change in the human brain over the past 100‚000 years‚ and therefore modern man maintains the mind of his Stone Age ancestors. As quoted “you can take the person out of the Stone Age but you can’t
Premium Psychology Evolutionary psychology Prehistory
Buss: aims and context Current mate preferences are of particular interest to Evolutionary Psychologists as they are thought to demonstrate what types of characteristics were preferred by our ancestors. They also demonstrate the current direction of sexual selection‚ by indicating who is likely to be selected as a mate. These mate characteristics that are heritable will appear more readily in subsequent generations‚ whereas individuals lacking preferred characteristics will not be selected to mate
Premium Sex Human Female
They studied the defense evoked venom of three C. geographus. The significance of their venom is the paralytic toxins‚ which makes the most of this venom. The toxicity of the venom is needed to attack the prey in a high-speed. They also showed a correlation between the size of the animals and the injected venom. Despite their little size and slow-movement‚ they express a defensive mechanism‚ they extend their proboscis and inject the paralytic toxin which is lethal. C. geographus‚ usually hunt during
Premium Gene Evolution Symbiosis
energy and nutrients via trophic (feeding) relationships. It can be said that these two processes unify the ecosystem to function as a unit. Of equal importance in the functioning of the ecosystem is the evolutionary process‚ which is unique to living organism. Students of environmental biology will learn about the interactions and relationships of the vsrious components of the ecosystem by directly observing the organism in their natural habitat. Observation in the field will be strengthened
Premium Ecology Biology Ecosystem