Biology is a natural science concerned with the function‚ growth‚ structure‚ evolution and distribution of organisms. It is the science of life‚ involving the study of all living things ranging from the atomic to ecosystem level. Far from being a science restricted to universities and laboratories‚ the principles and findings of biological sciences have uses in everyday life. Human Health · When people get sick‚ they visit the doctor‚ who is a practitioner of medicine‚ the branch of biology
Premium Biology Life Medicine
Paper 1 Chapter 1: Cell structure May/June 03 1 An actively growing cell is supplied with radioactive amino acids. Which cell component would first show an increase in radioactivity? A Golgi body B mitochondrion C nucleus D rough endoplasmic reticulum 2 Which pair of organelles has internal membranes? A chloroplasts and mitochondria B chloroplasts and nuclei C mitochondria and ribosomes D nuclei and ribosomes 3 Which combination is found in a prokaryotic cell? Endoplasmic reticulum DNA RNA Nucleus
Free Bacteria Cell DNA
Evolution of the bower In an attempt to entice and mate with females‚ male bowerbirds (Ptilonorhynchidae) have complex displays including dancing‚ vocal features‚ and courtship bowers. Bowers are areas that are cleared and decorated for mating purposes only. Depending on the species‚ the style of the bowers range from simple leaf arrangements to extravagant structures decorated with bright objects‚ and female viewpoints. There has been some scientific research to try and elucidate aspects of bower
Premium
mammal A warm-blooded animal with hair or fur; female mammals produce milk to feed their young. fish Vertebrates which live in water‚ usually have scales and breathe through gills. amphibian A vertebrate with moist skin and no scales that lives part of its life in water and part on land. bird Egg-laying vertebrates with feathers and forelimbs modified as wings. reptile A vertebrate that lays eggs and has lungs and scaly skin. invertebrate
Free Essay Writing Arthropod
Planning Introduction Stomata are pores on the bottom of leaves of vascular plants. The function of stomata is to allow gaseous exchange (transpiration) between the plant and the external environment (see diagrams below). This process is carried out by the plant‚ which controls the opening and closing of stomata via the guard cells. The more stomata a leaf contains the greater the rate of gas exchange and the less water it will be able to accumulate. Stomatal pores are formed between
Premium Photosynthesis Standard deviation Leaf
For generations‚ parents have pushed children to get good grades. Many of my classmates are given cash‚ iPods‚ and even cars as rewards for good grades. This obsession with grades comes from the belief that school success means more opportunities for higher paying jobs and a better life. Since grades are indicators of school success‚ good grades are seen as essential. But can grades in high school predict future success? While good grades may indicate the mastery of content‚ what they really demonstrate
Free Education Teacher High school
Genetic Traits Exercise: Introduction: The pioneer of modern day genetics was an Austrian Monk named Gregor Mendel‚ who established the basic laws of heredity from his studies with pea plants in the late 1800s. Mendel’s fundamental genetic principles may be applied to a variety of traits from many different organisms. Each genetic trait‚ such as flower color‚ is regulated by a pair of genes called alleles. These alleles are found at particular places on the chromosomes called loci. During meiosis
Premium Gene Allele Genetics
John Frelinger Dr. Travis Organic Evolution 30 April 2012 Evolution of the Immune System Animals are constantly bombarded by an immensely varied array of disease causing pathogens including bacteria‚ fungi‚ viruses and other parasites. The number of microbes living in the human body outnumber the actual human cells by a factor of 10‚ and for every single species of animal and plant on Earth‚ there are viruses that infect them. With the unrelenting threat of disease-causing pathogens all around
Premium Immune system
Biology Exam Review Unit One – Biochemistry What is an isotope? Isotope - An isotope is all atoms of the same element that have the same number of protons‚ but they may have different numbers of neutrons in the nucleus. - This means that all atoms with the same atomic number can have different atomic masses. - Because they have the same number of protons and electrons‚ they behave exactly the same in chemical reactions. Radioisotope - The nuclei of some isotopes of an element are unstable
Premium Atom Protein DNA
What Depositional Features are formed along the Swift River channel from Hope Road to Bloom Field Portland Jamaica? Name of Candidate: Raheem Boothe Candidate number: School: Centre number: Territory: Year of Examination: Table of Content Page Title Page # Analysis and Discussion Location of Study Area Map Of Jamaica Location of Study Area Map of
Premium Sediment Rock Sedimentary rock