* Charles Darwin Origin of species by natural selection Theory of natural selection 1. Over production More offspring are produced than can survive 2. Variation There are differences in the traits of these organisms 3. Competition 4. Best adapted survive select agent 5. Reproduce Pass on desirable traits to the next generation Organisms rarely have mutations that can allow the to better adapt to there envirironment. I. Evidence for evolution A. Fossils Remnants of organisms that
Premium Charles Darwin Evolution Natural selection
Cell wall is a fairly rigid‚ protective and supportive layer surrounding the cell external to plasma membrane of plants‚ bacteria‚ archaea‚ fungi and algae. It is absent in animals and most protists. It was first observed by Robert Hooke in 1665. It is not an entirely rigid structure as the cell wall expands due to the growth of the cell. It varies in thickness from o.1mm to I0mm.in most of the cells‚ cell wall is present from the very beginning to the last‚ but in slime molds (myxomycetes)
Premium Cell wall
1 Copyright © 2011 Pearson Education‚ Inc. Campbell’s Biology‚ 9e (Reece et al.) Chapter 32 An Overview of Animal Diversity About 40% of the questions in this chapter are either scenario questions or art questions‚ which typically involve higher-order thinking. Among these are two new sets of scenario questions‚ each devoted to a single-species animal phylum. The first pertains to the (possibly) basal animal known as Trichoplax‚ and the second to the bizarre phylum found only on lobster
Premium Developmental biology Animal
Biology: Unit 1: Diversity Of Life Fungi Fungi: are multi-cellular heterotrophs that use external digestion‚ and often grow out of sight‚ underground → fungi have nothing in common with plants other then the fact that they are stationary‚ and grow in the ground. They are not photosynthetic‚ and they do not produce their own food. Characteristics/ Cell Structure: * Mesh like bodies‚ composed of branching networks of filaments called mycelium * Mycelium: a branched mass of hyphae
Premium Plant
1) Why was the use of the telescope by Galileo‚ 400 years ago‚ such a significant event in the history of astronomy? (120 words‚ 2 marks) The introduction of Galileo’s refracting telescope was a significant event in history because of the conclusions Galileo proved using his instrument. He disproved the Roman Catholic Church’s belief that the Earth was at the centre of the universe‚ instead of the Sun. He observed the moon-like areas on Venus that could only be true if the Sun was at the centre
Premium Planet Jupiter Solar System
in order to identify characteristics associated with cell structure and movement of these one-celled organisms. We found that Protists exhibit certain characteristics that allow them to be categorized into different groups‚ mainly determined by their locomotion patterns. Despite differences in locomotion and the varying plant-like and animal-like organelles‚ all protists share key characteristics and functions that allow them to feed‚ grow‚ and reproduce--processes essential for survival and common
Premium Sugar Glucose
internal membranes and a cytoskeleton. The most characteristic membrane bound structure is the nucleus. This feature gives them their name‚ (also spelled "eucaryote‚") which comes from the Greek word referring to the nucleus. Animals‚ plants‚ fungi‚ and protists are eukaryotes. Microorganisms and all other living organisms are classified as prokaryotes or eukaryotes. Prokaryotes and eukaryotes are distinguished on the basis of their cellular characteristics. For example‚ prokaryotic cells lack a nucleus
Free Bacteria Cell DNA
Chapter 1: The Main Themes of Microbiology What is Microbiology? • micron = small and biologia = study of living things • Microbiology = study of small living things • How small is “small”? • What do we really mean by living? • Working definition: Study of entities too small to be seen with the unaided human eye. • (< 0.2 mm = 200 µm = 200‚000 nm) Types of Microbes Prokaryotes include Bacteria and Archaea Eukaryotes include Protista (Algae and Protozoa)‚ Fungi‚ and Animalia
Premium Microbiology Bacteria
Student’s Name Professor’s Name Course Date How past scientific discoveries have impacted our lives today Science has significantly impacted human life. With the beginning of the Industrial Revolution within the eighteenth century‚ the impact of Science on human life significantly changed (Shneiderman‚ 2007). On an expansive range‚ science profoundly affects the way we stay‚ generally through technologic discoveries‚ utilizing logical data for pragmatic purposes. For instance‚ the refrigerator
Premium Science Technology Scientific method
MT301 FOOD BIOCHEMISTRY END OF CHAPTER 1 & 2 TOPIC : ELABORATE ABOUT PLANT CELL AND ANIMAL CELL LECTURER : ENCIK AZHAR GROUP’S NAME : 2. Mohd Alimi 3. Suraya Hani 4. Norhaswana CONTENT INTRODUCTION 3 WHAT IS CELL? 4-5 HISTORY OF CELLS DISCOVERY 6 ANIMAL CELL
Free Cell