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
Density Lab January 24‚ 2014 Benjamin I. Purpose- The purpose of this lab is to identify the unknown substances by calculating the densities of the given substances then comparing those densities to the actual densities on the table given. II. Materials- Graduated cylinders Triple beam balance Unknown substances from bag given by teacher Table of known densities Calculator Water III. Procedure- The first thing one must do to identify which substance is which is to calculate the
Premium Volume Density Object
Protocol for Lab 5 – Aerobic Respiration Part 1 Isolation of Mitochondria from Cauliflower - Weigh 50g of rosettes cut from fresh cauliflower head. - Cut rosettes and place it on ice - Prepare juice extractor by placing ice and an empty 150 ml beaker into the right compartment. - Collect pulp from left compartment and record total volume of the extract. Approx. 20ml - Filter the pulp using six layered cheese cloth and collect it in a beaker sitting on ice. - Place two 50 ml test tubes
Premium Cellular respiration Adenosine triphosphate Citric acid cycle
Margaret E. Vorndam‚ M.S. Version 42-0038-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
Premium Buffer solution Cell wall PH
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
Water has many unique properties that make life possible on Earth. One property is cohesion. The cohesion property is properly defined as the binding of water molecules by hydrogen bonds. Water has this property as a result of the chemical bonding between water. Cohesion of the strong hydrogen bonds allows the water molecules to stick together‚ almost as a unit of one. A force exerted on one of the molecules will be exerted on all of the adjacent molecules as a result of cohesion. Cohesion‚ often
Premium Water Ionic bond Hydrogen
Heading: John Francis101 Honors Biology 5/14/15 Title: Classification of Species Purpose: The purpose of this lab is to understand the concept of taxonomic classification and to practice using dichotomous keys for classification. Procedure: To start the experiment with exercise 1‚ I gathered all of the needed supplies‚ both from around my house and from the lab paq CD. I then began exercise one by printing the images in Figure 5 from my labpaq. I then proceeded to cut out each shark. Next
Premium Bacteria Scientific method Chemistry
28/09/12 Grace Masters Woodlice Behavior Experiment Aim: To investigate the effect of light intensity on the behavior of woodlice (Porcellio scaber) in regards to their change in speed. Variables: Variable How can it be controlled? (IV) - Light intensity - The light intensity will be controlled by the knob on the lamp throughout the experiment. In addition‚ the light intensity will be controlled by closing the windows and doors in the classroom as well as turning
Premium Porcellio scaber Light Woodlouse
AP Biology Concept Checks Gina Andraos Concept Checks 1.1 1. For each biological level in Figure 1.3‚ write a sentence that includes the next “lower” level. Example: “A community consists of populations of the carious species inhabiting a specific area. ❖ The biosphere consists of all the environments that take place on Earth‚ including most regions of land‚ most bodies of water‚ as well as the ecosystems that combined to help make up the biosphere. ❖ An ecosystem consists of
Premium Life Ecology Ecosystem
Emission Spectroscopy Lab Introduction: According to the Bohr atomic model‚ electrons orbit the nucleus in fixed paths with specific energies. Each path is therefore often referred to as an “energy level”. Electrons possessing the lowest energy are found in the levels closest to the nucleus. Electrons of higher energy are located in progressively more distant energy levels. If an electron absorbs sufficient energy to bridge the “gap” between energy levels‚ the electron may jump to a higher
Premium Photon Electromagnetic radiation Quantum mechanics